TM-9-2320-285-24-1
TRUCK TRACTOR, YARD TYPE, 43,500 LB GVW, DED, 4X2, ARMY MODEL M878A1
TECHNICAL MANUAL; ORGANIZATIONAL, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL
OCTOBER 1985
TM-9-2320-285-24-1 - Page 36 of 987
TM 9-2320-285-24-1
2-6.
TROUBLESHOOTING SYMPTOM INDEX (CONT)
Para/Malfunction
Page
TRANSMISSION (cont)
Individual shift (2-3, 3-4, 4-5) occurs at
too high speed .
...................................................................................
3-14/7
3-92
All automatic shifts occur at too low speed .
...............................................
3-14/8
3-93
Individual shift (2-3, 3-4, 4-5) occurs at
too low speed .
............................................................................
3-14/9
3-93
Slow or erratic shifting .
...............................................................................
2-37/11,3-14/10
2-425,3-93
Rough shifting .
...........................................................................................
2-37/12,3-14/11
2-426,3-93
Clutch slippage in all forward gears .
...........................................................
2-37/13,3-14/12
2-426,3-94
Excessive creep in first and reverse .
..........................................................
3-14/13
3-94
Insufficient creep in first and reverse .
........................................................
3-14/14
3-94
Excessive vibration .
....................................................................................
2-37/14,3-14/15
2-426,3-94
High stall speed .
.........................................................................................
3-14/16
3-94
Low stall speed .
..........................................................................................
3-14/17
3-95
PROPELLER SHAFT
Excessive noise in propeller shaft .
.............................................................
2-38/1
2-427
Excessive vibration in propeller shaft .
........................................................
2-38/2
2-427
FRONT AXLE
Rapid or uneven tire wear .
.........................................................................
2-39/1,3-15/1
2-428,3-95
Hard steering .
.............................................................................................
3-15/2
3-95
Cross tube ends wear rapidly .
....................................................................
3-15/3
3-96
Steering arm ball stud heavily worn .
...........................................................
3-15/4
3-96
Knuckle pins and bushings worn excessively .
...........................................
3-15/5
3-96
Front axle shimmys or vibrates .
.................................................................
2-39/2,3-15/6
2-428,3-96
Continuous wheel noise .
............................................................................
2-39/3
2-428
Hub leaks oil .
..............................................................................................
2-39/4
2-429
REAR AXLE
Lubricant leaking from differential breather .
...............................................
2-40/1
2-430
Continuous axle or wheel noise .
.................................................................
2-40/2
2-430
Differential carrier assembly overheating .
..................................................
2-40/3
2-430
Axle noise when driving .
.............................................................................
2-40/4
2-431
Hub leaks oil .
..............................................................................................
2-40/5
2-431
Lubricant leaking from differential
carrier assembly .
................................................................................
3-16/1
3-97
SERVICE BRAKE SYSTEM
Front or rear axle brakes release slowly .
...................................................
2-46/1
2-520
Uneven or erratic front axle brakes .
...........................................................
2-46/2
2-520
Uneven or erratic rear axle brakes .
............................................................
2-46/3
2-521
Front axle brakes automatic adjustment
not operating .
.....................................................................................
2-46/4
2-522
Front axle brakes dragging .
........................................................................
2-46/5
2-523
Rear axle brakes dragging .
........................................................................
2-46/6
2-524
Front axle brakes grabbing .
........................................................................
2-46/7
2-526
Rear axle brakes grabbing .
........................................................................
2-46/8
2-526
Front axle brakes linings wear unevenly .
...................................................
2-46/9
2-527
Rear axle brakes linings wear unevenly .
....................................................
2-46/10
2-528
Front axle brakes frozen or locked .
............................................................
2-46/11
2-529
Rear axle brakes frozen or locked .
............................................................
2-46/12
2-529
Insufficient brake force to stop vehicle
(front axle brakes) .
.............................................................................
2-46/13
2-530
(rear axle brakes) .
..............................................................................
2-46/14
2-531
2-13
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