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TM 9-2835-255-34
CHAPTER 6
REAR ENGINE MODULE MAINTENANCE
CHAPTER INDEX
PROCEDURE
PAGE
Splined Shaft Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6-1
Speedometer Adapter Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6-3
Speed Wiring Harness Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6-4
Air Tube Assembly (Reduction Gearbox - Short) Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6-6
Tube Assembly (Reduction Gearbox Feed) Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6-7
Tube Assembly (Reduction Gearbox Scavenge - Rear) Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6-8
Tube Assembly and Internal Pressure Special Seals (No. 5 and 6 Bearing Oil Scavenge)Replacement . . . . . . . . . . . 6-10
Tube Assembly and Internal Pressure Special Seals and Packing (No. 5 and 6 Bearing Oil Feed) Replacement . . . . 6-12
Cooling Tube Assembly (No. 5 and 6 Bearing) Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6-14
Reduction Gearbox Lifting Sling Installation and Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6-16
Reduction Gearbox Assembly Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6-17
Reduction Gearbox Assembly Removal from and Installation in Shipping Container . . . . . . . . . . . . . . . . . . . . . . . . . 6-21
No. 7 Bearing Seal Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6-22.1
Adapter and Shaft Assembly Seal Rings Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6-22.5
Engine/Rear Module Lifting Sling Installation on and Removal from Rear Engine Subassembly . . . . . . . . . . . . . . . 6-23
Rear Engine Subassembly Removal from and Installation in Shipping Container . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-24
Rear Engine Subassembly Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6-28
No. 10 Bearing Seal Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6-31
Seal Rings and Expander Springs Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6-33
Thermocouple Wiring Harness Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6-34
Adapter and Shaft Assembly Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6-37
No. 5 Seal and Diaphragm Assembly Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6-45
No. 10 Bearing Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6-52
Gas Turbine Power Unit Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6-62
Low Pressure Turbine Nozzle Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6-92
SPLINED SHAFT REPLACEMENT (Sheet 1 of 2)
TOOLS:
General mechanic's tool kit: automotive (SC5180-90-N26)
Extension, 3/8-inch drive, 6-inch (Item 8, Appendix D)
Ratchet handle, 3/8-inch drive (Item 9, Appendix D)
Socket, 3/8-inch drive, 7/16-inch (Item 28, Appendix D)
Torque wrench, 0-150 in-lb (Item 27, Appendix D)
SUPPLIES:
Antiseize compound (Item 2, Appendix B)
Preformed packing (Item 21, Appendix E)
Preformed packing (item 22, Appendix E)
Self-locking nut (Item 20, Appendix E)
Shortening compound (Item 20. Appendix B)
PERSONNEL: Two
EQUIPMENT CONDITION:
Engine disconnected from transmission (TM 34-1)
Go on to Sheet 2
6-1
Change 6

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