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 1235 of 1313
SYSTEM REPEATEDLY RESUMES CYCLING 30 SECONDS AFTER MODE LIGHT STOPS FLASHING -
Continued
STEP
1.
DO AIR LINES BETWEEN WHEEL VALVE AND WHEEL RIM HAVE CRACKS OR OTHER DAMAGE?
a.
Measure and record pressure of each tire (TM 9-2320-272-10).
T0897DAA
AIR SEALS
WHEEL
VALVE
Figure 1.
Wheel Valve.
b.
Refer to point to point schematics.
WARNING
Air system components are subject to high pressure. Always relieve pressure before
loosening or removing air system components. Failure to comply may result in injury or
death to personnel.
c.
For all tires significantly outside pressure limits, inspect front wheel air lines and inspect rear wheel air
lines between wheel valve and wheel rim for cracks and damage.
CONDITION/INDICATION
DO AIR LINES BETWEEN WHEEL VALVE AND WHEEL RIM HAVE CRACKS OR OTHER DAMAGE?
DECISION
YES - Front air lines damaged M939A2. Replace damaged air line (Volume 3, WP
0490). Go to Step (4) to
verify problem is solved.
YES - Rear air lines are damaged M939A2. Replace damaged air line (Volume 3, WP
0491). Go to Step (4) to
verify problem is solved.
NO - Go to Step (2).
TM 9-2320-272-23-1
0147
0147-2
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