TM 9--2350--292--20--1
0100 00--5
HOIST WINCH FAILS TO OPERATE OR DEVELOP FULL POWER --
CONTINUED
0100 00
CONTINUED FROM STEP E
1. Remove hoses from split flanges at ports HR and
HL of hoist and main winch directional control valve
assembly.
2. Install 1--inch flange plugs with o--ring in ports HR
and HL, and secure plugs with split flanges.
3. Start main engine, energize hydraulics, and set
engine speed to 1800 rpm (TM 9--2350--292--10).
4. Place hoist control lever in the raise position and
record pressures at port X1 of front pump on main
hydraulic pump assembly and MS port of the filter
valve manifold.
5. Place hoist control lever in the lower position and
record pressures again.
CONTINUED ON NEXT PAGE
I
When in raise position was pressure at PHR port
385--470 psi, and was pressure at PHL port less than
50 psi; and when in lower position, was pressure at
PHL port 385--470 psi, and was pressure at PHR port
less than 50 psi?
no
yes
1. Start Enhanced Diagnostic System program (WP
0086 00) and select corresponding symptom.
2. Start main engine, energize hydraulics, and set
engine speed to 1800 rpm (TM 9--2350--292--10).
3. Place hoist control valve lever in lower position and
record pressures at port PHL and PHR on hoist and
main winch directional control valve assembly.
4. Place hoist control valve lever in raise position and
record pressures again.
5. Shut down hydraulics and main engine
(TM 9--2350--292--10).
Go to Step H.
J
WARNING
WARNING
FORWARD
