TM 9-2350-256-20-1
0031 00
CORRECTIVE ACTION Continued
4.
Test for hydraulic motor failure. Remove hose No. 48 from rear of hydraulic motor (see WP 0416 00).
A large volume of oil discharged from port when hoist winch control valve is engaged indicates a faulty
motor. If a faulty hydraulic motor exists, notify Direct Support Maintenance. If hydraulic motor is not
faulty, go to step 5.
5.
Inspect manual control and linkage (see WP 0411 00) for disconnected, damaged, or missing parts.
Connect linkage and replace or repair missing or damaged parts (see WP 0411 00). If no control and
linkage defects exist, go to step 6.
6.
Ensure hoist winch cable is not damaged and is properly attached to drum. Replace hoist winch cable
if required (see WP 0409 00). If hoist winch cable is not damaged and is properly attached to drum, go
to step 7.
WARNING
Do not attempt to loosen or tighten hydraulic fittings or lines when system is pressurized. Severe injury
or death to personnel may result.
7.
Inspect hydraulic lines and connections for leaks. Replace leaking hydraulic lines and tighten leaking
connections (see WP 0416 00). If leaks persist, notify Direct Support Maintenance. If no leaks exist go
to step 8.
NOTE
Ensure hydraulic system is at operating temperature.
8.
If hoist winch creeps or fails to hold load, adjust brake. Open door of U-35 winch center right floor
plate (see WP 0289 00). Loosen locknut (see WP 0410 00) and tighten hoist winch adjusting screw
clockwise as far as it will go. Back off adjusting screw one full turn. Hold adjusting screw in position
and tighten locknut. If brake fails to hold load, go to step 9. If brake holds load but continues to creep,
notify Direct Support Maintenance.
9.
Remove hydraulic brake cylinder hose No. 28 and inspect for restriction (see WP 0416 00). Replace
restricted or damaged hose (see WP 0416 00). If no hose restriction or damage exists and brake still
fails to hold load, go to step 10.
10. If quick disconnect between hydraulic line, hose No. 22, and hydraulic line hose No. 22A is dirty or
damaged, clean or replace quick disconnect as necessary (see WP 0416 00). If no quick disconnect
damage is present and hoist winch still creeps or fails to hold load, notify Direct Support Maintenance.
END OF WORK PACKAGE
0031 00-2
