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R44 ILLUSTRATED PARTS CATALOG

Robinson R44 Cadet · Parts Catalog

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Overview

The document is an Illustrated Parts Catalog for the Robinson R44 series, including the R44 Cadet. It provides detailed information on parts, assemblies, and installation procedures relevant to the R44 helicopters. This catalog is essential for maintenance personnel and operators who need to identify and order parts for repairs and servicing. It includes part numbers, descriptions, quantities, and installation notes to assist in the proper assembly and maintenance of the aircraft.

  • The catalog is specifically for the Robinson R44 series, including the R44 Cadet.
  • It includes detailed part numbers and descriptions for various components.
  • Installation procedures are provided for headliner, hydraulics, landing gear, and pop-out floats.
  • Maintenance personnel should verify part numbers against the latest revision log online.
  • Contact information for customer support and parts ordering is included.

Document

Source

Originally published by robinsonstrapistorprod.blob.core.windows.net. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.

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Document details

Type
Parts Catalog
Year
2025
Pages
86
File size
5.2 MB
Publisher
robinsonstrapistorprod.blob.core.windows.net
How rare is it?
5Robinson R44 Cadet registered worldwide · 0 active

Common. Rarer than 10% of the aircraft models we track.

Documentation completeness
5/7

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In this document

Introduction

This section outlines the purpose of the Illustrated Parts Catalog, which is to provide comprehensive information on parts and assemblies for the Robinson R44 series helicopters. It emphasizes the importance of using current data and provides contact information for customer support.

Headliner and Insulation Installation

This section details the parts and installation procedures for the headliner and insulation in the R44 series. It includes part numbers for insulation and trim components, specifying quantities and installation notes for various configurations, including air-conditioned and non-air-conditioned ships.

Hydraulics

This section covers the hydraulic system components, including installation instructions for forward and aft servos, hydraulic reservoirs, and associated hoses. It provides part numbers and quantities needed for each installation, ensuring proper hydraulic function.

Landing Gear Installation

This section describes the installation of landing gear components, including strut assemblies and fairings. It includes part numbers and quantities, along with references to figures that illustrate the installation process.

Pop-Out Floats Installation

This section provides details on the installation of pop-out floats, including the necessary components and their part numbers. It includes installation notes and references to figures for clarity.

Safety notes

  • Ensure to use the correct part numbers when ordering to avoid installation errors.
  • Refer to the latest revision log for current data before proceeding with maintenance.

Full document text

Production Certificate Number 424WE Type Certificate Number H11NM OFFICE HOURS Monday through Friday, 7:30 a.m. to 4:30 p.m., Pacific Time. Lunch hour is 11:30 a.m. to 12:30 p.m. HOLIDAYS Please visit https://robinsonheli.com for a list of holidays and company shutdowns. CUSTOMER SUPPORT AND SPARES ORDERS Please visit https://robinsonheli.com for Customer Support contact information. Procure parts from any R44 Dealer or Service Center, or order directly from RHC Customer Service via email, fax, or phone. PUBLICATIONS Viewing RHC Maintenance Manuals (MMs) and Illustrated Parts Catalogs (IPCs) online at https://robinsonheli.com is recommended to ensure use of current data. Viewing MMs and IPCs offline via paper or digital download requires verification that the data is current. Refer to the online MM or IPC Revision Log for the list of current pages. Robinson Helicopter Company 2901 Airport Drive Torrance, California 90505-6115 United States of America Phone: (310) 539-0508 Fax: (310) 539-5198 Web: https://robinsonheli.com FEB 2025 Introduction Page i ROBINSON HELICOPTER COMPANY R44 ILLUSTRATED PARTS CATALOG RTR 460 VOLUME II SUBSCRIPTION ORDER AND RENEWAL FORMS Subscription order and renewal forms are located at https://robinsonheli.com. WARRANTY INFORMATION Helicopter and parts warranty information is located at https://robinsonheli.com. Page ii Introduction FEB 2025 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES HEADLINER AND INSULATION INSTALLATION 25-33-1 C003-21* Insulation** (forward, RH; for ships with hand-holds) . . . . . . X 1 2 C003-19* Insulation** (aft, RH; for ships with hand-holds) . . . . . . . . . . X 1 3 C003-18* Insulation** (aft cabin; for air conditioned ships) . . . . . . . . . . X 1 4 C212-1 Trim (hand-hold; forward, LH and RH) . . . . . . . . . . . . . . . . . . X 2 5 C003-22* Insulation** (forward, LH; for ships with hand-holds) . . . . . . X 1 6 C212-2 Trim (hand-hold; aft, LH and RH) . . . . . . . . . . . . . . . . . . . . . . X 2 7 C003-20* Insulation** (aft, LH; for ships with hand-holds) . . . . . . . . . . X 1 8 C003-2* Insulation** (aft cabin; for non-air conditioned ships) . . . . . . X 1 9 C212-3 Patch** (installed behind items 4 and 6; [4] R44 and R44 II, [2] R44 Cadet) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R 10 C003-14 Insulation** . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 11 C003-13 Insulation** . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 12 C003-12 Insulation** . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 13 C003-15 Insulation** . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 14 C003-16 Insulation** . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 15 C003-17 Insulation** . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 16 B270-8QT Adhesive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R 17 F470-4 Liner (aft, RH baggage compartment; replaces C003-7 insulation) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 18 F470-3 Liner (aft, LH baggage compartment; replaces C003-7 insulation) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 19 F470-2 Liner (forward, RH baggage compartment; replaces C003-8 insulation) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 20 F470-1 Liner (forward, LH baggage compartment; replaces C003-8 insulation) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 21 C003-5* Insulation** (forward, RH; for ships without hand-holds) . . . . X 1 22 C003-3* Insulation** (aft, RH; for ships without hand-holds) . . . . . . . X 1 23 C003-6* Insulation** (forward, LH; for ships without hand-holds) . . . . X 1 24 C003-4* Insulation** (aft, LH; for ships without hand-holds) . . . . . . . . X 1 25 D598-4* Insulation** (aft cabin; for ENG/Police air conditioned ships) X 1 26 D598-2* Insulation** (aft cabin; for ENG/Police non-air conditioned ships) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 27 C003-25* Insulation** (aft cabin; for Cadet air conditioned ships) . . . . . . . X 1 28 C003-24* Insulation** (aft cabin; for Cadet non-air conditioned ships) . . . X 1 29 D670-6 Trim (replaces C474-3 trim) . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 30 MS20426AD3 Rivet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 NOTES * Refer to chart at the end of parts list when ordering. Include code after dash no., for example, C003-21 in tan, order “C003-21TN”. ** Install using item 16. Continues FEB 2025 Chapter 25 Furnishings Page 25.33 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES FIGURE QTY AND PART NUMBER DESCRIPTION PARTS PER INDEX AVAIL NUMBER ASSY HEADLINER AND INSULATION INSTALLATION (Cont’d) 25-33-31 MS21069L08K Nutplate (two places, LH and RH) . . . . . . . . . . . . . . . . . . . . . . . . X 2 32 MS27039C0806 Screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 6 33 C465-1 Panel (Ref, LH; see Figure 25-1) 34 C015 Cabin Assembly (Ref) 35 C003-8 Insulation (earlier R44s; forward baggage compartment) . . . . O 2 36 C003-7 Insulation (earlier R44s; aft baggage compartment) . . . . . . . . O 2 NOTES Code Definition GR Gray TN Tan Page 25.34 Chapter 25 Furnishings FEB 2025 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES FIGURE QTY AND PART NUMBER DESCRIPTION PARTS PER INDEX AVAIL NUMBER ASSY I I I CHAPTER 29 HYDRAULICS Figure Title Page

