Table 2-8. Troubleshooting Subject Index-continued

TM 9-2320-279-20-1

Troubleshooting Index (Cont)

2-15. TROUBLESHOOTING INSTRUCTIONS (CONT).

Table 2-8. Troubleshooting Subject Index (Cont)

Subject

Vehicle System

Page

Engine fails to crank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Engine . . . . . . . . . . . . . . . . . . . . 2-59

ENGINE HIGH IDLE does not operate (M977, M985) . . . . . . . . . . . .

Engine . . . . . . . . . . . . . . . . . . . . 2-66

ENGINE HIGH IDLE does not operate (M983) . . . . . . . . . . . . . . . . . . .

Engine . . . . . . . . . . . . . . . . . . . . 2-70

ENGINE HIGH IDLE does not operate when craning

(M984, M985E1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Engine . . . . . . . . . . . . . . . . . . . . 2-78

ENGINE HIGH IDLE does not operate (M984A1) . . . . . . . . . . . . . . . .

Engine . . . . . . . . . . . . . . . . . . . . 2-82

ENGINE HIGH IDLE does not operate when craning (M984A1) . . .

Engine . . . . . . . . . . . . . . . . . . . . 2-89

ENGINE HIGH IDLE does not operate when using heavy-duty

winch in manual control (M984A1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Heavy-Duty Winch . . . . . . . . . 2-106

ENGINE HIGH IDLE does not operate when using heavy-duty

winch in remote control (M984A1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Heavy-Duty Winch . . . . . . . . . 2-103

ENGINE HIGH IDLE does not operate when using retriever

system (M984A1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Heavy-Duty Winch . . . . . . . . . 2-110

ENGINE HIGH IDLE does not operate when using heavy-duty

winch (M984) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Engine . . . . . . . . . . . . . . . . . . . .

2-99

Engine fails to develop full power/does not run smoothly . . . . . . . . . .

Engine . . . . . . . . . . . . . . . . . . . .

2-63

Engine speed control does not operate (M978) . . . . . . . . . . . . . . . . . . . .

Engine . . . . . . . . . . . . . . . . . . . .

2-74

ENGINE STOP switch does not activate fuel shutdown solenoid . . .

Electrical . . . . . . . . . . . . . . . . . .

2-126

Engine will not start, or stalls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fuel . . . . . . . . . . . . . . . . . . . . . . .

2-111

Ether starting aid does not work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Electrical . . . . . . . . . . . . . . . . . .

2-130

Excessive movement of trailer kingpin in fifth wheel . . . . . . . . . . . . .

Fifth Wheel . . . . . . . . . . . . . . . .

2-175

Excessive noise from winch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Self-Recovery Winch . . . . . . . .

2-177

Fairlead tensioner motor does not operate (M984A1) . . . . . . . . . . . . . .

Heavy-Duty Winch . . . . . . . . .

2-194

Front axle parking brakes will not apply (M984A1) . . . . . . . . . . . . . . .

Dual Air Brake . . . . . . . . . . . . .

2-173

Front axle parking brakes will not release (M984A1) . . . . . . . . . . . . .

Dual Air Brake . . . . . . . . . . . . .

2-174

Fuel flow does not stop within 15 seconds after opening V12 B/L

PRECHECK VALVE when bottom loading with exterior pump . . .

Tanker . . . . . . . . . . . . . . . . . . . .

2-226

Fuel level gage does not register or registers inaccurately . . . . . . . . .

Fuel . . . . . . . . . . . . . . . . . . . . . . .

2-113

Fuel servicing rate is slow or no flow . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Tanker . . . . . . . . . . . . . . . . . . . .

2-235

Fuel spills from vent when bottom loading with exterior pump . . . .

Tanker . . . . . . . . . . . . . . . . . . . .

2-225

Hard to steer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Steering . . . . . . . . . . . . . . . . . . .

2-147

Heater fails to sufficiently warm engine (coolant pump operating) .

Arctic Heater Kit (Model A) .

2-255

Heater fan motor will not operate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Electrical . . . . . . . . . . . . . . . . . .

2-115

Heat output to battery box too low . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Arctic Heater Kit (Model A) .

2-254

High crankcase pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Engine . . . . . . . . . . . . . . . . . . . .

2-66

High oil consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Engine . . . . . . . . . . . . . . . . . . . .

2-66

Hoist operation slow or abnormal when lifting or lowering load . . . .

Material Handling Crane

(M977, M985, M984A1) . . . .

2-201

Hoist will not lift or lower load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Material Handling Crane

(M977, M985, M984A1) . . . .

2-200

Left or right windshield wiper does not work . . . . . . . . . . . . . . . . . . . . .

Air . . . . . . . . . . . . . . . . . . . . . . . .

2-140

Light not working . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Electrical . . . . . . . . . . . . . . . . . .

2-120

Loss of fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Transmission . . . . . . . . . . . . . . .

2-154

Marker and identification lights do not work . . . . . . . . . . . . . . . . . . . . .

Electrical . . . . . . . . . . . . . . . . . .

2-129

Chaange77

Ch nge

2-56