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 1141 of 1313
SPRING BRAKES DO NOT SET (GAUGES AT NORMAL OPERATING PRESSURES, AIR EXHAUSTING NOT
HEARD WHEN PARKING BRAKE APPLIED) - Continued
STEP
3.
ARE ANY QUICK RELEASE VALVE AIR LINES CRIMPED?
Check all air lines attached to the quick release valve. Refer to point to point schematics.
T0310DAA
QUICK
RELEASE
VALVE
AIR LINES
Figure 3.
Quick Release Valve.
CONDITION/INDICATION
ARE ANY QUICK RELEASE VALVE AIR LINES CRIMPED?
DECISION
YES - Replace damaged air lines (Volume 5, WP
0805). Go to Step (5) to verify problem is solved.
NO - Go to Step (4).
TM 9-2320-272-23-1
0136
0136-4
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