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 876 of 1313
AIR PRESSURE GAUGE INOPERATIVE - Continued
STEP
2.
IS AIR PRESSURE GAUGE OPERATING PROPERLY?
a.
Refer to point to point schematics.
b.
Replace air gauge with one known to be good (Volume 5, WP
0818).
c.
Start engine.
T0629DAA
Figure 2.
Air Pressure Gauge.
NOTE
If air pressure reads 30 psi within 5 minutes, air pressure gauge was not operating
correctly.
d.
Observe air pressure gauge and verify it reads at least 30 psi within five minutes.
CONDITION/INDICATION
IS AIR PRESSURE GAUGE OPERATING PROPERLY?
DECISION
NO - If test air pressure gauge operates properly, replace defective air pressure gauge (Volume 5, WP
0818).
Go to Step (3) to verify problem is solved.
YES - Notify supervisor. It is possible another troubleshooting work package applies.
TM 9-2320-272-23-1
0102
0102-3
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