TM 9-2350-256-20-1
UNIT MAINTENANCE
RECOVERY VEHICLE, FULL TRACKED: MEDIUM, M88A1
NSN 2350-00-122-6826, EIC AQA
HOISTING BOOM TROUBLESHOOTING PROCEDURE
INITIAL SETUP:
Tools and Special Tools
References
Tool kit, general mechanic's (item 59, WP 0490 00)
WP 0414 00
STE/ICE-R kit (item 57, WP 0490 00)
WP 0415 00
WP 0416 00
TM 9-2350-256-10
Troubleshooting Procedure
Hoisting Boom
Symptom
Hoisting boom malfunctioning.
Malfunction
Hoisting boom does not operate.
Do steps 1 thru 6.
Hoisting boom operates with difficulty.
Do steps 3 thru 10.
Hoisting boom creeps.
Do steps 10 and 11.
Boom stayline cables become slack during live boom operation. Do step 12.
CORRECTIVE ACTION
NOTE
The hoisting boom troubleshooting procedures are performed using the main hydraulic system as a fluid
power source. If hoisting boom operates using main hydraulic but not auxiliary hydraulic, troubleshoot
auxiliary hydraulic system. If hoisting boom operates using auxiliary hydraulic but not main hydraulic,
troubleshoot main hydraulic system.
1.
Attempt operation of the hoist winch, main winch, and spade. If hoist winch, main winch, and spade
do not operate, troubleshoot main hydraulic system and/or auxiliary hydraulic system. If hoist winch,
main winch, and spade operate go to step 2.
0032 00-1
