TM 9-2350-261-20-1
Section II. TROUBLESHOOTING
TASK INDEX
T a sk
Page
ENGINE SYSTEM
Engine Overheats
. . . . . . . . . . . . . .... 3 - 10
Engine Overcools . . . . . . . . . . . ........ . ... 3 - 14
Engine Does Not Crank . . . . . . . . . . . . . . . ..3–15
Engine Cranks
Engine Cranks
Engine Cranks
Below 40° (Air
slowly . . . . . . . . . . . . . . . . . ...3-25
But Will Not Start . ...3-30
But Will Not Start
Box Heater Is Used) ..3-34
Engine Runs Rough, Stalls, or Does
Not Put Out Full Power . . . . . . . . . . . . . . ...3-44
Engine Oil Low Pressure Indicator
Fails to Go Off After Engine Starts . . 3–50
Engine Does Not Remain At Idle
RPM With Suspension Lockout
System Engaged (M741A1 Only) . . . . ...3-51
Engine Fuel System Schematic . . . . . . . . . 3–52
Starting System Schematic . . . . . . . . . . . . . . 3–53
Air Box Heater System Schematic . . . . . 3–54
CHARGING SYSTEM
Charging System Malfunctions . . . . . . ...3-55
Disconnect/Connect Alternator
(Generator) Test Kit . . . . . . . . . . . . . . . . ...3-64.1
200 Amp Charging System
Operational Check . . . . . . . . . . . . . . . . . . . . . 3-64.4
200 Amp No Charge/Regulation
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . 3–64.7
200 Amp Full Field Charge
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . 3–64.9
200 Amp Over Voltage
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . ..3–64.11
Task
Page
100 Amp Engine Charging System
Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . ... 3 - 65
200 Amp Engine Charging System
Schematic . . . . ..... . . . . . . . . . . . . . . . . . . . . .. 3 - 66
200 Amp Engine Charging System
Schematic (M981 Only) . . . . . . . . . . . . . . . ...3-67
ELECTRICAL SYSTEM
Differential Hi Oil Temp Indicator
Comes On
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 - 68
Transmission Oil Hi Temp Indicator
Comes On
. . . . . . . .. . . . . . . . . . . . . . .. 3-71
No Exterior Lights Operate . . . . . . . . . . . . . 3–73
Blackout Drive Light Does Not Work .3-75
Service Headlights Do Not Operate . ..3-78
Infrared Headlight(s) Does Not
Operate
. . . . . . . . . . . . . . ..... . . . . . .... . ... 3-83
Service and/or Blackout Stop Lights
Malfunction . . . . . . . . . . . . ..... 3 - 8 9
Blackout Marker Light(s) and/or
Tail Light(s) Do Not Operate . . . . . . . . . . . 3–93
Service Tail Light Does Not Operate .3-98
Trailer Lights Do Not Operate . . . .. 3-100
Horn Does Not Operate
. . . . . .... . . . . . 3-102
.
Instrument Panel Illumination Lights
Malfunction . ........ . . ....... . . . . . . . . 3-107
Dome Light(s) Work Improperly . . . ...3-110
Infrared Periscope Works Improperly 3-112
Radio(s) Does Not Work . . . . . . . . . . . . ...3-116
Dome Lights Malfunction
(M577A2 Only) . . .... . . . . . . . . . . . . . . . . .
3-117
3-8
Change 1