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29-1 Forward Servo Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29.0 29-3 Aft Servo Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29.2 29-7 Hydraulic Reservoir Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29.6 29-11 Hydraulic Reservoir Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29.10 29-15 Forward Servo Hoses Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29.14 29-17 Hydraulic Pump Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29.16 FEB 2025 Chapter 29 Hydraulics Page 29.i ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES Page 29.0 FIGURE 29-1 FORWARD SERVOS INSTALLATION FEB 2025 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES 2a ~fi- 21 / /> 26 - <' 25 11 /,,.__________ r--- ', / < -✓- Ear lier R44s 5 15 FORWARD SERVOS INSTALLATION 29-1-1 D200-1 Clevis (install using item 20) . . . . . . . . . . . . . . . . . . . . . . . . . X 2 2 B330-19 Palnut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 3 AN316-6R Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 4 D200-3 Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 5 D200-2 Scissor (overlap direction not critical) . . . . . . . . . . . . . . . . . . . X 2 6 MS27039C0806 Screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 7 NAS1149FN832P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 8 D210-08 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 9 B330-6 Palnut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 10 NAS6604-2 Bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 11 NAS1149F0432P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 12 12 D210-4 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 13 NAS6604H16 Bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 14 MS21087-4 Nutplate (install using MS20426AD3 rivet [8]) . . . . . . . . . . . . X 4 15 D212-1 Servo Assembly (includes items 17 and 18) . . . . . . . . . . . . . . X 2 D212-1R D212-1 Servo Assembly (Overhaul exchange; requires core deposit. Includes items 17 and 18.) . . . . . . . . . . . . . . . . . . . . X 2 16 D201-6 Support (Incl item 14) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 17 B330-16 Palnut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 18 AN316-5R Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 19 C121-28 Push-Pull Tube (Ref, see Figure 67-27) C121-24 Push-Pull Tube (Ref, see Figure 67-31) 20 B270-21 Protectant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R 21 G801-3 Pad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 22 D525-2 Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O 2 23 MS20995C32 0.032 in. dia. Safety Wire . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R 24 D201-5 Support (superseded by item 16) . . . . . . . . . . . . . . . . . . . . . . . . . O 1 25 NAS6604-16 Bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 26 NAS1149F0432P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 27 D210-4 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 28 B330-13 Palnut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 NOTES FEB 2025 Chapter 29 Hydraulics Page 29.1 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES FIGURE QTY AND PART NUMBER DESCRIPTION PARTS PER INDEX AVAIL NUMBER ASSY Page 29.2 FIGURE 29-3 AFT SERVO INSTALLATION FEB 2025 ROBINSON ILLUSTRATED PARTS CATALOG 1,51--.........i~ I ~ i~\ 2 3~ 4~ ~-I- I :1 R44 SERIES 50 AFT SERVO INSTALLATION 29-3-1 D200-1 Clevis (install using item 54) . . . . . . . . . . . . . . . . . . . . . . . . . X 1 2 B330-19 Palnut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 3 AN316-6R Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 4 D200-3 Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 5 NAS6604-24 Bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 6 NAS1149F0432P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 3 7 C130-15 Spacer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 8 D203-1 Support – LH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 9 D212-1 Servo Assembly (includes item 24[1] and item 25 [1]) . . . . . . X 1 D212-1R D212-1 Servo Assembly (Overhaul exchange; requires core deposit. Includes items 24 [1] and 25[1].) . . . . . . . . . . . . . . . X 1 10 C130-14 Spacer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 11 NAS1149F0463P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 3 12 D210-4 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 3 13 B330-13 Palnut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 3 14 NAS6604-25 Bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 15 D202-4 Bracket Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 16 MS27039C0807 Screw (or MS27039C0808) . . . . . . . . . . . . . . . . . . . . . . . . . X 8 17 C347-6 Panel (Ref, see Figure 53-15) 18 MS27039C0807 Screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 19 C706-1 Tailcone Fairing (Ref, see Figure 53-13) 20 C028-1 Main Fuel Tank (Ref, see Figure 28-1) 21 NAS1097AD3 Rivet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 22 D202-1 Channel (see also Figure 53-15) . . . . . . . . . . . . . . . . . . . . . . . X 1 23 D202-3 Shim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R 24 B330-16 Palnut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 25 AN316-5R Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 26 C343-8 Tube (Ref, see Figure 67-53) 27 D204-8 Support – RH (Supersedes D204-1 support.) . . . . . . . . . . . . . X 1 D204-1 Support – RH (Not for use with R44 II.) . . . . . . . . . . . . . . . . . O 1 28 NAS1149F0532P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 29 A101-4 Rod End (Ref) NOTES Continues FEB 2025 Chapter 29 Hydraulics Page 29.3 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES FIGURE QTY AND PART NUMBER DESCRIPTION PARTS PER INDEX AVAIL NUMBER ASSY AFT SERVO INSTALLATION (Cont’d) 29-3-30 NAS1149FN832P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 31 MS21042L08 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 32 D208-1 Weldment (Ref, see Figure 67-53) 33 D205-16 Hose (90° elbow at reservoir end) . . . . . . . . . . . . . . . . . . . . . X 1 D205-6* Hose (straight both ends) . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 34 D205-7 Hose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 35 AN804D4 Tee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 36 D452-4 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 37 D454-4 Retainer (reusable, supersedes MS28773-04) . . . . . . . . . . . . X 1 38 MS28778-4 Packing (o-ring) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 39 D205-12 Hose (90° elbow at reservoir end) . . . . . . . . . . . . . . . . . . . . . X 1 D205-2* Hose (straight both ends) . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 40 D205-3 Hose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 41 AN804D3 Tee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 42 D452-3 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 43 D454-3 Retainer (reusable, supersedes MS28773-03) . . . . . . . . . . . . X 1 44 MS28775-011 Packing (O-ring) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 45 B330-21 Palnut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 46 B330-19 Palnut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 47 D173-1 Rod End (Ref) 48 C339-10 Jackshaft Weldment (Ref, see Figure 67-53) 49 G801-3 Pad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 50 D525-2 Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O 1 51 B270-21 Protectant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R Page 29.4 Chapter 29 Hydraulics FEB 2025 NOTES * Installed on earlier R44s. See also Figure 29-7. ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES FIGURE QTY AND PART NUMBER DESCRIPTION PARTS PER INDEX AVAIL NUMBER ASSY HYDRAULIC RESERVOIR INSTALLATION* (Cont’d) 29-11-52 B330-25 Palnut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 53 B330-19 Palnut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 54 B330-21 Palnut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 55 AN6235-1A Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 56 MS28778-14 Packing (o-ring) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 57 D516-1 Cap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 58 MS20995C20 0.020 in. dia. Safety Wire . . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R 59 MS20995C32 0.032 in. dia. Safety Wire . . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R 60 D507-1 Solenoid Assembly (14-volt ships) . . . . . . . . . . . . . . . . . . . . . . X 1 D507-2 Solenoid Assembly (28-volt ships) . . . . . . . . . . . . . . . . . . . . . . X 1 61 A215-907 Packing (o-ring) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 NOTES * Ship S/N 1000 and prior. FEB 2025 Chapter 29 Hydraulics Page 29.13 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES FIGURE QTY AND PART NUMBER DESCRIPTION PARTS PER INDEX AVAIL NUMBER ASSY Page 29.14 FIGURE 29-15 FORWARD SERVO HOSES INSTALLATION FEB 2025 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES 1 2 1---..... LANDING GEAR LUG – EXTENSION INSTALLATION 32-11B-1 C239-12 Strut Assembly – Aft (standard gear; Ref, see Figure 32-1) C239-16 Strut Assembly – Aft (Extended gear. Ref, not shown; see Figure 32-1.) 2 D040-1 Cowling Assembly – Aft (Ref, see Figure 53-5) 3 D210-3 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 4 NAS620-10L Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 5 F411-10 Extension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 6 NAS1351-3-10P Screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 7 C082 Fairing Assembly – Aft (RH, Ref; see Figure 32-9) 8 — Tow Cart* (Ref) NOTES * Refer to MT950 Ground Handling Cart Operating Instructions, Maintenance Manual, and Illustrated Parts Catalog online at https://robinsonheli.com. FEB 2025 Chapter 32 Landing Gear Page 32.11B ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES FIGURE QTY AND PART NUMBER DESCRIPTION PARTS PER INDEX AVAIL NUMBER ASSY Page 32.12 FIGURE 32-13 POP-OUT FLOATS – CYLINDER ASSEMBLY INSTALLATION FEB 2025 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES / '> 17 'I:,.~~ ' '.... ~~ I l\ I • 1 \ \ \ \ \ ' ' ' ' ' ' ' ' 23 / ] ~ 2 25 \ "-s 24 FORWARD When upgrading early-revision cylinders (marked DOT-E 10915-4500) to later revision (marked DOT-E 10915-4945), replace D669-5 Rev "A" ...