TM 55-1520-240-23-6
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BLEED UTILITY HYDRAULIC RESERVOIR/COOLER, APU PUMP/ MOTOR AND UTILITY
PUMP SYSTEM
(Continued)
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9.
Loosen nut (15) at SIG port (16) of APU
motor/pump (17). Allow fluid to flow until air free.
Tighten nut. Use cloths (E120) for spilled fluid.
10.
Repeat steps 1 and 2.
11.
Loosen nut (18) at LP port (19) of motor/pump
(17). Allow fluid to flow until air free. Tighten nut.
Use cloths (E120) for spilled fluid.
12.
Repeat steps 1 and 2.
13.
Loosen nut (20) at IN port (21) of utility pump
(22). Allow fluid to flow until air free. Tighten nut.
Use cloths (E120) for spilled fluid.
14.
Repeat steps 1 and 2.
15.
Loosen nut (23) of RETURN tube (24) to APU
start accumulator manifold (25). Allow fluid to
flow until air free. Tighten nut. Use cloths (E120)
for spilled fluid.
16.
Repeat steps 1 and 2.
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