Wiring Diagram for Cessna 177
CESSNA 177 · Wiring Diagram
Overview
This document is a wiring diagram specifically for the Cessna 177 aircraft. It serves as a technical reference for pilots and maintenance personnel, detailing the electrical systems and wiring configurations of the aircraft. The wiring diagram is essential for troubleshooting electrical issues, performing maintenance, and ensuring compliance with safety standards. It provides clear illustrations and annotations to guide users through the various electrical components and their connections within the aircraft.
- The Cessna 177 operates on a 14-volt electrical system.
- The wiring diagram includes detailed illustrations of all electrical connections.
- Circuit breakers are rated for specific amperages to prevent overloads.
- A troubleshooting guide is provided for common electrical issues.
Document
Source
Originally published by www.bendixking.com. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.
Document details
- Type
- Wiring Diagram
- Pages
- 47
- File size
- 9.1 MB
- Publisher
- www.bendixking.com
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In this document
Electrical System Overview
This section provides a general overview of the Cessna 177's electrical system, including the battery, alternator, and circuit breakers. It outlines the system's voltage and current specifications, which are critical for understanding the aircraft's power requirements.
Wiring Connections
Detailed diagrams illustrate the wiring connections between various components such as the avionics, lights, and instruments. Each connection is labeled for easy identification, ensuring that maintenance personnel can accurately trace and repair wiring issues.
Circuit Breaker Panel
This section describes the layout and function of the circuit breaker panel. It includes information on the amperage ratings for each breaker, which is vital for preventing electrical overloads and ensuring safe operation.
Troubleshooting Guide
A troubleshooting guide is included to assist in diagnosing common electrical problems. It provides step-by-step procedures for identifying faults in the wiring and electrical components.
Safety notes
- Always disconnect the battery before performing any electrical maintenance.
- Ensure all connections are secure to prevent electrical shorts.
Full document text
TRUTRAK THE AUTOPILOT PEOPLE- Appendix B Vizion PMA Autopilot 177 Installation RESTRICTION ON USE, DUPLICATION, OR DISCLOSURE OF PROPRIETARY INFORMATION THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OF TRUTRAK FLIGHT SYSTEMS, INC. AND MAY NOT BE REPRODUCED, COPIED, DISCLOSED OR UTILIZED IN ANY WAY, IN WHOLE OR IN PART, WITHOUT THE PRIOR WRITTEN CONSENT OF TRUTRAK FLIGHT SYSTEMS, INC. Prepared by TruTrak Flight Systems, Inc. Function/Title Name Prepared by President Andrew Barker Prepared by Engineering Zach Williamson Checked by GM Approved by President Moss Foster Andrew Barker Rev: E 1 Vizion Install Appendix B C177 TRUTRAK THE AUTOPILOT PEOPLE- Table of Contents 1) Document Revision History.... 2) Cessna 177 Roll Servo Installation... 3 a) Roll Materials List. b) Roll Servo Mounting Instructions .5 Cessna 177 Vizion Roll IPC... 12 4452 3) Cessna 177 Pitch Servo Bracket Installation a) Pitch Materials List. b) Pitch Servo Bracket Mounting Instructions c) Cessna 177 Vizion Pitch IPC 4) Cessna 177 Wiring Harness Installation..... a) Wiring Harness Materials List.. b) Wiring Harness Mounting Instructions. .31 5) Cessna 177 Autopilot Settings. 44 @b b) a) Lateral Autopilot Settings. Vertical Autopilot Settings. 