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 1189 of 1313
TWO PRESSURE MODES INDICATED WITH STEADY MODE LIGHTS - Continued
STEP
13.
DO HUB AIR SEALS LEAK?
Perform leak test (Volume 3, WP
0487) on hub air seals.
T0980DAA
AIR SEALS
WHEEL
VALVE
Figure 11.
Hub Air Seals.
CONDITION/INDICATION
DO HUB AIR SEALS LEAK?
DECISION
YES - Front air seals leak.
Replace faulty seals (Volume 3, WP
0481). Go to Step (23) to verify problem is
solved.
YES - Rear air seals leak. Replace faulty seals (Volume 3, WP
0482). Go to Step (23) to verify problem is solved.
NO - Go to Step (14).
TM 9-2320-272-23-1
0144
0144-12
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