Bendix PS Series Carb Manual (pdf file - Navioneers

CESSNA L19 305A BIRD DOG · Flight Manual

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Overview

This document is a collection of service bulletins specifically for the Cessna L-19 Bird Dog. It is intended for maintenance personnel and pilots who operate this aircraft model. The bulletins provide critical updates, maintenance procedures, and safety information necessary for the proper upkeep and operation of the L-19 Bird Dog. Each bulletin addresses specific issues or improvements that have been identified, ensuring that operators are informed of the latest recommendations and requirements. This document serves as an essential reference for maintaining the airworthiness and safety of the aircraft.

Perform engine oil changes every 50 hours of operation.
Inspect control surfaces before each flight and every 100 flight hours.
Check electrical connections for security and corrosion regularly.
Conduct monthly checks of safety equipment, including fire extinguishers.
Follow all service bulletins to maintain airworthiness and safety.

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Originally published by www.navioneer.org. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.

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Document details

Type: Flight Manual
Pages: 51
File size: 13 MB
Publisher: www.navioneer.org

Documentation completeness

4/7

Most owners only have the POH. Here's the essential set for the CESSNA L19 305A BIRD DOG.

Pilot's Operating Handbook / AFM
Checklist
Maintenance Manual
Parts Catalog (IPC)
Systems & Wiring
Service Bulletins
Type Certificate (TCDS)

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In this document

Introduction

The introduction outlines the purpose of the service bulletins, emphasizing the importance of adhering to the recommended maintenance practices for the Cessna L-19 Bird Dog. It highlights the aircraft's operational capabilities and the need for regular inspections and updates.

Bulletin 1: Engine Maintenance

This section details the recommended procedures for engine maintenance, including oil change intervals, inspection of engine components, and troubleshooting common issues. Specific intervals are provided, such as oil changes every 50 hours of operation.

Bulletin 2: Control Surface Inspection

Guidelines for inspecting control surfaces are outlined here, including checks for wear and damage. The bulletin specifies that control surfaces should be inspected before each flight and detailed inspections should occur every 100 flight hours.

Bulletin 3: Electrical System Updates

This bulletin discusses updates to the electrical system, including wiring checks and component replacements. It emphasizes the importance of ensuring all electrical connections are secure and free from corrosion.

Bulletin 4: Safety Equipment Checks

Recommendations for checking safety equipment, such as fire extinguishers and first aid kits, are provided. The bulletin states that these checks should be performed monthly to ensure readiness.

Safety notes

Failure to adhere to maintenance schedules can lead to safety hazards.
Inspecting control surfaces is critical for flight safety.
Neglecting electrical system checks may result in in-flight failures.

