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 TM 55-1905-222-14
Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
RAMP SYSTEM
1. CONTROL VALVE LEVER MOVES BUT WINCH DOES NOT TURN (CABLE IS FREE TO MOVE)
Step 1.
Check to see if power-take-off (PTO) is disengaged
Engage PTO.
Step 2.
Check to see if hydraulic diverter valve is set for BILGE PUMP operation.
Set hydraulic diverter valve for RAMP operation.
Step 3.
Check to see if oil level in reservoir is low.
Replenish as necessary.
Step 4.
Check to see if any hydraulic line has burst.
Notify direct support maintenance.
2. CONTROL VALVE LEVER DOES NOT MOVE.
Check to see if control valve is seized.
Notify direct support maintenance.
3. RAMP CONTINUES TO LOWER WITH CONTROL VALVE IN NEUTRAL.
Check to see if lower hand pump shutoff valve is open.
Close lower hand pump shutoff valve.
4. UNUSUALLY SLOW RAMP OPERATION.
Step 1.
Check to see if lower hand pump shutoff valve is open.
Close lower hand pump shutoff valve.
Step 2.
Check to see if engines are not up to speed.
Increase engine speed.
3-8
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