Tips from Comanche Flyer magazines Feb 1973 – Sep 2012 CHAPTER SEVEN LANDING GEAR / BRAKES (WHEELS, TIRES, STRUTS, BRAKING MECHANISM) Table of Contents Gear Warning Horn ............................................................................................................................................. 4 Gear Failure, Missing Cotter Pin ......................................................................................................................... 4 Gear Maintenance............................................................................................................................................... 4 AD 77−13−21, Prevent Gear Collapse................................................................................................................ 4 Gear Failure, Misaligned Aligner......................................................................................................................... 5 Brakes ................................................................................................................................................................. 5 Jammed Gear Retraction .................................................................................................................................... 6 Single Fork Modification ...................................................................................................................................... 6 Popped Gear Circuit Breakers ............................................................................................................................ 6 Gear Down Lights................................................................................................................................................ 7 Gear Down Light ................................................................................................................................................. 7 Pumped up Struts................................................................................................................................................ 8 Gear Circuit Breaker............................................................................................................................................ 8 Gear Failure, Gear Collapse ............................................................................................................................... 8 Hand Brake Support Bracket............................................................................................................................... 8 Gear Down Light ................................................................................................................................................. 9 Slow Gear Operations ......................................................................................................................................... 9 Sync the Gear.................................................................................................................................................... 10 Nose Gear Door Incorrectly Installed ................................................................................................................ 10 Toe Brakes ........................................................................................................................................................ 11 Gear Transmission Loose Motor....................................................................................................................... 11 Observations: .................................................................................................................................................... 12 Gear Operations................................................................................................................................................ 12 Jammed Gear Extension................................................................................................................................... 12 Gear Transmission Assembly ........................................................................................................................... 13 Brake Cylinder Maintenance ............................................................................................................................. 13 Nose Gear Support Corrosion........................................................................................................................... 13 Gear Circuit Breaker.......................................................................................................................................... 14 Twin Gear Microswitch Wiring........................................................................................................................... 14 Gear Bungee Arms............................................................................................................................................ 15 Gear Transmission ............................................................................................................................................ 17 AD 7−13−21, Prevent Gear Collapse................................................................................................................ 17 Gear Warning Horn Adjustment ........................................................................................................................ 19 Copyright © 2012, International Comanche Society, Inc. All rights reserved. Low Battery Effect on Landing Gear ................................................................................................................. 19 Main Gear Bolt Freeze−Up ............................................................................................................................... 19 Low Battery Effect on Landing Gear ................................................................................................................. 20 Gear Maintenance............................................................................................................................................. 20 Gear Transmission ............................................................................................................................................ 20 Nose Gear Door Worn Hinges .......................................................................................................................... 21 Jammed Gear Extension................................................................................................................................... 21 Gear Failure, Bent Extension / Retraction Rod ................................................................................................. 21 Gear Failure, Missing Spring and Cotter Pin..................................................................................................... 22 Nose Gear Worn Bell Crank and Bushings....................................................................................................... 24 Gear Bungee Arms............................................................................................................................................ 26 Gear Failure, Jammed Wheel Well Liner .......................................................................................................... 28 Gear Transmission ............................................................................................................................................ 28 Strut Maintenance ............................................................................................................................................. 30 Bungee Cord Tool ............................................................................................................................................. 31 Pumped up Struts.............................................................................................................................................. 32 Gear Down Light ............................................................................................................................................... 32 Twin Gear Side Link Brace................................................................................................................................33 Gear Position Indications .................................................................................................................................. 33 Gear Transmission ............................................................................................................................................ 33 AD 77−13−21, Prevent Gear Collapse.............................................................................................................. 34 Gear Transmission ............................................................................................................................................ 34 Gear Warning Horn System .............................................................................................................................. 35 Gear Warning Horn Modification....................................................................................................................... 35 Tire Tubes ......................................................................................................................................................... 36 Gear Transmission Motor.................................................................................................................................. 36 Gear Bungee Arms...........................................................................................................................................