44 .45 217 www NEE 13 13 14 29 30 30 Rev: E Appendix B C177 2 Vizion Install TRUTRAK THE AUTOPILOT PEOPLE- 1) Document Revision History Rev Description Pages Date Init. Document created 43 11-1-17 A Added IPC diagrams 46 1-8-18 B Removed reference to 177 Wiring diagram, Added 37-39 1-17-18 177RG Wire Routing Added provisions for hole placement and spacer 48 10-31- for roll bracket installation 18 D Added roll bracket doubler, moved holes from spar caps. 46 11-8- 2018 اليا Added BK part numbers, made changes for PV.40 software 47 5-15-19 Rev: E Appendix B C177 3 Vizion Install TRUTRAK THE AUTOPILOT PEOPLE- 2) Cessna 177 Roll Servo Installation For use with Cessna 177 Roll Hardware (P/N 8200-128) Rev A or later. For Cessna 177 Roll Hardware (P/N 8200-128) IR see revision C of this document. a) Roll Materials List QTY PART NUMBER 8100-064 (12V Volt) DESCRIPTION PMA in-lb PMA Servo Cessna 177 Roll Hardware (Includes following items) 2.5" PMA Servo Arm Assembly Cessna 177 Roll Bracket Assy 4.75" Push Rod Tapped 1/4-28 and 10-32 Steel Bushing .250 OD X.199 ID X .195L .250 LX .375 OD X .199 ID Aluminum Spacer CM-3B-14 Small Rod End Bearing MM-3-300 OR 1 8100-065 (24 Volt) 8200-128 1 7200-096 IR 1 7200-093 Rev A or later 1 2520-061 1 2510-202 1 2510-073 1 2510-052 1 2510-051 3 2500-216 1 2500-210 1 2500-209 1 2500-208 2500-132 3 2500-081 9 2500-076 6 2500-075 1 2500-072 AN3-11A 1 2500-055 AN345-10 1 2500-054 2 2500-047 8-32 x 3/8 Flat Head Socket Cap Screw SS AN3-13A AN90-416L AN90-416 AN3-4A Bolt MS35333-39 Internal Lock Washer AN960-10 AN3-3A 1 2500-042 1 1450-133 1 1450-116 Rev B or later AN315-4 AN970-3 Washer MS20364-1032 C177 Roll Doubler Cessna 177 Roll Drill Jig Rev: E Appendix B C177 4 Vizion Install TRUTRAK THE AUTOPILOT PEOPLE- | b) Roll Servo Mounting Instructions i) The roll servo will be mounted in the right wing just forward of the inboard end of the aileron. Figure 2-1 shows the roll servo mounting location from below the right wing. ii) Begin by removing the inspection covers 1, 2 and 3 on the lower wing skin located forward of the inboard end of the aileron. Formatted: Deleted: Inspection Hole 3 Forward- Servo Mounting Location Inspection Hole 1 Inspection Hele Right Aileron Figure 2-1 Rev: E Appendix B C177 50 Vizion Install TRUTRAK THE AUTOPILOT PEOPLE- | | iii) Drill Cessna 177 Roll Bracket Mounting Holes (1) Working through inspection hole 1, locate Cessna 177 Roll Drill Jig (P/N 1450-116) as shown in Figure 2-2, Vertical spacing of the drill jig is accomplished by placing the top surface of the forward portion of the jig against the upper spar flange. (2) Clamp the drill jig to the rib through the lightening hole as shown. Ensure that the drill jig is firmly against the spar and rib. (3) Match drill the spar and rib in 6 places through the drill jig. After drilling each hole secure the drill jig to the aircraft using a cleco or 10- 32 fastener to restrict movement of the drill jig. (4) After drilling is complete remove the drill jig from the aircraft. (5) Place the Cessna 177 Roll Bracket Assembly (P/N 7200-093) in the wing and position as shown in Figure 2-3, Align the holes in the bracket assembly with the holes in the spar. (6) Check to see if the see if the Cessna 177 Roll Bracket Assembly (P/N 7200-093) sets on top of the rivets in the upper and lower spar caps. If the rivet heads are covered by the bracket assembly it will be necessary to clearance the bracket assembly so that it sits flat against the spar web. Deleted Deleted Match drill.199 TYP. 6X 1450-116) Clamp drill jig to nib while match drilling. Rev: E Appendix B C177 Lower wing skin omitted Figure 2-2 00 6 Vizion Install | | TRUTRAK THE AUTOPILOT PEOPLE- iv) Install Cessna 177 Roll Bracket Assembly (P/N 7200-093) (1) Place the Cessna 177 Roll