TM-9-2320-283-20-1
TRUCK TRACTOR, LINE HAUL, 50,000 GVWR, 6X4, M915A1
TECHNICAL MANUAL; ORGANIZATIONAL MAINTENANCE PART 1 OF 3
DECEMBER 1983
TM-9-2320-283-20-1 - Page 159 of 926
TM 9-2320-283-20-1
TROUBLESHOOTING.
2-10.
TROUBLESHOOTING SYMPTOM INDEX.
MALFUNCTION
MALFUNCTION
TROUBLESHOOTING
NO
PROCEDURE
PAGE
TRANSMISSION
91
Transmission Shifts at too High a Speed.
...........................................................................
2-292
92, Transmission Shifts at too Low a Speed .
..................................................................................
2-292
93
Transmission Overheating in all Ranges.
...........................................................................
2-292
94
No Response to Shift Lever Movement.
.............................................................................
2-292
95
Rough Shifting .
...................................................................................................................
2-293
96
Transmission Oil Dirty, Foamy, and/or Milky .
.....................................................................
2-293
97
Loss of Power .
....................................................................................................................
2-294
98
Clutch Slippage in all Forward Gears .
................................................................................
2-294
99
Vehicle Moves in Neutral.
...................................................................................................
2-294
100
Oil Thrown from Filler Tube .
...............................................................................................
2-294
PROPELLER SHAFTS AND UNIVERSAL JOINTS
101
Excessive Shaft Noise or Vibration.
....................................................................................
2-295
102
Excessive Backlash .
...........................................................................................................
2-296
103
Continuous Axle or Wheel Noise.
.......................................................................................
2-296
104
Lubricant Leaking .
..............................................................................................................
2-297
105
Excessive or Uneven Tire Wear .
........................................................................................
2-297
REAR AXLE
106
Rear Axle Assembly Not Tracking Properly.
.......................................................................
2-298
BRAKE SYSTEM
107
Air Pressure Low.
................................................................................................................
2-298
108
Air Pressure High.
...............................................................................................................
2-300
109
Park Brakes Will Not Release .
...........................................................................................
2-302
110
Trailer Brakes Will Not Release.
.........................................................................................
2-302
111
Service Brakes Will Not Release (One Wheel Only) .
.........................................................
2-304
112
Service Brakes Will Not Apply .
...........................................................................................
2-304
113
No Service Brakes on Trailer Only .
....................................................................................
2-306
114
Trailer Hand Control Will Not Apply Trailer
Service Brakes.
................................................................................................................................
2-306
2-34
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