TM 9-2350-256-20-1
UNIT MAINTENANCE
RECOVERY VEHICLE, FULL TRACKED: MEDIUM, M88A1
NSN 2350-00-122-6826, EIC AQA
VENTILATION BLOWER ASSEMBLY TROUBLESHOOTING PROCEDURE
INITIAL SETUP:
Tools and Special Tools
References (cont.)
Tool kit, general mechanic's (item 59, WP 0490 00)
References
WP 0153 00
WP 0250 00
Troubleshooting Procedure
Ventilation Blower Assembly
Symptom
Ventilation blower malfunctioning.
Malfunction
Blower motor does not run.
Do step 1.
Blower runs but does not come up to speed.
Do steps 2 thru 4.
Blower unusually noisy. Do steps 5 and 6.
CORRECTIVE ACTION
1.
Check for defective blower switch and/or circuit breaker. Troubleshoot vehicle blower circuit (see WP
WARNING
Do not operate or perform maintenance on hydraulic system while doing maintenance work in the
vicinity of the boom actuating cylinder.
2.
Check for obstructed air passage. To access intake opening, hoist boom and remove rubber covering
of the boom, actuating cylinder and hoisting boom connection inside the vehicle. Remove any
obstructions. If blower still does not come up to speed, go to step 3.
3.
Check for low input due to low voltage batteries while engine is not running. Perform battery service-
ability test (see WP 0041 00). Recharge or replace low voltage batteries (see WP 0153 00). If blower
still does not come up to speed, go to step 4.
0025 00-1