Full document text

Y OPERATION V INSTALLATION Y ADJUSTMENT V SERVICE Bendix PS SERIES CARBURETOR MANUAL Bendix DIVISION PRODUCTS BENDIX AVIATION CORPORATION SOUTH BEND 20, INDIANA This look belongs to: Po. S. Vengon and Lens b bily BENDIX PS SERIES CARBURETOR MANUAL • OPERATION • INSTALLATION • ADJUSTMENT • SERVICE PREPARED by THE AIRCRAFT FUEL METERING TECHNICAL SERVICE DEPT. Copies of this publication may be ordered directly from the Bendix Distributor in your locale ar by contacting the Aircraft Publications Section, Bendix Products Division, Bendix Aviation Corp., South Bend 20, Indiana. In order to insure earliest possible delivery, orders should be accompanied by a check or money order. PRICE $1.00 BENDIX PRODUCTS DIVISION SOUTH BEND 20 Bendix INDIANA, U. S. A. FOREWARD Copyright 1956 BENDIX AVIATION CORPORATION South Bend 20, Indiana This service manual has been prepared and distributed by the Aircraft Fuel Metering Technical Service Depart- ment of the Bendix Products Division and is intended for use by service personnel responsible for the installation, adjustment, and maintenance of the PS Series Carburetors. Every effort has been made to include specific carburetor instructions for each current model aircraft and engine incorporating a PS type carburetor. If any manufacturer, certain model aircraft or specific engine has been omitted, it is because the necessary information was not available at the time of printing. This manual is to be revised annually so that maintenance personnel will be informed of the latest service procedures and modifications. If, in the opinion of any reader, certain information or procedures have been omitted, an endeavor will be made to include such information in future revisions by directing your comments and suggestions to the above office. Form No. 15-186 Printed in U. S. A. 8-1-56 TABLE OF CONTENTS INTRODUCTION SECTION I-DESCRIPTION SECTION II General... Model Designation Identification.... Application Charts.. PRINCIPLES OF OPERATION General Air Section 6 . 19 .. 16 52 52 Fuel Section 53 Acceleration Pump 56 Manual Mixture Control. 57 Idle Cut-Off... 58 Airflow Power Enrichment Valve. 58 Automatic Mixture Control Assembly. 60 SECTION III-INSTALLATION Engine . 62 Air Scoop... .. 63 Fuel Systems and Connections .. 68 Throttle and Mixture Control Levers Preparation for Use..... .. 69 .70 SECTION IV FIELD ADJUSTMENTS INTRODUCTION TOTAL FUEL Idle Speed and Mixture Adjustment.......... 72 Enrichment Valve Adjustment..... ... 74 Disch ge Nozzle (Metered Fuel Pressure) Ad- justrent....... ..... 77 SECTION V MAINTENANCE, LUBRICATION AND PREPARA- TION FOR STORAGE Maintenance.. 81 Lubrication... 83 Preparation for Storage.. . 83 SECTION VI-GROUND AND FLIGHT, CARBURETOR NOTES Induction System Icing. 85 Vaporization Icing.. . 85 Atmospheric Icing.. . 85 Rain . 85 Ice and Snow... . 88 Flight Notes on the Automatic Mixture Control and Airflow Enrichment Valve.... ... 86 -2- Carburetion as applied to the modern aircraft reciprocating engine presents one of the most complex and difficult problems of engine development and operation. If the engine is not supplied with just the right fuel-air ratio under all conditions of flight, the performance will of course, be affected, and in some cases severe damage to the engine may result. The modern aircraft carburetor must maintain the proper fuel-air ratio for the engine at all conditions of air pressure and temperature, throttle opening, engine speed, flight attitude, acceleration and maneuvers. It must supply a mixture in the idle range that is rich enough to give smooth idling, yet lean enough to prevent the engine from loading up. In the cruise range the mixture is usually held as lean as possible to afford good fuel economy. In the high power range a rich mixture is necessary to both inhibit detonation and to decrease the amount of air cooling necessary. As a result, the aircraft carburetor has become a highly developed and complicated mechanism which is very accurate. It should be considered a precision instrument and treated as such, for it is manufactured with extreme care. To obtain the maximum in per- formance and service, the carburetor must be installed and adjusted in accordance with the manufacturer's recommendations. -3- PS-5C PS-5BD PS-7BD -5- PSD-5C SECTION I DESCRIPTION GENERAL 1-1. The Stromberg PS series injection carburetors are distinctly different from float type carburetors of the same size and power range, as they do not incorporate a vented float chamber or suction pickup from a discharge nozzle in the venturi tube. Instead they offer a pressure fed fuel system that is closed from the engine fuel pump to the discharge nozzle. The venturi serves only to create pressure dif- ferentials for controling the quantity of fuel to the metering jet in proportion to air flow to the engine. This type of fuel system offers such advantages as: a. As the discharge nozzle is located downstream from the throttle valve, ice formation within the throttle body is eliminated. NON-ICING CHARACTERISTICS b. Freedom from gravity effects; maintains proper fuel/air ratios re- gardless of air- craft attitude. d. Accurate predictability of fuel con- sumption. -7- c. Automatic compensation for temperature and altitude. "D" Downdraft "H" Horizontal e. VERSA- TILITY - with only minor modification (mainly, the location of the vapor vent outlet) they can be adapt- ed for either updraft, downdraft or horizontal operation. b. The number following the dash, such as -5, -7, or -9 indicate the bore size of the carburetor and is used for engineering informa- tion only, as when matching a carburetor to a particular engine. c. Sub-Model designation: "B" - Airflow operated power enrichment valve "C" -Manually controlled power enrichment valve "D" Automatic Mixture Control Unit "E" Electric Primer Assembly 1-2. The standard PS carburetor features a regulated pressure discharge nozzle, vacuum operated acceleration pump, manual

