TM 9--2350--292--20--1
0091 00--7
MAIN WINCH FAILS TO OPERATE OR FAILS TO DEVELOP FULL POWER --
CONTINUED
0091 00
CONTINUED FROM STEP B
CONTINUED ON NEXT PAGE
1. Start Enhanced Diagnostic Program
(WP 0086 00) and select corresponding
symptom.
2. Start main engine, energize hydraulics, set
engine speed to 1800 rpm
(TM 9--2350--292--10). Payout main winch
cable and record pressure at hoist and main
winch directional control valve assembly ports
PMI and PMO.
3. Inhaul main winch cable and record pressure at
both ports PMI and PMO again.
4. Shut down hydraulics and main engine
(TM 9--2350--292--10).
In payout position is PMO pressure 385--470 psi and
PMI pressure less than 50 psi and in inhaul position, is
PMI pressure 385--470 psi and PMO pressure less than
50 psi?
Go to Step K.
no
yes
I
