TM 55-1520-240-23-6
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TEST APU MOTOR PUMP (68WK02005-4) (AVIM)
(Continued)
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1.
Install five pressure caps (1, 2, 3, 4, and 5) in
seal drain port (6), main engine port (7), signal
line port (8), high pressure port (9), and low
pressure port (10) of motor pump (11).
2.
Connect test stand pressure hose (12) to case
drain port (13).
3.
Close valve (14).
4.
Apply 300 psi pressure to port (13). Adjust
valve (15) for 1300 psi on gage (16). Maintain
pressure for 5 minutes.
5.
Check for leaks at seal plate (17). There shall
be no leaks.
6.
Close valve (15). Open valve (14).
7.
Disconnect pressure hose (12) from port (13).
8.
Remove five caps (1, 2, 3, 4, and 5) from ports
(6, 7, 8, 9, and 10).
9.
Turn shaft (19) by hand. Shaft shall turn evenly
without binding or noise.
INSPECT
FOLLOW-ON MAINTENANCE:
None
END OF TASK
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