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TM 10-3930-669-20
1. DRIVE AXLE OVERHEATING (CONT).
KNOWN INFO
Engine temperature 105°F or
over.
Glow plug indicator operates.
Parking brake OK.
Brake fluid OK.
Drive axle oil level correct.
Master cylinder OK.
Drive axle OK.
Axle oil pump ground wire OK.
Axle oil pump OK.
Relay R8 ground wire OK.
Wire 29 to relay R8 OK.
Wire 74 OK.
Relay R8 OK.
Wire 29 to drive axle
temperature switch OK.
Drive axle oil temperature
switch OK.
Wire 72 OK
POSSIBLE PROBLEMS
Drive axle oil cooler ground wire
faulty.
Drive axle oil cooler faulty.
Relay R7 ground wire faulty.
Wire 29 to relay R7 faulty.
Wire 73 faulty.
Relay R7 faulty.
Wire 29 to engine temperature
switch faulty.
Engine temperature switch
faulty.
Wire 71 faulty.
TEST OPTIONS
Voltage test.
STEACE-R .89.
REASON FOR QUESTION
This
question
eliminates
a
possible problem or group of
possible problems determining
where troubleshooting continues.
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