TM-9-2320-283-34-1
TRUCK TRACTOR, LINE HAUL, 50,000 GVWR, 6X4, M915A1
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
DECEMBER 1983
TM-9-2320-283-34-1 - Page 47 of 624
TM 9-2320-283-34-1
TROUBLESHOOTING
2-6.
TROUBLESHOOTING SYMPTOM INDEX.
MALFUNCTION
MALFUNCTION
TROUBLESHOOTING
NO
PROCEDURE
PAGE
TRANSMISSION
1.
Transmission shifts at too high a speed
. .
...............................................................................
2-4
2.
Transmission shifts at too low a speed .
..................................................................................
2-4
3.
Oil leaking into converter housing . .
........................................................................................
2-4
4.
Transmission overheating.
........................................................................................................
2-4
5.
No response to shift lever movement
. .
.................................................................................
2-5
6.
Rough shifting . .
......................................................................................................................
2-5
7.
Dirty oil.
...................................................................................................................................
2-5
8.
Oil leaking at output shaft .
.......................................................................................................
2-6
9.
Transmission slips in all forward gears .
..................................................................................
2-6
10.
Transmission slips in first and reverse only . .
...........................................................................
2-6
11.
Transmission slips in fifth and reverse only .
..........................................................................
2-6
12.
Transmission slips in fourth only.
.............................................................................................
2-7
13.
Transmission slips in third only.
................................................................................................
2-7
14.
Transmission slips in second only.
............................................................................................
2-7
15.
Vehicle moves in neutral .
.......................................................................................................
2-7
REAR TANDEM AXLES
16.
Excessive play (backlash) .
.......................................................................................................
2-8
17.
Excessive noise .
......................................................................................................................
2-9
18.
Lockout will not engage .
..........................................................................................................
2-9
19.
Lubricant leaking .
..................................................................................................................
2-10
BRAKE SYSTEM
20.
Air pressure too high .
.............................................................................................................
2-10
21.
Air pressure too low.
...............................................................................................................
2-10
STEERING SYSTEM
22.
Excessive play at steering wheel.
..........................................................................................
2-11
23.
Steering gear leaking oil.
........................................................................................................
2-11
24.
Hard to steer in one or both directions .
.................................................................................
2-11
25.
No recovery.
...........................................................................................................................
2-11
2-3
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