TM 55-1520-240-23-6
7-71
TEST PUMP SHAFT SEAL (570974) (AVIM)
(Continued)
7-71
1.
Install coupling shaft (T428318) (1) in pump (2).
2.
Turn shaft (T428318) (1) by hand. Pump (2) shall
turn evenly without binding or noise.
3.
Remove coupling shaft (T428318) (1).
4.
Install pressure caps (3) on inlet port (4) and
outlet port (5) of pump (2).
5.
Fill pump (2) through port (6) with hydraulic fluid
(E199).
6.
Connect pump (2) to test stand (7).
Hydraulic fluid ejected under pressure
can cause injury to personnel.
Hydraulic fluid sprayed into the air is
a fire hazard.
7.
Apply 100 psi to case drain port (6).
8.
Check shaft seal (8) for leaks. Shaft seal leaks
shall not exceed 5 drops in 10 minutes. Other
leaks shall not be enough to form 1 drop.
9.
Release pressure to 0 psi at port (6).
10.
Disconnect pump (2).
11.
Drain hydraulic fluid (E199) from pump (2). Use
container and cloths (E120) for spilled fluid.
INSPECT
FOLLOW-ON MAINTENANCE:
None
END OF TASK
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