TM-9-2320-283-20-1
TRUCK TRACTOR, LINE HAUL, 50,000 GVWR, 6X4, M915A1
TECHNICAL MANUAL; ORGANIZATIONAL MAINTENANCE PART 1 OF 3
DECEMBER 1983
TM-9-2320-283-20-1 - Page 96 of 926
TM 9-2320-283-20-1
PRINCIPLES OF OPERATION.
1-20.
BRAKE SYSTEM (Continued).
b.
Brake System Components (Continued).
(11)
Double Check and Stoplamp Valve.
Directs air flow from two ports of brake treadle valve into a single outlet line leading to the tractor protection valve.
Does not allow air pressure to flow back into brake treadle valve.
Stoplamps are switched on when this valve is
actuated.
(12)
Double Check Valve.
Directs air flow from brake treadle valve and front gladhands into tractor protection valve.
Does not allow air
pressure to flow back into brake treadle valve or front gladhands.
TA 236794
1-75
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