___ straps with D669-5 Rev "B" (or subsequent) straps . To replace strap, ._____ drill out four existing attaching rivets and install new strap with four NAS1919804S02 (or NAS93018-4-02) rivets in original rivet holes . POP-OUT FLOATS – CYLINDER ASSEMBLY INSTALLATION 32-13-1 MS27039C0806 Screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 2 D669-3 Strap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 3 MS21042L08 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 4 NAS1149FN816P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 5 MS35489-6 Grommet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 6 D676-1 Cable (Ref, see Figure 32-17) 7 MS27039C1-12 Screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 8 D761-2 Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 9 MS27039C0805 Screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 10 MT545-1 Pin Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 11 MS21042L3 Nut (for earlier R44s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 12 NAS1149F0332P Washer ([4] required on earlier R44s when item 11 is installed) . . X 2 13 D761-1 Support Assembly (revision “C” and higher) . . . . . . . . . . . . . . . X 1 14 C130-26 Spacer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 15 AN735-3 Clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 16 MS3367-4-9 Ty-Rap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 17 D669-5 Strap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 18 D679-3* Cylinder Assembly (filled) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 D679-3R* D679-3 Cylinder Assembly (filled; overhaul exchange) . . . . . . . X 1 D679-4* Cylinder Assembly (empty) . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 D679-4R* D679-4 Cylinder Assembly (empty; overhaul exchange) . . . . . . X 1 19 D669-1 Cradle Assembly (Incl item 20) . . . . . . . . . . . . . . . . . . . . . . . . X 1 20 A226-11 Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R 21 D674-1 Hose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 22 D682-6 Decal (cylinder pressure limits) . . . . . . . . . . . . . . . . . . . . . . . . . X 1 23 D669-4 Brace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 24 A701-5 Tape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R 25 MS20470AD3 Rivet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 8 26 MS20470AD4 Rivet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 6 * * * 27 MT546-2** Adapter Assembly – Filler (includes MS28778-2 packing) . . . . X 1 28 MS28778-2** Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 29 KI-151** Pop-Out Float Cylinder Bleed-Off Kit . . . . . . . . . . . . . . . . . . . . . X 1 30 KI-175 Cylinder Replacement Installation Kit (Incl items 1, 3, 4, 7 thru 9, and 12 thru 16; not shown) . . . . . . . . . . . . . . . . . . . . . . . . . X 1 NOTES * When replacing D679-1 Cylinder Assembly, also order KI-175 installation kit. ** Not shown; see Figure 99-13. FEB 2025 Chapter 32 Landing Gear Page 32.13 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES FIGURE QTY AND PART NUMBER DESCRIPTION PARTS PER INDEX AVAIL NUMBER ASSY Page 32.14 FIGURE 32-15 POP-OUT FLOATS – CYLINDER ASSEMBLY INSTALLATION FEB 2025 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES 1------ ., I .'II •• ,,,)- ~ // '----... ~--~ ,,,) " / When upgrading early-revision cylinders (marked DOT-E 1091 5-4500) to later revision (marked DOT-E 10915-4945), replace D669 -5 Rev "A" ~- straps with D669 -5 Rev "B" (or subsequent) straps . To replace strap, .______ drill out four existing attaching rivets and install new strap with four NAS 1 919B04S02 (or NAS9301 B-4-02) rivets in original rivet holes. POP-OUT FLOATS – TUBE ASSEMBLY COMPONENTS* 32-25-1 C950-2 Float Tube Assembly – RH (Incl items 2, 3, 5, 13, 15, and 16) . . O 1 C950-1 Float Tube Assembly – LH (Incl items 2, 3, 5, 13, 15, and 16; not shown) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O 1 2 20525** Inlet Check Valve (Ref) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O 1 3 20325** Inlet Check Valve (Ref) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O 1 4 AN824-8D Tee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 5 20246** Inlet Check Valve (Ref) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O 3 6 D674-7 Hose Assembly – LH and RH (Incl item 11) . . . . . . . . . . . . . . . . X 1 7 D674-6 Hose Assembly – LH and RH (Incl item 12) . . . . . . . . . . . . . . . . X 2 8 D674-5 Hose Assembly – LH and RH (Incl item 12) . . . . . . . . . . . . . . . . X 2 9 D674-4 Hose Assembly – LH and RH (Incl item 12) . . . . . . . . . . . . . . . . X 2 10 D674-3 Hose Assembly – LH and RH (Incl item 12) . . . . . . . . . . . . . . . . X 2 11 B158-12 Heat Shrink (black, 0.75 in. dia.) . . . . . . . . . . . . . . . . . . . . . . . X A/R 12 B158-16 Heat Shrink (black, 1.00 in. dia.) . . . . . . . . . . . . . . . . . . . . . . . X A/R 13 AN929-8 Cap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 14 B-51025** Wrench . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O 1 15 B-51209** Valve – Top-Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O 5 16 B-51019-4** Valve – Pressure Relief . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O 5 17 KI-83-4 Pop-Out Float Repair Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 NOTES * Five-chamber floats. ** Apical Industries, Inc. part no. FEB 2025 Chapter 32 Landing Gear Page 32.25 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES FIGURE QTY AND PART NUMBER DESCRIPTION PARTS PER INDEX AVAIL NUMBER ASSY Page 32.26 FIGURE 32-27 POP-OUT FLOATS – HOSES INSTALLATION FEB 2025 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES NOTES * C014-28 landing gear shown. C014-17 landing gear hose installation is identical. POP-OUT FLOATS – HOSES INSTALLATION* 32-27-1 MS27039C1-12 Screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 2 C130-26 Spacer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 3 MS21919WDG10 Clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 4 D674-2 Hose Assembly (Incl item 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 5 B158-16 Heat Shrink (black, 1.00 in. dia.) . . . . . . . . . . . . . . . . . . . . . . . X A/R 6 NAS1149F0332P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 7 MS21042L3 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 8 AN834-8D Tee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 9 D674-1 Hose (from cylinder assembly; see also Figure 32-13) . . . . . . . . X 1 10 AN924-8D Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 11 NAS1149F1290P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 12 MS21266-1N Grommet (install using item 20) . . . . . . . . . . . . . . . . . . . . . . . . X A/R 13 MS35489-20 Grommet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 14 MS3367-5-9 Ty-Rap (or MS3367-7-9; used as a spacer at this location, LH and RH) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 15 MS3367-7-9 Ty-Rap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R 16 C082-53 Fairing Assembly (Ref, forward LH; see Figure 32-9) 17 D674-6 Line Assembly (see also Figure 32-23) . . . . . . . . . . . . . . . . . . . X 1 18 C014-25 Skid Tube Assembly – (LH, Ref) 19 AN824-8D Tee (LH and RH) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 20 B270-8qt Adhesive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R 21 MS20470AD3 Rivet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 9 22 NAS1919B04S01 Rivet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 8 23 D673-1 Doubler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 24 D673-4 Doubler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 25 D673-2 Doubler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 FEB 2025 Chapter 32 Landing Gear Page 32.27 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES FIGURE QTY AND PART NUMBER DESCRIPTION PARTS PER INDEX AVAIL NUMBER ASSY Page 32.28 FIGURE 32-29 FIXED FLOATS – TUBE ASSEMBLIES INSTALLATION FEB 2025 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES f,:) e c, 26 4'" \ / r--23 F004-2 EMPENNAGE ASSEMBLY 53-37-1 F004-2* Empennage Assembly (Incl items 2 thru 5, 12 thru 15, 41 thru 43, and 45) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 2 C042-1 Stabilizer – Upper Vertical (does not include items 12, 13, and 15) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 3 C130-9 Spacer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 8 4 NAS6604-6 Bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 8 5 F044-1* Mount Assembly – Vertical Stabilizers (Incl items 17, 19, 33, 60, and 61) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 8 NAS6606-47 Bolt (or NAS6606-48) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 7 NAS1149F0632P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 8 C023-1, -4, -14, & -15 Tailcone Assembly (Ref, see Figure 53-25) 9 NAS1149F0663P Washer (Under nut, as required to meet torque requirements per R44 MM § 23-30.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R 10 D210-6 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 11 B330-19 Palnut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 12 A130-14 Spacer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 13 MS20470AD4 Rivet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 14 MS35206-228 Screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 15 C554-2 Clip – Upper (Vertical Stabilizer) . . . . . . . . . . . . . . . . . . . . . . X 1 16 MS35489-4 Grommet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 17 C529-1 Mount Assembly – Tail Light . . . . . . . . . . . . . . . . . . . . . . . . . X 1 18 01-0771554-01** Light Assembly – Tail Light (Ref, see Figure 33-7) 19 MS20470AD3 Rivet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 20 MS21042L08 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 21 NAS1149FN816P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 22 B161-2 Spirap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R 23 MS3367-5-0 Ty-Rap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R 24 MS21919WDG3 Clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 25 MS27039C0806 Screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 26 B263-11 Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 B263-2 Socket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 27 B263-10 Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 B263-1 Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 28 B263-13 Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 B263-2 Socket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 FEB 2025 Chapter 53 Fuselage Page 53.37 NOTES * May only be installed if F955-1 or -6 bracket is installed on tailcone, see Figure 53-25. ** Whelen part number. Continues ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES FIGURE QTY AND PART NUMBER DESCRIPTION PARTS PER INDEX AVAIL NUMBER ASSY F004-2 EMPENNAGE ASSEMBLY (Cont’d) 53-37-29 B263-12 Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 B263-1 Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 30 B260-3 Terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 31 MS21919WDG2 Clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 32 90295A075 Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 33 D049-8 Wire Harness Assembly – Tail Light (includes items 16, 22, 27, 28 [1], 30, 32, and wires; assembled) . . . . . . . . . . . . . . . X 1 34 C148 Bulkhead Assembly (Ref) 35 D082-1 Tube Assembly – Tail Rotor Guard Mount (lightly coat mating surface to item 48 with wet primer) . . . . . . . . . . . . . . 