TM 9-2350-256-10
2-18. EMERGENCY PROCEDURES-Continued.
APU. If main engine fails, APU can be used to provide hydraulic power to following components:
(1)
Main Winch. Pay out cable to loosen and/or inhaul cable under no-load conditions.
(2)
Hoist Winch.
(a)
Raise cable under no-load conditions. If main engine fails during a hoisting operation and a load is
hanging from boom, APU can be used to lower load.
(b)
Start auxiliary hydraulic system and move HOIST lever SLOWLY to LOWER until load rests on
ground.
CAUTION
This is not a normal function of auxiliary hydraulic system.
(3)
Spade. Raise or lower under no-load conditions. Spade can be raised from stabilizing position by
releasing vehicle brakes while raising it. If spade is deeply implanted, vehicle must be towed back while
raising spade.
(4)
Boom. Raise or lower under a no-load condition.
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