TM 55-1520-240-T
10-1.4 ENGINE FUEL SHUTOFF AND CROSSFEED VALVES
OPERATIONAL CHECK (Continued)
10-1.4
TASK
RESULT
TASK
RESULT
19. Press and release right crossfeed fuel
valve light (12).
20. Set CROSSFEED FUEL VALVES switch
(13) to OPEN.
21. Open FUEL XFEED CONT circuit breaker
(1).
22. Set handle (6) on left and right crossfeed
fuel valves (14 and 15) to CLSD.
23. Close FUEL XFEED CONT circuit
breaker (1).
24. Set CROSSFEED FUEL VALVES switch
(13) to CLOSE.
25. Open FUEL XFEED CONT circuit breaker
(1).
26. Set handle (6) on left and right crossfeed
fuel valves (14 and 15) to OPEN.
Light (12) shall momentarily come on. If it does
not, go to task 10-1,13.
Handles (6) on left crossfeed fuel valve (14) and
right crossfeed fuel valve (15) shall move to
OPEN. Left and right crossfeed fuel valve lights
(11 and 12) shall come on and remain on until
handles are at OPEN. If either crossfeed fuel valve
handle is not at OPEN or light comes on and stays
on, go to task 10-1.14. If either light did not come
on but handle is at OPEN, go to task 10-1.15. If
either light is on and handle is at OPEN, replace
faulty crossfeed fuel valve.
If handle (6) cannot be moved to CLSD, replace
left or right crossfeed fuel valve, as required.
Handles (6) on left and right crossfeed fuel valves
(14 and 15) shall move to OPEN. Left and right
crossfeed fuel valve lights (11 and 12) shall come
on and remain on until handles are at OPEN. If
not, replace faulty crossfeed fuel valve.
Handles (6) on left and right crossfeed fuel valves
(14 and 15) shall move to CLSD. Left and right
crossfeed fuel valve lights (11 and 12) shall come
on and remain on until handles are at CLSD. If
either crossfeed fuel valve handle is not at CLSD
or light comes on and stays on, go to task 10-
1.16. If either light did not come on but handles
are at CLSD, go to task 10-1.15. If light ison and
handle is at OPEN, replace faulty crossfeed fuel
valve.
27. Close FUEL XFEED CONT circuit
Handles (6) on left and right crossfeed fuel valves
breaker (1).
(14 and 15) shall move to CLSD. Left and right
crossfeed fuel valve lights (11 and 12) shall come
on and remain on until handles are at CLSD. If
either handle is not at CLSD or light comes on and
stays on, replace faulty crossfeed fuel valve.
FOLLOW-ON MAINTENANCE:
TM 55-1520-240-23:
Electrical Power Off
Disconnect Battery
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10-8