36 MS27039C1-07 Screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 37 D081-1 Spacer (lightly coat mating surface to item 35 with wet primer prior to installation) . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 38 NAS1149F0332P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 39 D210-3 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 40 NAS6603-16 Bolt (install using wet primer on shank ) . . . . . . . . . . . . . . . . . X 2 41 C554-1 Clip – Lower (Vertical Stabilizer) . . . . . . . . . . . . . . . . . . . . . . X 1 42 NAS1149FN616P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 43 MS21042L06 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 44 C654-2 Decal – "DANGER" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 45 C043-1 Stabilizer – Lower Vertical (includes items 58 and 59; does not include items 13, 41, 44, and 57) . . . . . . . . . . . . . . . . . . X 1 46 NAS1149F0432P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 47 D210-4 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 48 D079-1 Tail Rotor Guard Assembly (Includes item 54; does not include items 35 and 37. Lightly coat inside top of guard with wet primer prior to installing item 35. Seal around seam with primer after installation.) . . . . . . . . . . . . . . . . . . . . X 1 49 D081-4 Block Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 50 NAS1351-4-51P Screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 51 NAS1352-3-14P Screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 52 D081-2 Block – Cap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 53 NAS1351-4-36P Screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 54 C654-18 Decal – "NO HAND HOLD" . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 55 C470-3 Spacer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 56 C470-3 Spacer (Ref; revision I and prior no longer available) 57 C470-1 Tail Skid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 Page 53.38 Chapter 53 Fuselage FEB 2025 NOTES Continues ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES FIGURE QTY AND PART NUMBER DESCRIPTION PARTS PER INDEX AVAIL NUMBER ASSY C004-2 EMPENNAGE ASSEMBLY 53-41-1 C004-2* Empennage Assembly (Includes items 2 thru 5, 14 thru 17, 23, 42 thru 44, and 47, does not include item 45. Also order item 64 as required.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 2 C042-1 Stabilizer – Upper Vertical (does not include items 14, 15, and 17) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 3 C130-9 Spacer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 8 4 NAS6604-6 Bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 8 5 C044-1* Stabilizer – Horizontal (Incl items 6, 7, 18, 20 thru 23, and 35) X 1 6 MS20470AD3 Rivet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 10 7 D292-2 Rib (inboard; seal around joint using item 23) . . . . . . . . . . . . . X 1 8 NAS6606-47 Bolt (or NAS6606-48) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 9 NAS1149F0632P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 10 C023 Tailcone Assembly (Ref) 11 NAS1149F0663P Washer (Under nut, as required to meet torque requirements per R44 MM § 23-30.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R 12 D210-6 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 13 B330-19 Palnut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 14 A130-14 Spacer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 15 MS20470AD4 Rivet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 16 MS35206-228 Screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 17 C554-2 Clip – Upper Vertical Stabilizer . . . . . . . . . . . . . . . . . . . . . . . . . X 1 18 C529-1 Mount Assembly – Tail Light . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 19 01-0771554-01** Light Assembly – Tail Light (Ref, see Figure 33-7) 20 NAS9301B-4-02 Rivet (or NAS1919B04S02) . . . . . . . . . . . . . . . . . . . . . . . . . . . X 3 21 NAS9301B-4-01 Rivet (or NAS1919B04S01) . . . . . . . . . . . . . . . . . . . . . . . . . . . X 14 22 D292-3 Rib (outboard; seal around joint using item 23) . . . . . . . . . . . . X 1 23 B270-1 Sealant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 24 MS21042L08 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 25 NAS1149FN816P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 26 MS3367-5-9 Ty-Rap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 27 B161-2 Spirap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R 28 MS21919WDG3 Clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 29 MS27039C0806 Screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 30 B264-11 Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 B264-2 Socket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 NOTES * May not be installed if F955-1 or -6 bracket is installed on tailcone, see Figure 53-25. ** Whelen part number. Continues FEB 2025 Chapter 53 Fuselage Page 53.41 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES FIGURE QTY AND PART NUMBER DESCRIPTION PARTS PER INDEX AVAIL NUMBER ASSY C004-2 EMPENNAGE ASSEMBLY (Cont’d) 53-41-31 B264-10 Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 B264-1 Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 32 MS21919WDG2 Clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 33 B260-3 Terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 34 MS35489-4 Grommet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 35 D049-3 Wire Harness Assembly – Tail Light (Includes items 27, 30, 34, B264-1 pin, [2] B264-2 sockets, B264-13 housing, 90295A075 plastic washer, and wires; assembled. Replaced by D049-8, see Figure 53-37.) . . . . . . . . . . . . . . . . . . . . . . . X 1 36 MS27039C1-07 Screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 37 D082-1 Tube Assembly – Tail Rotor Guard Mount (lightly coat mating surface to item 46 with wet primer) . . . . . . . . . . . . . . X 1 38 D081-1 Spacer (lightly coat with wet primer prior to installation) . . . . X 2 39 NAS1149F0332P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 40 NAS6603-16 Bolt (install using wet primer) . . . . . . . . . . . . . . . . . . . . . . . . . X 2 41 D210-3 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 42 C554-1 Clip – Lower Vertical Stabilizer . . . . . . . . . . . . . . . . . . . . . . . . . X 1 43 NAS1149FN616P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 44 MS21042L06 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 45 C654-2 Decal – “Danger” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 46 D079-1 Tail Rotor Guard (Includes item 55. Lightly coat inside top of guard with primer before installing item 37. Seal around seam with primer after installation.) . . . . . . . . . . . . . . . . . . . . X 1 47 C043-1 Stabilizer – Lower Vertical (includes items 23, 62, and 63; does not include items 42, 45, and 58) . . . . . . . . . . . . . . . . . X 1 48 NAS1149F0432P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 49 D210-4 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 50 D081-4 Block Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 51 NAS1351-4-51P Screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 52 NAS1352-3-14P Screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 53 D081-2 Block – Cap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 54 NAS1351-4-36P Screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 55 C654-18 Decal – “No Hand Hold” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 56 C470-3 Spacer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 57 C470-3 Spacer (Ref, revision I and prior no longer available) 58 C470-1 Tail Skid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 59 D097-11* Stabilizer – Horizontal (Incl items 5 and 60) . . . . . . . . . . . . . . . X 1 Page 53.42 Chapter 53 Fuselage FEB 2025 NOTES * ENG ships only. Continues ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES FIGURE QTY AND PART NUMBER DESCRIPTION PARTS PER INDEX AVAIL NUMBER ASSY MAIN ROTOR GEARBOX AND MAST ASSEMBLY 63-1-1 C006-7* Main Rotor Gearbox and Mast Assembly (Includes items 3 thru 11, 13 thru 59, 65, 66, 73, 76, 77, 79, and 83 thru 87; also items 8, and 12 thru 14 from Figure 29-17. Includes rotor brake, yoke, slider tube, and hydraulic pump.) . . . . . . . . . . . . . X 1 C006-8* Main Rotor Gearbox and Mast Assembly (Includes items 3, 7 thru 9, 11, 13 thru 38, 65, 66, 73, 76, 77, 79, 83, and 87; also items 8, and 12 thru 15 from Figure 29-17. Does not include rotor brake, yoke, slider tube, or hydraulic pump.) . . . . . . . . X 1 C006-8R* C006-8 Main Rotor Gearbox and Mast Assembly (overhaul exchange) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 C006-6* Main Rotor Gearbox and Mast Assembly (Ship S/N 10001 thru 13838, and ship S/N 0001 thru 2408 with R8206 Upgrade Kit. Includes items 3, 7 thru 9, 11 thru 17, 19 thru 38, 65, 66, 73, 74, 76, 77, 79, 83, and 87; also items 8, and 12 thru 15 from Figure 29-19. Does not include rotor brake, yoke, slider tube, or hydraulic pump.) . . . . . . . . . . . . . . . . . . . . . . O 1 C006-1 or -3 Main Rotor Gearbox and Mast Assembly (Ref, no longer available. Superseded by C006-6 assembly.) R8206 C283-3 Mast Tube Upgrade Kit (For ship S/N 0001 thru 9999 with C283-1 Mast Assembly originally installed.) . . . . . . . . . . . X 1 2 C284-1 Tube Assembly – Swashplate (for use with earlier main rotor gearboxes) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 C284-2 Tube Assembly – Swashplate (May only be installed if mast assembly is equippped with C280-2 sleeve [identified by 0.5-inch wide notch at forward side atop mast assembly].) . . X 1 3 C251-2 Shaft – Main Rotor Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O 1 C251-1 Shaft – Main Rotor Drive (Ref, not shown. Superseded by C251-2.) 