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 156 of 926
TM 9-2320-283-20-1
TROUBLESHOOTING.
2-10.
TROUBLESHOOTING SYMPTOM INDEX.
MALFUNCTION
MALFUNCTION
TROUBLESHOOTING
NO
PROCEDURE
PAGE
ENGINE
1
Engine Fails to Crank (STE/ICE Tests GO1-GO2-NG20) .
...................................................
2-36
2
Engine Cranks, but Fails to Start (STE/ICE Tests GO1-GO2-NG30-NG80) .
.......................
2-36
3
Engine Will Not Idle (STE/ICE Tests GO1-G67) .
.................................................................
2-37
4
Engine Overheats (Temperature Exceeds 210"F)
(STE/ICE Tests GO1-GO3-G05-NG31) .
..............................................................................
2-37
5
Intermittent Loss of Power (STE/ICE Tests GO1-G06-G08) .
...............................................
2-38
6
Sudden Loss of Power (STE/ICE Tests GO1-GO6-GO8-NG90) .
........................................
2-39
7
Gradual Loss of Power
(STE/ICE Tests GO1-GO6-GO8-NG90).
..............................................................................
2-39
8
Low or No Engine Oil Pressure
(STE/ICE Tests GO1-G03-NGO5-NG31).
............................................................................
2-40
9
Excessive Exhaust Smoke During Acceleration
(STE/ICE Tests GO1-NG90) .
...............................................................................................
2-40
10
Excessive Exhaust Smoke Throughout Speed Range
(STE/ICE Tests GO1-NG9O) .
..............................................................................................
2-41
11
Engine Stops (STE/ICE Tests GO1-G07-NG36).
.................................................................
2-41
12
High Oil Use (STE/ICE Tests GO1-G08).
.............................................................................
2-41
13
Slow Deceleration (Engine "Floats")
(STE/ICE Tests GO1-NG90) .
...............................................................................................
2-42
14
High Fuel Use (STE/ICE Tests GO1-GO6-NG90-NG130) .
..................................................
2-42
15
Exhaust Fumes in Cab .
........................................................................................................
2-42
COOLING SYSTEM
16
No Cab Heat .
........................................................................................................................
2-43
ELECTRICAL SYSTEM
17
Ether Solenoid Fails to Operate When Ether Start
Switch is Pushed.
..................................................................................................................
2-44
18
All Electrical Systems are Weak (STE/ICE Tests GO1-G04) .
..............................................
2-49
19
Starter Operates Slowly
(STE/ICE Tests GO1-GO2-NG30-NG130).
..........................................................................
2-50
20
Starter Fails to Operate
(STE/ICE Tests GO1-G04-NG20-NG80-NG81) .
..................................................................
2-51
21
Batteries Do Not Hold a Charge (Electrical System Shorted)
(STE/ICE Tests GO1-NG81) .
...............................................................................................
2-60
2-31
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