TM 9-2350-277-20-1
CHAPTER 2
UNIT TROUBLESHOOTING PROCEDURES
WORK PACKAGE INDEX
Title
Sequence No.
INTRODUCTION TO HOW TO USE TROUBLESHOOTING.......................................................................................0005 00
MALFUNCTION/SYMPTOM INDEX WP......................................................................................................................0006 00
ENGINE CHARGING SYSTEM SCHEMATIC (ALL EXCEPT M981A3 ONLY)........................................................0007 00
ENGINE CHARGING SYSTEM SCHEMATIC (M981A3 ONLY).................................................................................0008 00
ENGINE FUEL SYSTEM SCHEMATIC (ALL EXCEPT M577A3 AND M1068A3)...................................................0009 00
ENGINE FUEL SYSTEM SCHEMATIC (M577A3 AND M1068A3 ONLY).................................................................0010 00
ENGINE STARTER CIRCUIT SCHEMATIC (ALL EXCEPT M981A3).......................................................................0011 00
ENGINE STARTER CIRCUIT SCHEMATIC (M981A3 ONLY)....................................................................................0012 00
ENGINE AIR BOX HEATER SCHEMATIC....................................................................................................................0013 00
ENGINE OVERHEATS.....................................................................................................................................................0014 00
ENGINE OVERCOOLS....................................................................................................................................................0015 00
ENGINE DOES NOT CRANK..........................................................................................................................................0016 00
ENGINE DOES NOT START (COLD WEATHER ONLY).............................................................................................0017 00
WAIT INDICATOR FLASHES DURING START ATTEMPTS (PREGLOW OR AFTERGLOW)...............................0018 00
WAIT INDICATOR LIGHT DOESN’T LIGHT...............................................................................................................0019 00
ENGINE CRANKS SLOWLY...........................................................................................................................................0020 00
ENGINE CRANKS BUT WILL NOT START..................................................................................................................0021 00
ENGINE CRANKS BUT WON’T START BELOW 40
(AIR BOX HEATER IS USED)..............................................0022 00
ENGINE CRANKS BUT WON’T START BELOW 40
F (GLOW PLUGS ARE USED)..............................................0023 00
ENGINE RUNS ROUGH, STALLS, OR DOESN’T PUT OUT FULL POWER.............................................................0024 00
GENERATOR MALFUNCTIONS AS INDICATED BY BATTERY/GENERATOR INDICATOR...............................0025 00
ENGINE OIL LOW PRESSURE INDICATOR COMES ON...........................................................................................0026 00
ELECTRICAL SCHEMATIC (ALL EXCEPT M981A3).................................................................................................0027 00
ELECTRICAL SCHEMATIC (M981A3 ONLY)..............................................................................................................0028 00
NO EXTERIOR LIGHTS OPERATE................................................................................................................................0029 00
BLACKOUT DRIVE LIGHT DOESN’T WORK.............................................................................................................0030 00
SERVICE HEADLIGHTS DON’T WORK.......................................................................................................................0031 00
INFRARED HEADLIGHT(S) DON’T WORK................................................................................................................0032 00
SERVICE AND/OR BLACK OUT STOP LIGHTS MALFUNCTION............................................................................0033 00
BLACKOUT MARKER LIGHT(S) DON’T WORK........................................................................................................0034 00
SERVICE TAILLIGHT DOESN’T WORK.......................................................................................................................0035 00
TRAILER LIGHTS DON’T WORK.................................................................................................................................0036 00
HORN DOES NOT WORK...............................................................................................................................................0037 00
INSTRUMENT PANEL AND/OR TRANS CONTROLLER ILLUMINATION LIGHTS
MALFUNCTION.....................................................................................................................................................0038 00
DOME LIGHT(S) DO NOT WORK.................................................................................................................................0039 00
DOME LIGHT MALFUNCTION (M577A3 ONLY).......................................................................................................0040 00
BLACKOUT DOME LIGHTS DO NOT WORK (M1068A3 ONLY)..............................................................................0041 00