4 NAS6603-24 Bolt ([6] required with item 80) . . . . . . . . . . . . . . . . . . . . . . . . . X 4 5 NAS1149F0332P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 14 6 D210-3 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 6 7 F283-3 Mast Assembly (Incl item 83) . . . . . . . . . . . . . . . . . . . . . . . . . . O 1 8 B563-2 Sight Gage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 9 A215-020 O-Ring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 10 NAS6603-40 Bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 11 NAS1149F0432P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 12 12 MS20995C32 0.032 in. dia. Safety Wire . . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R 13 C257-2 Cover (non-hydraulic ship, or when item 85 is removed) . . . . . . X 1 14 A215-222 O-Ring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 15 F110-4 Telatemp (temperature recorder, 220°–270°F) . . . . . . . . . . . . X 2 NOTES * See Figure 99-15 for shipping crate. Continues FEB 2025 Chapter 63 Main Rotor Drive System Page 63.1 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES FIGURE QTY AND PART NUMBER DESCRIPTION PARTS PER INDEX AVAIL NUMBER ASSY NOTES * Requires MT054-1 tool to drain gearbox. Continues MAIN ROTOR GEARBOX AND MAST ASSEMBLY (Cont’d) 63-1-16 D210-4 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 16 17 A141-11 Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 16 18 B049-3 Harness Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 19 C049-2 Harness Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 20 C264-2 Housing (Rev. K and subsequent) . . . . . . . . . . . . . . . . . . . . . . . O 1 C264-1 Housing (Ref; Rev. J and prior, no longer available) 21 A215-382 O-Ring (use only with C263-2 sump; install using item 88) . . . . X 1 C215-279 O-Ring (use only with C263-1 sump; install using item 88) . . . . X 1 22 C263-2 Sump (requires A215-222 o-ring) . . . . . . . . . . . . . . . . . . . . . . . O 1 C263-1 Sump (requires C215-279 o-ring) . . . . . . . . . . . . . . . . . . . . . . . O 1 23 A215-017 O-Ring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 24 B566-1* Chip Detector (“quick release”, includes items 26, 74, and 77) . . X 1 25 C049-4 Harness Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 26 — Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O 1 27 AN960PD416L Washer (or A141-0XX; XX = thickness in thousandths in.) . . . X A/R 28 NAS1304-15 Bolt (vary length as required) . . . . . . . . . . . . . . . . . . . . . . . . . . X 12 29 AN814-8D Filler Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 30 A215-029 O-Ring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 31 C266-1 Spacer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 32 C966-3 Seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 33 A215-156 O-Ring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 34 C270-1 End Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 35 NAS1149F0463P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 17 36 NAS1352-4-12 Screw ([6] required for C006-3 assembly) . . . . . . . . . . . . . . . . X 3 37 C244-1 Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 38 C049-5 Harness Assembly – Overtemp Switch . . . . . . . . . . . . . . . . . . . X 1 39 NAS6603-8 Bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 40 MS24566-1B Pulley (or AN210-1A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 41 D117-1 Guard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 42 A130-41 Spacer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 43 C130-3 Spacer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 44 C006-2 Rotor Brake Assembly (see Figure 63-7) . . . . . . . . . . . . . . . . . . X 1 45 D110-1 Arm Assembly – Upper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 46 D774-4 Spring (Associated Spring part no. C0420-063-2000S) . . . . . . X 1 47 D123-1 Arm Assembly – Lower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 Page 63.2 Chapter 63 Main Rotor Drive System FEB 2025 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES FIGURE QTY AND PART NUMBER DESCRIPTION PARTS PER INDEX AVAIL NUMBER ASSY NOTES * Lubricate with water or A257-8 rubber lubricant during installation. ** Use correct gearbox oil per R44 Service Letter SL-73. Continues FEB 2025 Chapter 63 Main Rotor Drive System Page 63.3 MAIN ROTOR GEARBOX AND MAST ASSEMBLY (Cont’d) 63-1-48 NAS428-3-14 Bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 49 D049-4 Harness Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 50 C130-4 Spacer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 51 B320-2 Sender Assembly (Incl item 52) . . . . . . . . . . . . . . . . . . . . . . . . X 2 52 — Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O 4 53 D114-1 Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 54 NAS1352-4-30 Screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 3 55 B570-1 Magnet Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 56 C908-1 Yoke Assembly (Includes item 55. Coat splines of C146-2 pinion with B270-21 protectant before installing yoke assembly.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 57 C141-10 Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 58 MS24665-300 Cotter Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 59 AN320-8 Nut (install with B270-11 on threads) . . . . . . . . . . . . . . . . . . X 1 60 D210-10 Nut (install with A257-9 anti-seize on threads) . . . . . . . . . . . . . X 4 61 A141-21 Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 62 C020-1 Upper Frame (Ref) 63 C796-2 Shim (3 maximum per aft pad) . . . . . . . . . . . . . . . . . . . . . . . . . X A/R 64 A796-1 Shim (3 maximum per fwd pad) . . . . . . . . . . . . . . . . . . . . . . . . X A/R 65 C653-3* Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 66 A653-2* Mount (supersedes A653-1; if replacing a -1 mount, replace both forward mounts) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 67 C796-3 Spacer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 68 A267-1 Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 69 NAS1149F1063P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R 70 A650-4 Fitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 71 C130-21 Spacer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 72 C345-1 Strut Weldment (Ref) 73 A654-56 Decal (Ref; main rotor gearbox fill/oil instructions. No longer available. Superseded by F654-13 decal. See Figure 11-5.) 74 A130-14 Spacer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 75 A257-22** Oil – Gear (1gallon) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R A257-22QT** Oil – Gear (1quart) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R A257-2** Oil – Gear (1gallon) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R A257-2LT** Oil – Gear (1liter) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES FIGURE QTY AND PART NUMBER DESCRIPTION PARTS PER INDEX AVAIL NUMBER ASSY NOTES MAIN ROTOR GEARBOX AND MAST ASSEMBLY (Cont’d) 63-1-76 NAS1352-4-16 Screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 6 77 012C O-Ring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 78 C261-1 Mast Fairing Assembly (Ref, see also Figure 53-11) . . . . . . . . . X 2 79 C747-1 Baffle Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 80 C283-1 Mast Assembly (Ref; earlier gearboxes. Use with item 81.) 81 B115-1 Bearing (install using item 82) . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 82 B270-10 Adhesive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R 83 C648-2 Bearing – Journal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 84 D500-1 Pump (Ref, see Figure 29-19 for installation) 85 NAS1149D0316J Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 86 NAS1149F0432P Washer (or NAS1149F0463P to fill gap) . . . . . . . . . . . . . . . . . . X A/R 87 C146-5 Gear Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O 1 C146-1 Gear Set (Ref, earlier R44’s) 88 A257-19 Lubricant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 89 — Data Plate (C146 Gear Set, Ref) 90 — Data Plate (MRGB Housing, Ref) 91 — Data Plate (C006 MRGB, Ref) * * * 92 MS20074-04-04 Bolt (earlier non-hydraulic R44s) . . . . . . . . . . . . . . . . . . . . . . . . X 4 93 A7260 Chip Detector (Ref; no longer available) 94 AS111 O-Ring (use only with item 92) . . . . . . . . . . . . . . . . . . . . . . . . . X 1 95 C647-1 Bearing (main rotor shaft upper bearing, not shown) . . . . . . . . . O 1 Page 63.4 Chapter 63 Main Rotor Drive System FEB 2025 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES FIGURE QTY AND PART NUMBER DESCRIPTION PARTS PER INDEX AVAIL NUMBER ASSY FORWARD FLEX PLATE INSTALLATION 63-13-1 C908-1 Yoke (Ref) 2 NAS6606-5 Bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 3 NAS1149F0632P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 12 4 C947-1 Flex Plate Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 5 D210-6 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 6 6 B330-19 Palnut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 7 C191-1 Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 8 NAS6606-31 Bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 9 C553-1 Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 10 C907-1 Yoke (shaft length – 2.76 in.) . . . . . . . . . . . . . . . . . . . . . . . . X 1 C907-2 Yoke (shaft length – 2.90 in.) . . . . . . . . . . . . . . . . . . . . . . . . X 1 11 NAS1149F0632P* Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R NOTES * Determine shim washers required for sheave alignment per R44 Maintenance Manual Section 7.230. FEB 2025 Chapter 63 Main Rotor Drive System Page 63.13 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES FIGURE QTY AND PART NUMBER DESCRIPTION PARTS PER INDEX AVAIL NUMBER ASSY Page 63.14 FIGURE 63-15 CLUTCH ASSEMBLY FEB 2025 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES 1, 12,39 23 4 CLUTCH ASSEMBLY 63-15-1 C018-4 Clutch Assembly (Anodized sheave. Includes items 3 thru 11, 12 [C170-2], 13 thru 20, 32, 33, 35 and C188-3 sprag clutch.