RECOVERY VEHICLE, FULL TRACKED: MEDIUM, M88A1
MAIN WINCH CIRCUIT (MAIN HYDRAULIC SYSTEM) TROUBLESHOOTING PROCEDURE
Tools and Special Tools
Main Winch Circuit (Main Hydraulic System)
Main winch circuit (main hydraulic system) malfunctioning.
Main winch will not operate.
Do steps 1 thru 14.
Main winch pays in and out under no load, but will not pay in or out under load. Do steps 15 thru 21.
Main winch pays in but will not pay out.
Do steps 22 thru 24.
Main winch pays out but will not pay in.
Do steps 25 and 26.
Main winch creeps in either direction when in hold position. Do step 27.
Main winch will not hold load.
Do steps 28 and 29.
Insufficient main system oil pressure.
Do steps 30 thru 32.
Level winder not operating.
Do steps 33 thru 35.
Level winder not operating properly. Do step 36.
Close APU emergency winch control valve for main hydraulic system operation.
Attempt operation of hoist winch, boom, and spade.
If hoist winch, boom, and spade operate, proceed to step 9.