TM 55-1520-240-23-6
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FLUSH NO. 1 AND NO. 2 PTU AND CARGO HOOK RETURN TUBING
(Continued)
7-318
13.
Working through aft left access panel, remove
plug (6) from tube (4).
14.
Connect hose (13) to tube (4).
Do not exceed 500 psi. Otherwise,
damage to components can occur.
Keep test stand bypass valve closed.
Otherwise, contaminants could
re-enter the system.
15.
Apply hydraulic power. Set stand to 10 gpm at
500 psi. Flush system for 15 minutes. Check
for leaks.
16.
Remove hydraulic power.
17.
Disconnect hose (13) from tube (4). Use
container and cloths (E135) for spilled fluid.
Wear gloves (E186).
18.
Connect tube (4) to PTU RTN port (5).
INSPECT
19.
Working from forward right work platform, remove
plug (9) from tee (8).
20.
Connect hose (13) to tee (8).
Do not exceed 500 psi. Otherwise,
damage to components can occur.
Keep test stand bypass valve closed.
Otherwise, contaminants could
re-enter the system.
21.
Apply hydraulic power. Set stand to 10 gpm at
500 psi. Flush system for 15 minutes. Check
for leaks.
22.
Remove hydraulic power.
23.
Disconnect hose (13) from tee (8). Use container
and cloths (E135) for spilled fluid.
24.
Connect tube (7) to tee (8).
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