TM-9-2320-283-34-1
TRUCK TRACTOR, LINE HAUL, 50,000 GVWR, 6X4, M915A1
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
DECEMBER 1983
TM-9-2320-283-34-1 - Page 37 of 624
TM 9-2320-283-34-1
EQUIPMENT DESCRIPTION AND DATA
1-7.
EQUIPMENT CHARACTERISTICS, CAPABILITIES, AND FEATURES (Continued).
h.
Forward-Rear Axle Brake Chamber.
The forward-rear axle brake chamber is both spring
and air operated.
During normal
driving, air pressure cages the I spring.
When service brakes are applied, air pressure applies brakes and
cages the spring.
When air pressure is released, either by the parking brake valve, or accidental loss of air pressure,
spring pressure applies brakes.
1-26
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