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 C018-4R C018-4 Clutch Assembly (Overhaul exchange; requires core deposit. Includes new C166-5 shaft.) . . . . . . . . . . . . . . . . . . X 1 C018-5 Clutch Assembly (Metalized sheave. Includes items 3 thru 11, 12 [C170-3], 13 thru 20, 32, 33, 35 and C188-3 sprag clutch.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 C018-5R C018-5 Clutch Assembly (Overhaul exchange; requires core deposit. Includes new C166-5 shaft.) . . . . . . . . . . . . . . . . . . X 1 2 C195 Yoke (Ref, see Figure 65-1) 3 NAS6603-28 Bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 4 NAS1149F0332P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 5 C191-5 Stop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 6 C184-2 Bearing Assembly – Upper . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 C184-2R C184-2 Bearing Assembly – Upper (overhaul exchange) . . . . X 1 7 MS21042L3 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 8 NAS6605-42 Bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 12 9 NAS1149F0532P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 24 10 C168-5 Retainer (Incl items 32 and 33) . . . . . . . . . . . . . . . . . . . . . . . X 2 11 A215-152 O-Ring (used only with items 35 and 36) . . . . . . . . . . . . . . . . . . . . . . . X 2 12 C170-2 Sheave – Upper (anodized) . . . . . . . . . . . . . . . . . . . . . . . . . . O 1 C170-3 Sheave – Upper (metalized) . . . . . . . . . . . . . . . . . . . . . . . . . . O 1 13 C967-1 Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O 2 14 C966-5 Seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 15 MS21042L5 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 12 16 C166-4 Shaft – Clutch (Ref) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O 1 17 NAS1352-08LE6P Screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 18 NAS620-8 Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 19 110-3 Telatemp (temperature recorder 180°-230°F) . . . . . . . . . . . . X 1 20 A257-4 Oil – Type “A” ATF (Dexron III) . . . . . . . . . . . . . . . . . . . . . . . X A/R 21 C907 Yoke (Ref, see Figure 63-13) 22 NAS6604-21 Bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 NOTES Continues FEB 2025 Chapter 63 Main Rotor Drive System Page 63.15 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES FIGURE QTY AND PART NUMBER DESCRIPTION PARTS PER INDEX AVAIL NUMBER ASSY -- CLUTCH ASSEMBLY (Cont’d) 63-15-23 B330-13 Palnut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 24 D210-4 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 25 A101-4 Rod End . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 26 MS20002-4 Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 27 NAS1149F0432P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 28 NAS6604-11 Bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 29 B330-16 Palnut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 30 AN316-5R Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 31 A344-2 Strut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 32 B289-3 Screw (Incl item 33) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 33 — O-Ring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O 2 34 C168-4 Retainer (Ref; superseded by item 10) 35 C167-6 Housing (Ref; part no. stamped on either side of face) 36 C167-5 Housing (Ref; part no. stamped on either side of face) 37 C167-3 Housing (Ref; superseded by item 36) 38 A215-042 O-Ring (used only with item 37) . . . . . . . . . . . . . . . . . . . . . . . X 2 39 C018-2 Clutch Assembly (Ref; no longer available. Anodized sheave. Superseded by item 1 [C018-4]. Includes items 3 thru 11, 12 [C170-2], 13 thru 20, 32, 33, 36 and C188-3 sprag clutch.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O 1 C018-3 Clutch Assembly (Ref; no longer available. Metalized sheave. Superseded by item 1 [C018-5]. Includes items 3 thru 11, 12 [C170-3], 13 thru 20, 32, 33, 36 and C188-3 sprag clutch.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O 1 *** 40 KI-202 Retainer Upgrade Kit (Incl items 10, 14, 32, and 38) . . . X 1 NOTES Page 63.16 Chapter 63 Main Rotor Drive System FEB 2025 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES FIGURE QTY AND PART NUMBER DESCRIPTION PARTS PER INDEX AVAIL NUMBER ASSY -- TAIL ROTOR GEARBOX SEALS 65-11-1 MS24665-300 Cotter Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 2 C116-1 Yoke (Coat splines of input shaft with B270-21 protectant before installing yoke.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 3 AN320-8 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 4 A141-10 Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 5 C112-1 Cap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 6 A215-140 O-Ring (install using item 7) . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 7 A257-22* Oil – Gear (1gallon) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R A257-22QT* Oil – Gear (1quart) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R A257-2* Oil – Gear (1gallon) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R A257-2LT* Oil – Gear (1quart) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R 8 A966-3 Seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 9 C141-2 Washer (Ref, between cap and input cartridge) . . . . . . . . . . . . . O 1 10 C266-2 Spacer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 11 C110-1 Input Cartridge (Ref) 12 MS20074-04-06 Bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 8 13 MS20995C032 0.032 in. dia. Safety Wire . . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R 14 NAS1149F0432P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 8 15 A215-024 O-Ring (install using item 7) . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 16 C109-2 Housing (Ref) 17 C107-2 Shaft - Output (Ref) C107-1 Shaft - Output (Ref) 18 C966-2 Seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 19 A215-133 O-Ring (install using item 7) . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 20 C112-2 Cap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 21 C021-1 Tail Rotor Gearbox Assembly (Ref; Incl items 1 thru 20) NOTES * Use correct gearbox oil per R44 Service Letter SL-73. FEB 2025 Chapter 65 Tail Rotor Drive System Page 65.11 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES FIGURE QTY AND PART NUMBER DESCRIPTION PARTS PER INDEX AVAIL NUMBER ASSY Intentionally Blank Page 65.12 Chapter 65 Tail Rotor Drive System FEB 2025 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES CHAPTER 67 FLIGHT CONTROLS Figure Title Page 67-1 Cyclic Control System - Electric Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67.0 67-7 Cyclic Stick Assembly - Electric Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67.6 67-9 Forward Cyclic Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67.8 67-11 Cyclic Grip Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67.10 67-15B Cyclic Grip Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67.15A 67-17 Cyclic Friction Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67.16 67-21 Collective Stick Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67.20 67-25 Collective Spring Assembly - Electric Trim . . . . . . . . . . . . . . . . . . . . . . . . 67.24 67-27 Main Rotor Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67.26 67-31 Main Rotor Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67.30 67-35 Main Rotor Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67.34 67-39 Torque Tube Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67.38 67-41 Aft Support Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67.40 67-45 Aft Support Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67.44 67-49 Push-Pull Tube Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67.48 67-53 Jackshaft Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67.52 67-57 Jackshaft Support Weldment Installation . . . . . . . . . . . . . . . . . . . . . . . . . 67.56 67-59 Jackshaft Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67.58 67-61 Swashplate Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67.60 67-65 Swashplate Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67.64 67-69 Swashplate Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67.68 67-73 Swashplate Ball Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67.72 67-75 Swashplate Ball Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67.74 67-77 Tail Rotor Controls - Pedals Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 67.76 67-81 Tail Rotor Controls - Pedals Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 67.80 67-85 Tail Rotor Controls - C317 Bellcrank . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67.84 67-89 Tail Rotor Controls - C316 Bellcrank . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67.88 67-91 Tail Rotor Controls - C331 Bellcrank . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67.90 FEB 2025 Chapter 67 Flight Controls Page 67.i ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES Page 67.0 FIGURE 67-1 CYCLIC CONTROL SYSTEM - ELECTRIC TRIM FEB 2025 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES ~ 8 0: 2 PUSH-PULL TUBE ASSEMBLIES 67-49-1 D173-2 Rod End . