TM-9-2320-272-23-1
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 1 OF 5
SEPTEMBER 2012
TM-9-2320-272-23-1 - Page 429 of 1313
ENGINE DOES NOT REACH NORMAL OPERATING TEMPERATURE - Continued
STEP
3.
DOES COOLANT TEMPERATURE GAUGE OPERATE PROPERLY?
a.
Place battery switch in OFF position.
b.
Remove circuit 33 wire from coolant temperature sending unit. Refer to point to point schematics.
Circuit 33 Wire
M939/A1 VEHICLES
M939/A2 VEHICLES
Temperature
Sending Unit
Circuit 33 wire
T1108DAA
Temperature
Sending Unit
Figure 3.
Coolant Temperature Sending Unit.
TM 9-2320-272-23-1
0027
0027-4
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