CHAPTER 13: MAINTENANCE OF APU
TM 9-2350-256-20
13-1 REPLACE APU PRESSURE SWITCH ASSEMBLY--Continued
1 Disconnect hose (1).
2 Disconnect electrical connection (2).
3 Remove pressure switch assembly (3) by removing
four screws (4) and four lockwashers (5).
b. INSTALLATION
1 Install pressure switch assembly (3) with four
screws (4) and four new lockwashers (5).
2 Connect electrical connection (2).
3 Connect hose (1).
NOTE
Follow-on maintenance: Install center front air
inlet grilles (see
paragraph 9-57)
13-2 REPLACE/SERVICE APU ENGINE AIR CLEANER, FILTER, AND AIR INTAKE
TUBES
THIS TASK COVERS
a. Removal
b. Servicing
c. Installation
INITIAL SET-UP
Tools:
Parts:
Reference
Tool kit, general mechanic's
Gasket (Appendix G, item 64)
TM 9-2350-256-10
(Appendix C, item 53)
Lockwashers (4) (Appendix G,
item 132)
a. REMOVAL
1 Remove air intake tube (1) by loosening two clamps (2).
2 Remove APU air cleaner (3) and gasket (4) by removing four screws (5) and four lockwashers (6).
3 Remove APU access cover (see paragraph 9-49).
13-2
