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 893 of 1313
TRANSMISSION TEMPERATURE GAUGE INOPERATIVE - Continued
STEP
1.
IS TRANSMISSION TEMPERATURE SENDING UNIT OPERATIONAL?
a.
Place battery switch in the OFF position.
b.
Refer to point to point schematics.
T0993DAA
CIRCUIT 324 WIRE
TRANSMISSION
TEMPERATURE
SENDING UNIT
Figure 1.
Transmission Temperature Sending Unit.
c.
Remove circuit 324 wire from transmission temperature sending unit.
d.
Place battery switch to ON position.
e.
Have assistant momentarily ground disconnected circuit 324 wire.
NOTE
If transmission temperature gauge deflects when grounded, transmission temperature
sending unit is faulty.
f.
Observe transmission temperature gauge for movement.
CONDITION/INDICATION
IS TRANSMISSION TEMPERATURE SENDING UNIT OPERATIONAL?
DECISION
YES - Go to Step (2).
NO - Replace transmission temperature sending unit (Volume 2, WP
0341). Go to Step (4) to verify problem is
solved.
TM 9-2320-272-23-1
0105
0105-2
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