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 1027 of 1313
INSUFFICIENT BRAKES (VEHICLE STOPPING DISTANCE TOO LONG, NO APPARENT AIR SYSTEM
FAILURE WITH GAUGES AT NORMAL OPERATING PRESSURE, WARNING BUZZER NOT SOUNDING) -
Continued
STEP
21.
IS PROPER AIR SUPPLY PRESSURE AT DOUBLE CHECK VALVE #1?
a.
Stop engine and open all draincocks until brake system air pressure is vented.
b.
Close all draincocks.
c.
Disconnect pressure gauge from vehicle and return air line to original condition.
d.
Direct assistant to keep foot off service brake pedal.
DELIVERY LINE
T0220DAA
DOUBLECHECK
VALVE #1
AIR SUPPLY LINE
TRANSDUCER
Figure 20.
Double Check Valve #1.
TM 9-2320-272-23-1
0120
0120-38
Back to Top
