TM-9-2320-272-24-1
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 1 OF 4
JUNE 1998
TM-9-2320-272-24-1 - Page 72 of 1015
TM 9-2320-272-24-1
1-23. COMPRESSED AIR AND BRAKE SYSTEM OPERATION (Contd)
d. Spring Airbrake System Operation.
The spring airbrake system applies rear brakes when vehicle parking brake is applied or in event of a
major brake failure. The spring brake is located on one of the two service brake chambers at each rear
wheel. Major components of the spring airbrake system are:
1-62
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