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 993 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
3.
IS THERE PROPER AIR PRESSURE AT THE RIGHT FRONT SERVICE BRAKE CHAMBER?
a.
Stop engine and open all draincocks until brake system air pressure is vented.
b.
Close all draincocks.
T0203DAA
Service Brake
Chamber
Adapter Fitting
Tee
Delivery Line
Transducer
Figure 2.
Front Service Brake Chamber.
c.
Disconnect delivery line from right service brake chamber adapter fitting (Volume 3, WP
0434). Refer to
point to point schematics.
d.
Connect tee between disconnected service brake chamber and delivery line.
e.
Connect pressure gauge to tee.
f.
Assistant starts engine and runs to build air supply to normal operating pressure.
TM 9-2320-272-23-1
0120
0120-4
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