TM 5-3810-305-23
0019
SYMPTOM
WINCH WILL NOT LOWER LOAD OR NOT LOWER LOAD SMOOTHLY
MALFUNCTION
Plugged or Loose Pilot Orifice. Pilot Orifice is a Small Pipe Plug with a Hole Drilled Through It, Located
Behind Pilot Port Fitting on Brake Valve. If It Becomes Plugged, It Will Prevent Pilot Pressure from Opening
Brake Valve. If It Becomes Loose, It Will Allow an Unregulated Amount of Oil in to Operate Brake Valve,
Which Causes Erratic Brake Valve Operation.
CORRECTIVE ACTION
Remove pilot hose and fitting brake valve, then use a 5/32 inch allen wrench to remove pilot orifice.
Diameter of orifice is approximately 0.020 inch (0.51 mm). Clean and install pilot orifice tightly in
brake valve (WP 0127).
MALFUNCTION
Brake Cylinder Seal Leaking.
CORRECTIVE ACTION
1.
Repair winch (WP 0125).
2.
Replace winch (WP 0125).
MALFUNCTION
Brake Discs Damaged.
CORRECTIVE ACTION
1.
Repair winch (WP 0125).
2.
Replace winch (WP 0125).
SYMPTOM
HYDRAULIC OIL LEAKS FROM VENT PLUG
MALFUNCTION
Brake Cylinder Seal Defective.
CORRECTIVE ACTION
1.
Repair winch (WP 0125).
2.
Replace winch (WP 0125).
0019-3
03/15/2011Rel(1.8)root(tswp)wpno(T00024)