TM 9-2350-256-20-1
UNIT MAINTENANCE
RECOVERY VEHICLE, FULL TRACKED: MEDIUM, M88A1
NSN 2350-00-122-6826, EIC AQA
TRANSMISSION CENTER SECTION AND OUTPUT REDUCTION GEARS
TROUBLESHOOTING PROCEDURE
INITIAL SETUP:
Tools and Special Tools
References
Tool kit, general mechanic's (item 59, WP 0490 00)
WP 0361 00
Cleaner, oil cooler (item 138, WP 0488 00)
WP 0362 00
TM 9-2350-256-10
Personnel Required
Mechanics (2)
Troubleshooting Procedure
Transmission Center Section and Output Reduction Gears
Symptom
Transmission center section or output reduction gears malfunctioning.
Malfunction
High transmission oil temperature.
Do steps 1 thru 5.
Vehicle will steer or pivot but will not drive in any range. Do step 6.
Vehicle will not drive in low range.
Do step 6.
Vehicle will not drive in intermediate range.
Do step 6.
Vehicle will not drive in high range.
Do step 6.
Vehicle will drive but creeps in neutral.
Do step 6.
Transmission cannot be down-shifted. Do step 7.
CORRECTIVE ACTION
1.
Check transmission for proper oil level. Add oil if low or drain to proper level if over full (refer to TM
9-2350-256-10).
2.
Open side air inlet doors. Check transmission oil cooler screens for restrictions. Remove all restrictions
from oil cooler screens.
3.
Visually inspect transmission oil cooler air passages. If transmission oil cooler air passages are
restricted, clean air passages using oil cooler cleaning tool (item 138, WP 0488 00).
0026 00-1