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 2 B330-19 Palnut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 3 AN316-6R Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 4 C121-31 Push-Pull Tube Assembly (Includes items 1 thru 3. Supersedes C121-25; must use C121-31 on R44 II.) . . . . . . . X 3 5 NAS6605-9 Bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 3 6 NAS1149F0532P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 6 7 D200-1* Clevis (Ref) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 3 8 D210-5 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 3 9 B330-16 Palnut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 3 10 B330-19* Palnut (Ref) NOTES * See also Figure 29-3 and Figure 29-1. FEB 2025 Chapter 67 Flight Controls Page 67.49 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES FIGURE QTY AND PART NUMBER DESCRIPTION PARTS PER INDEX AVAIL NUMBER ASSY Page 67.50 Chapter 67 Flight Controls FEB 2025 Intentionally Blank ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES FEB 2025 Chapter 67 Flight Controls Page 67.51 Intentionally Blank ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES Page 67.52 FIGURE 67-53 JACKSHAFT INSTALLATION FEB 2025 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES SWASHPLATE INSTALLATION 67-61-1 NAS6604-24* Bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 2 AN970-4** Washer (A/R for balance) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R 3 A255-1** Counter Weight (1.10 in. O.D.) . . . . . . . . . . . . . . . . . . . . . . . . . X A/R A255-2** Counter Weight (1.90 in. O.D.) . . . . . . . . . . . . . . . . . . . . . . . . . X A/R 4 C203-5 Yoke Assembly (includes item 13) . . . . . . . . . . . . . . . . . . . . . . X 2 5 NAS1149F0432P Washer (or NAS1149F0463P as required for proper thread engagement) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R 6 D210-4 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 7 B330-13 Palnut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 8 NAS6604-24 Bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 9 NAS1149F0432P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 10 B330-16 Palnut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 13 11 D210-5 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 13 12 NAS1149F0563P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 13 A210-1 Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 14 C648-2 Bearing – Journal (install wet; see R44 MM § 23-75 for approved primer) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 15 NAS6605-28 Bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 16 C141-19 Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 8 17 C117-67 Shim (thickness = 0.016 in.) . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R C117-68 Shim (thickness = 0.020 in.) . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R C117-69 Shim (thickness = 0.025 in.) . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R 18 C105-6 Journal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 8 19 C204-3 Arm (upper 2.87 inches long) . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 20 NAS6605-31 Bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 21 A205-7 Fork Assembly (includes item 14 [2], install using item 51) . . . . X 2 22 MS3367-7-9 Ty-Rap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 23 C480-1 Boot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 24 MS3367-6-0 Ty-Rap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 25 NAS6605-18 Bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 26 C141-1 Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 6 27 NAS1149F0532P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 9 28 C115-1 Spacer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 14 29 C016 Blade Assembly – Main Rotor (Ref) NOTES * Select bolt length which, after correct torque is applied, exposes 2 to 4 threads beyond nut. ** For main rotor balance adjustment, refer to R44 MM § 10.231 Part C. Continues FEB 2025 Chapter 67 Flight Controls Page 67.61 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES FIGURE QTY AND PART NUMBER DESCRIPTION PARTS PER INDEX AVAIL NUMBER ASSY SWASHPLATE INSTALLATION (Cont’d) 67-61-30 AN316-6R Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 31 B330-19 Palnut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 32 D173-3 Rod End . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 33 C258-1 Pitch Link Assembly (Incl items 34 thru 49, and 50) . . . . . . . . . X 2 34 MS20995C32 0.032 in. dia. Safety Wire . . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R 35 A255-3 Counter Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 36 NAS1352N08-4 Screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 37 B769-2 Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 38 C204-2 Arm – Lower (2.520 inches long) . . . . . . . . . . . . . . . . . . . . . . . X 1 39 C017-6 Swashplate Assembly (Incl items 36, 37,40, 41, 42, 44, and 53) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 C017-6R C017-6 Swashplate Assembly (Overhaul exchange; requires core deposit.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 40 C199-2 Swashplate Assembly – Upper (Ref) 41 C769-2 Interrupter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 42 MS20470AD3 Rivet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 43 NAS6605-17 Bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 44 F198-1 Swashplate Assembly – Lower (Ref) 45 D173-3 Rod End . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 46 B330-19 Palnut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 47 AN316-6R Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 48 C258-2 Fitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 49 21FKF-813 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 50 C258-4 Link Assembly (includes C258-3 link and items 45 thru 47) . . . X 1 51 B270-13 Sealant (to fill cavity in item 21) . . . . . . . . . . . . . . . . . . . . . . . . X A/R 52 C648-2 Bearing (Ref) 53 C647-12 Bearing Set (life-limited component, see MM § 3.100; not shown) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O 1 *** 54 KI-6604 R44-series & R66 C017-5 Swashplate Installation Parts Kit Instructions (Contains parts to install C017-6 swashplate assembly and supersedes R7983 kit. Does not include swashplate or C284 tube assembly . . . . . . . . . . . . . . . . . . . . X A/R Page 67.62 Chapter 67 Flight Controls FEB 2025 NOTES ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES FIGURE QTY AND PART NUMBER DESCRIPTION PARTS PER INDEX AVAIL NUMBER ASSY CHAPTER 71 POWERPLANT Figure Title Page 71-1 Forward Engine Mounts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.0 71.2A C174-7 Aft Engine Mount Support Weldment . . . . . . . . . . . . . . . . . . . . . . 71.2 71-3 C174-1 Aft Engine Support Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.2B 71-5 O-540 Powerplant Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.4 71-9 IO-540 Powerplant Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.8 71-11B Air/Oil Separator Assembly Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 71.11A 71-13 Air Induction System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.12 71-17 Air Induction System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.16 71-21 Exhaust Muffler Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.20 71-25 Exhaust Muffler Shield Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.24 71-27 Scroll Assembly without A/C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.26 71-29 Scroll Assembly with A/C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.28 71-31 Left Side Cooling Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.30 71-35 Left Side Cooling Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.34 71-37 Left Side Cooling Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.36 71-41 Right Side Cooling Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.40 71-45 Right Side Cooling Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.44 71-49 Main Rotor Gearbox Cooling Hoses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.48 71-49B Alternator Installation (24V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.49A 71-51 Alternator and Starter Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.50 71-55 Starter Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.54 71-59 130-Amp 28V Alternator Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.58 71-63 Alternator Control Unit Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.62 71-65 D174 Fanwheel Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.65 FEB 2025 Chapter 71 Powerplant Page 71.i ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES Page 71.0 FIGURE 71-1 FORWARD ENGINE MOUNT FEB 2025 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES 6 7 I I ..FORWARD FORWARD ENGINE MOUNTS 71-1-1 B330-24 Palnut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 2 D210-8 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 3 NAS1149F0832P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 4 C141-9 Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 5 NAS1149F0632P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 6 NAS1352-6H48P Screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 7 MS20995C32 0.032 in. dia. Safety Wire . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R 8 C593-3 Engine Mount Assembly (Incl item 9) . . . . . . . . . . . . . . . . . . . X 2 C593-4 Block (Ref) 9 C653-2 Mount (Lubricate with water or A257-8 rubber lubricant during installation.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 10 C046 Lower Frame Assembly (Ref) 11 MS20002C8 Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 12 AN8-31A Bolt (or NAS6608-39) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 13 C145 Engine Assembly (Ref; see Figures 71-5 and 71-9) NOTES FEB 2025 Chapter 71 Powerplant Page 71.1 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES FIGURE QTY AND PART NUMBER DESCRIPTION PARTS PER INDEX AVAIL NUMBER ASSY Page 71.2 FIGURE 71-2A C174-7 AFT ENGINE MOUNT SUPPORT WELDMENT FEB 2025 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES NOTES * Lycoming part number. C174-7 AFT ENGINE MOUNT SUPPORT WELDMENT 71-2A-1 C020 Upper Frame Assembly (Ref; see Figure 53-19) 2 NAS6605-9 Bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 3 NAS1149F0532P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 4 D210-5 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 5 B330-16 Palnut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 6 D173-2 Rod End . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 7 AN316-6R Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 8 B330-19 Palnut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 9 NAS6604-8 Bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 10 NAS1149F0432P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 6 11 D210-4 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 3 12 B330-13 Palnut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 13 A101-4 Rod End . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 14 AN316-5R Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 15 C174-7 Support Weldment (coat tube interiors with B270-21 protectant) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 16 C592-4 Mount Assembly (incl item 17) . . . . . . . . . . . . . . . . . . . . . . . X 1 C592-5 Block (Ref) 17 C653-1 Mount (Lubricate with water or A257-8 rubber lubricant during installation.