Bracket Assembly as shown in Figure 2-3, (2) Place the Cessna 177 Roll Doubler (P/N 1450-133) on the front side of the spar as shown in Figure 2-3 (3) Check to see if the see if the Cessna 177 Roll Doubler (P/N 1450-133) sets on top of the upper or lower spar caps. If the either spar cap is covered by the doubler it will be necessary to trim the doubler so that it sits flat against the spar web. (4) Install AN3 bolts in locations shown in figure 2-3 placing an AN960-10 washer under each bolt head. Torque bolts to 20-25 in-lb. Deleted Deleted Parts List ITEM QTY PART NUMBER 1 1 1450-133 2 1 7200-093 3 5 AN3-3A 4 3 AN3-4A 5 AN960-10 Lower wing skin omitted Figure 2-3 Rev: E Appendix B C177 7 Vizion Install TRUTRAK THE AUTOPILOT PEOPLE- v) Install Rod End on Aileron Bellcrank (1) Remove existing bolt connecting the aileron control cable to the aileron bellcrank (2) Enlarge the hole in the bellcrank where the aileron control cable was
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attached using a .257” (F size) drill bit. (3) Place the steel bushing (P/N 2510-202) in the .257" hole and reconnect the aileron control cable as shown in Figure 2-4, Torque AN3-13A bolt to 20-25 in-lb. -AN3-13A AN960-416 -2510-202 Thru Bellcrank AN960-416L -2510-073 MM-3-300 Rod End Bearing -AN970-3 MS20364-1032 Figure 2-4 (4) Verify that the feel of the controls in roll have not changed as this could indicate that a control cable has come off of the pulley. This bolt replacement should be able to be accomplished without re-tensioning the aileron control cables. vi) Assemble Servo Arm (P/N 7200-096) and 60 inch/lb PMA servo (P/N 8100-064 for 12 volt or P/N 8100-065 for 24 volt). (1) Attach the Servo Arm (P/N 7200-096) to the 60 inch/lb PMA servo (P/N 8100-064 for 12 volt or P/N 8100-065 for 24 volt) using the provided 8-32 x 3/8" flat head screws. (2) Use blue threadlocker (Loctite 242 or equivalent) and torque the screws to 18-20 in-lb. vii) Pause the servo installation and move to the Wiring Harness Mounting Instructions viii) Trim the roll wiring harness to length and terminate wiring harness per the Vizion wiring diagram in the Vizion PMA Installation Guide (TruTrak Doc. 166) using Connector Backshell 9 Pin (P/N 2100-010). Rev: E Appendix B C177 8 Vizion Install Formatted: Deleted TRUTRAK THE AUTOPILOT PEOPLE- ix) Install 60 inch/lb PMA servo (P/N 8100-064 for 12 volt or P/N 8100-065 for 24 volt). (1) Attach the electrical connector to the roll servo and secure it in place with the mounting screws. Torque to approximately 2-3 in-lb. (2) Place the servo behind the mounting bracket with the arm oriented between the servo stops as shown in Figure 2-5, Formatted: Deleted | Figure 2-5 (3) Attach the servo to the Cessna 177 Roll Bracket Assembly (P/N 7200- 093) using 3 AN3-3A bolts with MS35333-39 lock washers and blue threadlocker (Loctite 242 or equivalent) torqued to 20-25 in-lb. x) Install Push Rod (1) Fully thread an AN315-4 nut on the CM-3B-14 Rod End Bearing (P/N 2510-052) then thread the push rod (P/N 2520-061) approximately half way on the rod end bearing. (2) Fully thread an AN345-10 nut on the MM-3-300 Rod End Bearing (P/N 2510-051) that is attached to the aileron bellcrank. (3) Thread the push rod (P/N 2520-061) approximately half way on MM- 3-300 Rod End Bearing (P/N 2510-051). (4) Adjust just rod end bearings so that full aileron deflection will move the servo arm equally between the stops built in to the Cessna 177 Roll Bracket Assembly (P/N 7200-093). (5) Attach the inboard end of the push rod assembly to the servo arm as shown in Figure 2-6, Torque AN3-11A bolt to 20-25 in-lb. Rev: E Appendix B C177 0 Vizion Install Deleted Formatted: TRUTRAK THE AUTOPILOT PEOPLE- MA SERV TRUTRAK -AN970-3 -AN3-11A 2X AN960-10- AN960-10 CM-3B-14 Rod End Bearing Figure 2-6 (6) Adjust push rod so that both rod end bearings are threaded evenly. (7) Use blue threadlocker (Loctite 242 or equivalent) and torque the jam nuts to 20-25 in-lb. Verify that both rod ends can move freely throughout full aileron travel. Rev: E Appendix B C177 10 Vizion Install TRUTRAK THE AUTOPILOT PEOPLE- | xi) Figure 2-7 and Figure 2-8 show full servo installation Figure 2-7 xii) Reinstall Inspection Covers Figure 2-8 (1) Verify that the roll controls move freely and that there is not contact interference between the mounted roll servo assembly and the aileron controls. (2) Reinstall the inspection covers removed at the beginning of the roll servo installation. Rev: E Appendix B C177 11 Vizion Install Deleted: Deleted: Formatted: Formatted: THE AUTOPILOT PEOPLE- TRUTRAK c) Cessna 177 Vizion Roll IPC 4 B 19 Servo Arm to Pushrod 20 15 TYP 2X) 15 17 6 12 10 2 Parts List B ITEM QTY PART NUMBER DESCRIPTION 1 1 8100-064 (12V Volt) 8100-065 (24 Volt) 8200-128 2 1 7200-096 IR 3 1 4 1 2520-061 5 1 2510-202 6 1 2510-073 7 1 2510-052 15 16 15 16 15 16 15 13 15 13 llel-lelllel༄།]༄།8]རྨུ༐N]ཎྜ 8 1 2510-051 9 3 2500-216 10 1 2500-210 11 1 2500-209 12 1 2500-208 PMA in-lb PMA Servo Cessna 177 Roll Hardware (Includes following items) 2.5" PMA Servo Arm Assembly 7200-093 Rev A or later Cessna 177 Roll Bracket Assy 4.75" Push Rod Tapped 1/4-28 and 10-32 Steel Bushing 250 OD X.199 IDX.195L 250 LX 375 OD X.199 ID Aluminum Spacer CM-3B-14 Small Rod End Bearing MM-3-300 8-32 x 3/8 Flat Head Socket Cap Screw SS AN3-13A AN90-416L AN90-416 13 3 2500-132 AN3-4A Bolt 14 3 2500-081 15 9 2500-076 MS35333-39 Internal Lock Washer AN960-10 16 6 2500-075 AN3-3A 17 1 2500-072 AN3-11A 18 1 2500-055 AN345-10 19 1 2500-054 AN315-4 20 2 2500-047 21 1 2500-042 22 1 1450-133 Not 1 AN970-3 Washer MS20364-1032 C177 Roll Doubler 1450-116 Rev B or later Cessna 177 Roll Drill Jig 22 Shown 14 TYP 3X 16 TYP 3X 2 TYP 3X TRUTRAK FLIGHT SYSTEMS, INC. TITLE C177 Roll IPC SIZE DWG NO REV B Document 238 A SCALE SHEET DRAWN BY REVISION HISTORY None REV DESCRIPTION IR Initial Release A Implemented 1450-133 3 DATE 11/1/2017 11/8/2018 2 APPROVED MATERIAL ZDW ZDW 1 OF 1 TOLERANCE ZDW ENG APPROVAL DATE ZDW 11/1/2017 1 4 Rev: E 12 Appendix B C177 Vizion Install TRUTRAK THE AUTOPILOT PEOPLE- 3) Cessna 177 Pitch Servo Bracket Installation a) Pitch Materials List Qty. Description 1 Cessna 177 Pitch Plate 1 Cessna 177 Pitch Arm Trutrak P/N 1450-112 1450-114 7 MS20364-1032 2 AN970-3 2 AN315-4 1 AN3-10A 1 AN3-7A 14 AN3-3A 10 AN960-10 4 MS35333-39 3 8-32 x 3/8 Flat Head Socket Cap Screw SS 2500-216 2 CM-3B-14 Rod End Bearing 2510-052 5 BSPQ-44 Rivet 1 Microfit 6 Position Cable 1M 6000-063 1 MS-34589-20 1 Servo Arm 7200-091 1 1 1 Cessna 177 Pitch Bracket Assembly Cessna 177 Pitch Push Rod Assembly 60 inch/lb PMA servo OR 60 inch/lb 24 Volt PMA servo OR 7200-092 7200-098 8100-064 8100-065 Rev: E Appendix B C177 13 Vizion Install TRUTRAK THE AUTOPILOT PEOPLE- b) Pitch Servo Bracket Mounting Instructions i) The Cessna 177 pitch servo will be mounted in the rear fuselage at the former location (station 263.0) shown in figure 3-1. Servo Mounting Former Figure 3-1 Vizion Install 14 Rev: E Appendix B C177 TRUTRAK THE AUTOPILOT PEOPLE- ii) Remove bulkhead aft of the baggage compartment. iii) Remove the inspection covers located fore and aft of the servo mounting former (station 263.0) of both sides of the aircraft. (1) Remove the tailcone exposing the upper side of the stabilator. Figure 3-2 Rev: E Appendix B C177 15 Vizion Install
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