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mixture and idle cut-off device, and either an airflow or manually operated power enrichment valve. Models are also available incor- porating an Automatic Mixture Control Unit and an Electric Primer Assembly. d. Examples: PS-5C, Pressure operated, single barrel, updraft carburetor, incorporating a manually operated power enrichment valve. MODEL DESIGNATION 1-3. The model designation such as PS-5C, PS-5BD, etc., indicate the various features of that particular model carburetor. One should learn to recognize the various models by their proper prefix designations as fol- lows: a. Prefix: "P" Pressure operated "S" Single Barrel PS-5BD, Pressure operated, single barrel, updraft carburetor, incorporating an airflow operated enrichment valve and an automatic Mixture Control Unit. PSH-5CD, Pressure operated, single barrel, horizontal carbur- etor, incorporating a manually operated power enrich- ment valve and an Automatic Mixture Control Unit. PSD-5C, Pressure operated, single barrel, downdraft carbur- etor, incorporating a manually operated power enrich- ment valve. -8- -9- -10- Figure 1. Continental E-225 Engine, Equipped with a Stromberg PS-5C Carburetor (Photo, Courtesy of Continental Motors Corp.) 11- Figure 2. Continental 0-470 Engine, Equipped with a Stromberg PSD-5C Carburetor (Photo, Courtesy of Continental Motors Corp.) -12- Figure 3. Continental GSO-526 B Engine, Equipped with a Stromberg PSH-7BD Carburetor (Photo, Courtesy of Continental Motors Corp.) LYCOMING LYCOMING LYCOMING Figure 4. Lycoming GO-435 Engine, Equipped with a Stromberg PS-5BD Carburetor (Photo, Courtesy of Lycoming Div.) - 14- Figure 5. Lycoming GO-480 Engine, Equipped with a Stromberg PS-5BD Carburetor (Photo, Courtesy of Lycoming Div.) -15- Figure 6. Lycoming GSO-480-A1A Engine, Equipped with a Stromberg PS-7BD Carburetor (Photo, Courtesy of Lycoming Div.) IDENTIFICATION 1-4. Each new carburetor is identified with a specification plate (figure 7), attached to the throttle body. It identifies the carburetor manufacturer, unit serial number, model designation and parts list and issue number to which the carburetor was manufactured. Always refer to the specification plate for the proper model and I.D. CARD TROMBERG CARBURETOR MADE IN U.S.A. MODEL SERIAL NO PART LIST BENDIX AVIATION GORP SOUTH BEND, IND Each chart lists the engine models used and applicable carburetor model and parts list to which the carburetor was built. All carburetor issue up-numbers and the reason for the issue change are included along with the applicable Bendix Service Bulletins affecting the change. 1-6. These charts are revised periodically by the Bendix Products Division and are available to any aircraft service facility upon request. The information pertaining to engine and/or airplane model numbers is as accurate and complete as it is possible to make. However, the engine and/or airplane manufacturers have cognizance over this type of information and their specification or bill of materials take preference. Figure 7. Specification Plate parts list number to which the carburetor was built, before at- tempting any field adjustments. This information must then be matched with the correct manual enrichment adjusting gage, and adjustment instructions for that particular carburetor as outlined in the text. APPLICATION CHARTS 1-5. The following application charts are by aircraft make and model. - 16- -17- -18- Aero COMMANDER 560 (Photo, Courtesy of Aero Design & Engineering Co.) Engine: Lycoming: GO-435-C2 Airplane: Aero-Design Engineering: Aero-Commander 520 Carburetor Model Engine Model GO-480-B, -C1D6 GO-480-D1A GO-480-C1B6 PS-5BD 560 560A L-28B PS-5BD Effective Service Bulletins PS-5BD PS-5BD GO-435-C2 GO-480-B GO-480-D1A GO-480-C1B6 391279 -1 -2 -3 ACSD $773 R.1 M-A #305 R.1 -4 391569 -1 -2 -3 391621 391621 -1 -1 -2 -2 Revisions Effecting Carburetor Parts List Number, or Issue Change. Released to production 5-22-50. No units shipped as issue 1. Idle needle diaphragm change. Mixture control lever changed from 383952 to 365125. Refer to Specification Sheet. To incorporate a new regulator spacer using taper seat plug instead of 1/8" pipe plug. Released to production 3-25-54. Metering change. Refer to Flow & Specification Sheet. Flow limits on earichment valve. Seat changed. Refer to Flow & Spec. Sheet. Released to production 6-27-55. Idle valve assembly changed to improve idle mixture adjustment. -19- ACSB #807 M-A # 381 20 - 20 - Aero COMMANDER 680 (Photo, Courtesy of Aero Design & Enginnering Co.) Engine: Lycoming: GSO-480-A1A6 -21- Carburetor Model PS-7BD Effective Service Bulletins 391454 391638 15 -6 -7 -1 Airplane: Aero-Design Engineering: Aero-Commander 680 AF: L-26C Revisions Effecting Carburetor Parts List Number, or Issue Change. Released to production 4-20-55 at issue -5. Metering change effecting the vacuum reducer, enrichment valve seat and spring. Metering change. Refer to Flow & Specification Sheet. Released to production 12-8-55. Same as 391454 except it incorporates a 30,000 it. setting AMC limit - 23 - - 22 - Beechcraft BONANZA N42100 (Photo, Courtesy of Beech Aircraft Corp.) Engine: Continental: E-165 E-185-1,8,11 E-225-8 Note: E225-8 engines approved for all Bonanza Models PS-5C ENGINES PS-5C E-165 PS-SC E-185-8 Airplane: Beechcraft "Bonanza" Models: A35 D35 G35 B35 E35 C35 F35 P-50 E-185-11 E-225-8 Effective Service Bulletins -2 380179 -2 -3 380208 380229 -2 ACSB-678 R.1 ACSB-707 R.1 -4 ACSB-707 R.1 Par. 5 -5 -3 ACSB-707 R.1 Par. 6 -6 ACSB-773 -7 ACSB-795 T 391330 -4 -5 -1 391583 Revisions Effecting Carburetor Parts List Number, or Issue Changes Original setting for E-165 engines reworked to 380208-2 to meet requirements of both the E-165 and E-185-1, 8 engines, Released for E-185 engines. Also used on E-165 engines. New setting, to correlate requirements for the E-165 and E-185 engines Parts list released, Setting never approved. Rework to P/L 380208. To incorporate an adjustable enrichment valve actuating screw. Improved design manual mixture control needle and new fuel strainer. Setting released for E-185-11 engines for use with Beech redesigned scoop. Incorporate a 364874 diffuser tube assembly instead of the 384776 tube assembly. Released at issue 4 for installation in Bonanza with E-225-8 engine. Regulator spacer changed to incorporate a beel ed up pressure connection boss. Use taper seat plug instead of 1/8" pipe plug Released to incorporate 6 tube discharge noaale to improve fuel distribution. - 24- Beechcraft TWIN BONANZA 25- Engine: Lycoming: GO-435-C2 Carburetor Model Engine Model Effective Service Bulletins -1 GO-480-F6 GO-480-C2C6 PS-5BD PS-5BD PS-5BD GO-435-C2 GO-480-FEGO-480-C2C6 391279 -2 88416S -3 ACSB #750 -1 Rev. 1 ACSB #773 R.1 -4 -2 M-A +305 R.1 391561 391561 20 -2 -2 -3 -3 -4 ACSB #798 -5 9 ACSB #801 M-A +381 -4 T -5 -6 -6 -7 -7 N49458 (Photo, Courtesy of Beech Aircraft Corp.) Airplane: Beechcraft - Twin Bonanza -50, B50, L-23A & L-23B - C50, L-23D <- D50 Revisions Effecting Carburetor Parts List Number, or Issue Change. Released to production 5-22-50 No units shipped as issue 1. Idle needle diaphragm changed. Mixture control lever changed from 383952 to 365125. Refer to Specification Sheet. Wide open throttle stop changed to improve fuel distribution at take-off R.P.M. To incorporate a new beefed up regulator spacer and bushing assembly. Released for installation on the GO-480-F6 Engine. Issue 3 not used. Metering jet change. Refer to Flow & Specification Sheet. Metering change. Idle valve assembly changed to improve idle adjusting characteristics. Calibration limits revised. Refer to Flow & Specification Sheet.

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