TM 9-2350-287-20-1
2-19. TROUBLESHOOTING CHART (continued).
I
u. AUXILIARY POWER UNIT (continued).
(1) ENGINE CRANKS BUT FAILS TO START
(continued).
CONTINUED FROM J
Replace circuit breaker (para 7-11).
Verify problem is solved.
Notify Direct Support maintenance.
K.
CONTINUED FROM STEP G
1. Connect lead 10G to Circuit Breaker No. 8.
input of Circuit Breaker panel no. 1.
2. Check APU control box FUEL SHUT-OFF
switch circuit for continuity.
3. Place multimeter red probe on pin N and
black probe on pin F.
4. Turn FUEL SHUT-OFF switch ON (refer to
TM 9-2350-287-10).
5. Check for continuity.
6. Turn FUEL SHUT-OFF switch OFF (refer to
TM 9-2350-287-10).
Is continuity indicated?
CONTINUED TO STEP M
L.
1. Remove NBC air purifier (para 22-2).
2. Remove four screws and Iockwashers, ac-
cess panel, and bracket. Discard Iockwashers.
3. Disconnect harness 12330248.
4. Disconnect two leads from FUEL SHUT-
OFF switch.
Continued on next page
2-298