Specifications

TM 9-2330-384-14&P
1-13. BRAKE SYSTEM (Con't).
b. MAJOR COMPONENTS AND THEIR FUNCTION.
KEY
NAME
FUNCTION
1
EMERGENCY and
Provide conveniently operated, leak-free air connections between
SERVICE Air Couplings
tractor and semitrailer.
KEY
NAME
2 SERVICE Supply Line
FUNCTION
Delivers air pressure to air reservoirs and to semitrailer brakes
whenever service brake pedal in tractor is applied.
3
EMERGENCY Supply Line
Delivers constant air pressure to air reservoirs and to rear chamber
of each brake chamber.
1-28