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TM 9-2320-279-20-1
Troubleshooting Index (Cont)
Subject
Vehicle System
Page
Air dryer constantly exhausts air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical . . . . . . . . . . . . . . . . . .
Air horn does not work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air . . . . . . . . . . . . . . . . . . . . . . . .
Air pressure buildup slow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air . . . . . . . . . . . . . . . . . . . . . . . .
Air pressure drops rapidly after engine shutdown . . . . . . . . . . . . . . . .
Air . . . . . . . . . . . . . . . . . . . . . . . .
Air pressure warning light and buzzer do not work when air
pressure drops below approximately 65 psi (448 kPa) . . . . . . . . . . .
Electrical . . . . . . . . . . . . . . . . . .
Air system pressure builds up to more than 130 psi (896 kPa) . . . . .
Air . . . . . . . . . . . . . . . . . . . . . . . .
Arctic heater does not operate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Arctic Heater Kit (Model B) .
Arctic heater Fault Code Retrieval Device (FCRD) operation . . . . . .
Arctic Heater Kit (Model B) .
Arctic heater indicator light does not illuminate . . . . . . . . . . . . . . . . . .
Arctic Heater Kit (Model B) .
Arctic heater diagnostic troubleshooting (Organizational Level) . . .
Arctic Heater Kit (Model B) .
AUXILIARY PUMP makes excessive noise . . . . . . . . . . . . . . . . . . . . . . .
Tanker . . . . . . . . . . . . . . . . . . . .
AUXILIARY PUMP fails to deliver rated flow . . . . . . . . . . . . . . . . . . . .
Tanker . . . . . . . . . . . . . . . . . . . .
AUXILIARY PUMP will not pump fuel . . . . . . . . . . . . . . . . . . . . . . . . . .
Tanker . . . . . . . . . . . . . . . . . . . .
Axles will not lock up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air . . . . . . . . . . . . . . . . . . . . . . . .
Battery weak or fails to maintain charge . . . . . . . . . . . . . . . . . . . . . . . .
Electrical . . . . . . . . . . . . . . . . . .
Boom operates abnormally, slowly, will not telescope in or out,
or raise or lower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Material Handling Crane
(M977, M985, M984A1) . . . .
Brakes grab when applied . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dual Air Brake . . . . . . . . . . . . .
Brakes overheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dual Air Brake . . . . . . . . . . . . .
Brakes will not respond properly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dual Air Brake . . . . . . . . . . . . .
Cannot bottom load fuel with tanker pump . . . . . . . . . . . . . . . . . . . . . .
Tanker . . . . . . . . . . . . . . . . . . . .
Cannot evacuate fuel from hoses or primary pump stops or fails
to deliver rated flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tanker . . . . . . . . . . . . . . . . . . . .
Circuit breaker open . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Arctic Heater Kit (Model A) .
Compressor cycles constantly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air . . . . . . . . . . . . . . . . . . . . . . . .
Compressor fails to unload . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air . . . . . . . . . . . . . . . . . . . . . . . .
Compressor leaks oil or coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air . . . . . . . . . . . . . . . . . . . . . . . .
Coolant pump fails to operate (indicator light comes on) . . . . . . . . . . .
Arctic Heater Kit (Model A) .
Coolant pump fails to operate (indicator light does not come on) . . .
Arctic Heater Kit (Model A) .
Crane boom moves slowly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Material Handling
Crane (M983) . . . . . . . . . . . . .
Crane controls sticking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Material Handling Crane
(M977, M985, M984A1) . . . .
Crane does not function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Material Handling
Crane (M983) . . . . . . . . . . . . .
Crane will not operate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Material Handling Crane
(M977, M985, M984A1) . . . .
Differential lock-up does not engage or disengage . . . . . . . . . . . . . . . .
Front and Rear Axle
Tandems . . . . . . . . . . . . . . . . . .
Dimmer switch fails to operate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical . . . . . . . . . . . . . . . . . .
DISCHARGE LINE PRESSURE GAGE (DLPG) or VENTURI/
NOZZLE PRESSURE GAGE (VNPG) not working . . . . . . . . . . . . . .
Tanker . . . . . . . . . . . . . . . . . . . .
Domelight does not work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical . . . . . . . . . . . . . . . . . .
Electric gages do not work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical . . . . . . . . . . . . . . . . . .
Engine brake will not operate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical . . . . . . . . . . . . . . . . . .
Engine cranks but does not start when ether injector is
actuated in cold weather . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel . . . . . . . . . . . . . . . . . . . . . . . 2-113
Change 7
3
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