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TM 9-2350-287-20-2
CHAPTER 18
AUXILIARY POWER UNIT GENERATOR AND ENGINE,
AND CONTROLS MAINTENANCE
Paragraph
Page
Number
Paragraph Title
Number
18-1
General ............................................................................................................................................ 18-1
18-2
APU Replacement ............................................................................................................................ 18-2
18-3
APU Support Mounts Replacement .................................................................................................. 18-8
18-4
APU Engine Support Stand and Support Assembly Replacement ..................................................... 18-9
18-5
APU Hour Meter Replacement ......................................................................................................... 18-12
18-6
APU01 Oil Drain Tubing and Fittings and Drain Valve Catch Assembly Replacement ....................... 18-13
18-7
APU Oil Fill Tube and Breather Hose Replacement .......................................................................... 18-18
18-8
APU Oil Filter Replacement .............................................................................................................. 18-20
18-9
APU Oil Pressure Transmitter Replacement ..................................................................................... 18-21
18-10
APU Air Cleaner, Inlet and Outlet Hoses, and Tubes Replacement ................................................... 18-23
18-11
APU Primary and Secondary Fuel Filters Replacement .................................................................... 18-25
18-12
APU Exhaust Muffler, Pipes, and Shield Replacement ...................................................................... 18-32
18-13
APU Cooling Air Duct Replacement .................................................................................................. 18-35
18-14
APU Panels Replacement ................................................................................................................ 18-36
18-15
APU Panel Supports Replacement ................................................................................................... 18-40
18-16
APU Generator Replacement ........................................................................................................... 18-42
18-17
APU Plenum Replacement ............................................................................................................... 18-44
18-18
APU Starter Relay Replacement ....................................................................................................... 18-47
18-19
APU Hydraulic Pressure Switch Assembly Replacement .................................................................. 18-48
18-20
APU Diode Replacement .................................................................................................................. 18-50
18-21
APU Wiring Harness (12329640) Replacement ................................................................................ 18-52
18-22
APU Wiring Harness (12329650) Replacement ................................................................................ 18-57
18-23
APU Cable Assembly (11672191) Replacement ............................................................................... 18-60
18-24
APU Cable Assembly (11671371) Replacement ............................................................................... 18-62
18-25
APU Ground Cables (11671369-1) Replacement .............................................................................. 18-63
18-26
APU Cable Assembly (11671380-1) Replacement ............................................................................ 18-65
18-27
APU Cable Assembly (11671380-2) Replacement ............................................................................ 18-67
18-28
APU Wiring Harness (12329660), Fuel Solenoid to Hour Meter Replacement ................................... 18-70
18-29
APU Cable (12329662) Replacement ............................................................................................... 18-74
18-1. GENERAL.
This chapter illustrates and describes maintenance procedures for the auxiliary power unit (APU).
Change 1 18-1
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