TM 1-1520-238-23
1-114.6
Change 5
1.35.
HYDRAULIC SYSTEM BLEED – continued
ar. Repeat steps ab.(1) and (2) to articulate pyons
and flight controls 10 complete cycles as re-
quired until AGPU sight gauge is clear of
bubbles.
as. Close access door L115 (para 2.2).
at. Adjust AGPU output pressure to 0 psi
(TM 55-1730-229-12).
au. Bleed primary hydraulic reservoir.
(1) Place pail under primary hydraulic overflow
drain (48) to catch fluid.
(2) Disconnect return “Y” hose (2) from primary
return coupling (4). Install cap (6).
(3) Slowly increase AGPU output pressure to
250 psi (TM 55-1730-229-12). Do not ex-
ceed 400 psi.
(4) Hold pressure until overflow drain fluid is free
of air bubbles.
(5) Reduce AGPU output pressure to 0 psi
(TM 55-1730-229-12).
(6) Disconnect pressure “Y” hose (8) from prima-
ry pressure coupling (10). Install cap (12).
av. Bleed utility hydraulic reservoir.
(1) Place utility pail under utility hydraulic over-
flow (49) to catch fluid.
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48
M04-1611-25A
M04-1611-12A
10
4
12
8
2
6
49
M04-1611-11A
