TM 9--2350--292--20--1
0091 00--8
MAIN WINCH FAILS TO OPERATE OR FAILS TO DEVELOP FULL POWER --
CONTINUED
0091 00
CONTINUED FROM STEP I
1. Disconnect quick--disconnects from main winch
manifold.
2. Remove plug from hoist and main winch
directional control valve assembly port LS and
remove hose and fitting from port LS1.
3. Install hose and fitting into port LS and plug
port LS1.
4. Start main engine, energize hydraulics, and set
engine speed to 1800 rpm
(TM 9--2350--292--10).
5. Payout main winch and record pressures at
filter valve manifold port MS and front hydraulic
pump port XI.
6. Inhaul main winch and record both pressures
again.
7. Shut down hydraulics and main engine
(TM 9--2350--292--10).
In both payout and inhaul are all pressure readings
4100--4300 psi?
yes
no
Replace hoist and main
winch directional control
valve assembly (WP
0556 00). Verify fault is
corrected.
Notify Direct Support
Maintenance.
J
CONTINUED ON NEXT PAGE
WARNING
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