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 18 C592-6 Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 19 NAS1149F0832P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 20 D210-8 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 21 B330-24 Palnut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 22 NAS6604-34 Bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 23 C130-42 Spacer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 24 C174-11 Plate Weldment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 25 72053* Gasket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 26 STD-35* Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 27 STD-475* Washer (internal teeth) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 28 STD-1410* Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 29 C145 Engine Assembly (Ref; see Figures 71-5 and 71-9) FEB 2025 Chapter 71 Powerplant Page 71.2A ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES FIGURE QTY AND PART NUMBER DESCRIPTION PARTS PER INDEX AVAIL NUMBER ASSY Page 71.2B FIGURE 71-3 C174-1 AFT ENGINE SUPPORT ASSEMBLY FEB 2025 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES C174-1 AFT ENGINE SUPPORT ASSEMBLY 71-3-1 C020 Upper Frame Assembly (Ref; see Figure 53-19) 2 NAS6604-8 Bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 3 NAS1149F0432P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 4 A101-4 Rod End . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 5 B330-16 Palnut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 6 AN316-5R Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 7 D210-4 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 8 B330-13 Palnut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 9 C174-1 Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 10 D210-5 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 11 NAS1149F0532P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 12 NAS6605-9 Bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 13 D173-2 Rod End . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 14 B330-19 Palnut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 15 AN316-6R Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 16 AN6-23A Bolt (or NAS6606-30) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 17 A141-23 Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 18 C592-2 Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 19 NAS1149F0632P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 20 D210-6 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 21 NAS6608-20 Bolt (or AN8-20A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 22 NAS1149F0832P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 23 C653-1 Mount (Lubricate with water or A257-8 rubber lubricant during installation.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 24 D210-8 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 25 B330-24 Palnut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 26 72053* Gasket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R 27 C592-3 Engine Mount (Ref, includes item 23.) 28 STD-35* Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 29 STD-475* Washer (internal teeth) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 30 STD-1410* Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 31 B330-15 Palnut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 NOTES * Lycoming part number. FEB 2025 Chapter 71 Powerplant Page 71.3 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES FIGURE QTY AND PART NUMBER DESCRIPTION PARTS PER INDEX AVAIL NUMBER ASSY Page 71.4 FIGURE 71-5 O-540 POWERPLANT COMPONENTS FEB 2025 ILLUSTRATED PAR TS CATALOG R44 SERIES IO-540 POWERPLANT COMPONENTS (Cont’d) 71-9-53 STD-160* Lockwasher . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O 1 54 — Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O 1 NOTES * Lycoming part no. FEB 2025 Chapter 71 Powerplant Page 71.11 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES FIGURE QTY AND PART NUMBER DESCRIPTION PARTS PER INDEX AVAIL NUMBER ASSY Page 71.11A FIGURE 71-11B AIR/OIL SEPARATOR ASSEMBLY INSTALLATION FEB 2025 ROBINSON ILLUSTRATED PARTS CATALOG 1 / I ~/-......_I I/ ~ r{{tf:'i ,=-- Ii ~ {rr · ~· ·· 15 I l ,.-=r,--,...~-• R44 SERIES ?" AIR/OIL SEPARATOR ASSEMBLY INSTALLATION 71-11B-1 C145 Engine Assembly (Ref; see Figures 71-5 & 71-9) 2 STD-1821* Hose (Ref) 3 LW-15592-5-05* Clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 4 C729-1** Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 5 C729-2 Fitting (Install in item 4; apply item 6 to threads and install fully bottomed.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 6 B270-20 Adhesive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R 7 A729-77 Tube . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 8 C046 Fame Assembly - Lower (RH, Ref) 9 MS21919WDG8 Clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 10 MS27039C0806 Screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 3 11 STD-160* Lockwasher . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 12 LW-25-0.94* Bolt (1/4-20 x 15/16 length) . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 13 C729-14 Bracket Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 14 B277-4 Clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 15 MS21919WDG14 Clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 16 C728-2 Separator Assembly – Air/Oil . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 17 B277-12 Clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 18 A785-43 Hose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 19 72996* Fitting (breather, Ref) 20 NAS1149FN816P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 21 MS21042L08 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 22 C015 Cabin Assembly (Ref) NOTES * Lycoming part no. ** Install using B270-6 sealant or A701-11 tape on threads. FEB 2025 Chapter 71 Powerplant Page 71.11B ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES FIGURE QTY AND PART NUMBER DESCRIPTION PARTS PER INDEX AVAIL NUMBER ASSY Page 71.12 FIGURE 71-13 AIR INDUCTION SYSTEM FEB 2025 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES NOTES * Earlier R44s. EXHAUST MUFFLER SHIELD ASSEMBLY 71-25-1 C169-35 Exhaust Muffler Assembly (Ref) C169-37 Exhaust Muffler Assembly (Ref, not shown) C169-1* Exhaust Muffler Assembly (Ref, not shown) C169-31* Exhaust Muffler Assembly (Ref, not shown) 2 C169-18 Tail Pipe (Ref) 3 B277-036 Clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 4 D314-2 Shield Assembly (RH) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 5 D314-1 Shield Assembly (LH) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 6 B277-48 Clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 7 D317-1 Shield Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 FEB 2025 Chapter 71 Powerplant Page 71.25 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES FIGURE QTY AND PART NUMBER DESCRIPTION PARTS PER INDEX AVAIL NUMBER ASSY Page 71.26 FIGURE 71-27 SCROLL ASSEMBLY – WITHOUT A/C FEB 2025 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES 30 :-,, (\) (\) (\)~ (I) 30 29 \ ~ ~ 10 6w 2626, ~ ,---" 5 ./ <~ "" a ►.. - ~"" > • " ._,'--- <--- ~, <" "~ " 2 " 3 " ,-------- -~- / > (I~------- 3 2 12 6 5 SCROLL ASSEMBLY – WITHOUT A/C 71-27-1 C236-1 Scroll Assembly - Upper (Incl items 7, 8, 9, 11, 20, 17, 18, and 23. To replace order item 33.) . . . . . . . . . . . . . . . . . . . . . O 1 2 NAS1149FN816P Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 66 3 MS21042L08 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 66 4 MS27039C0806 Screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 62 5 D229-2 Retainer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 6 D229-3 Seal (install RH over LH) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 7 A185-7 Plate (thread) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 A185-3 Plate (Install using items 26 & 29) . . . . . . . . . . . . . . . . . . . . . X 4 8 MS20470AD4 Rivet (NAS9301B-4-02 or NAS9301B-4-03 blind; optional) . . X 5 9 A185-8 Bracket (LH) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 10 MS21075L3E Nutplate (install using item 18 [4]) . . . . . . . . . . . . . . . . . . . . . X 2 11 A185-9 Bracket (RH) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 12 D229-1 Lip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 2 13 C236-2 Scroll Assembly - Lower (Incl items 7, 8, 14, 17, 18, 22, 23, and 25) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 14 A185-6 Bracket (lower) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 15 A785-12 Hose (Scroll-to-muffler shroud. Ref; see Figure 21-37.) 16 D229-4 Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 17 MS21069L08 Nutplate (install using item 18) . . . . . . . . . . . . . . . . . . . . . . . X 6 18 MS20426AD3 Rivet (or MS20605R3W2 at item 17) . . . . . . . . . . . . . . . . . . X 16 19 NAS1352-08-8P Screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 5 20 D168-1 Vane Assembly (install using item 8) . . . . . . . . . . . . . . . . . . . . X 1 21 NAS620-5 Washer (for shimming between items 1 and 20, [2] places) . . X A/R 22 A701-1 Tape - Aluminum (1 in. width) . . . . . . . . . . . . . . . . . . . . . . . . . X A/R 23 D216-1 Screw (or 91266A192 Screw) . . . . . . . . . . . . . . . . . . . . . . . X 12 24 B277-36 Clamp (Ref, see Figure 21-37) 25 A701-2 Tape-Aluminum (6 in. width) . . . . . . . . . . . . . . . . . . . . . . . . . . X A/R 26 MS20426AD5 Rivet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 27 A185-2 Bracket (LH) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 A185-5 Bracket (RH; not shown) . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 28 A185-1 Bracket (lower) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 1 NOTES Continues FEB 2025 Chapter 71 Powerplant Page 71.27 ROBINSON ILLUSTRATED PARTS CATALOG R44 SERIES FIGURE QTY AND PART NUMBER DESCRIPTION PARTS PER INDEX AVAIL NUMBER ASSY SCROLL ASSEMBLY – WITHOUT A/C (Cont’d) 71-27-29 MS20470AD5 Rivet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 8 30 A185-3 Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 4 31 MS27039C0807 Screw (Install 180° apart.) . . . . . . . . . . . . . . . . . . . . . . . .

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