TM-9-2320-280-20-1
TRUCK, UTILITY: M998 SERIES
TECHNICAL MANUAL; UNIT MAINTENANCE; VOLUME 1 OF 3
JANUARY 1996
TM-9-2320-280-20-1 - Page 124 of 888
Change 2
2-33
TM 9-2320-280-20-1
2-14. HOW TO USE THIS TROUBLESHOOTING GUIDE (Cont’d)
THERE ARE 5 TOP LEVEL TESTS.
USE THESE FOR GENERAL SYMPTOMS
(HARD-TO-START, RUNS ROUGH, ETC).
THERE ARE 21 SYSTEM LEVEL TESTS
.
THESE ARE USED BY THE TOP
LEVEL TESTS BUT YOU CAN GO
STRAIGHT TO THEM IF YOU KNOW
WHAT YOU'RE DOING.
TROUBLESHOOTING PAGES
.
THE LAYOUT IS SHOWN ON THE NEXT PAGE.
THEY ARE SET UP SO THAT YOU DON’T READ
ANY MORE THAN YOU HAVE TO.
AFTER YOU
HAVE FOUND THE FAULT, CORRECT IT AND
MAKE SURE THE SYSTEM IS WORKING
PROPERLY. CONTINUE IF THERE ARE
ADDITIONAL PROBLEMS.
TOP LEVEL TESTS
PAGE
ENGINE STARTING
2-41
ENGINE RUNNING
2-47
COOLING
2-57
LUBRlCATlON
2-65
ELECTRICAL
2-71
SYSTEM LEVEL TESTS
PAGE
FUEL
2-95
AIR INTAKE/EXHAUST
2-137
COMPRESSION/MECHANICAL
2-143
ENGINE COOLING
2-155
ENGINE LUBRICATION
2-187
ALTERNATOR
2-194
PROTECTIVE CONTROL BOX/
2-227
DISTRIBUTION BOX
BATTERY CIRCUIT
2-251
STARTER CIRCUIT
2-261
GLOWPLUGS (PCB)
2-303
GLOWPLUGS (DISTRIBUTION BOX)
2-318.1
INSTRUMENTS
2-319
LIGHTS
2-389
TRANSMISSION (3L80)
2-399
TRANSMISSION (4L80-E)
2-11
BRAKES
2-445
STEERING
2-459
DRIVETRAIN
2-79
AMBULANCE ELECTRICAL
2-497
AMBULANCE MECHANICAL
2-693
WINCH
2-715
DCA TROUBLESHOOTING
2-723
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