TM 9-2320-272-10
1-20.
COMPRESSED AIR AND BRAKE SYSTEM OPERATION (Contd)
A
WINDSHIELD WIPER CONTROL SWITCH - Opens air pressure valve in wiper motor to operate wipers.
B
WINDSHIELD WIPER MOTOR - Air-actuated motor powers windshield wipers.
C
WINDSHIELD WASHER CONTROL - Spring-loaded valve that allows air pressure to force washer fluid from
washer reservoir to windshield.
D
WINDSHIELD WASHER RESERVOIR - Container for windshield washer fluid.
E
ACCESSORY MANIFOLD - Receives air pressure from the pressure protection valve and distributes it to the
various accessories.
F
FRONT-WHEEL DRIVE LOCK-IN SWITCH - Air-actuated switch that engages front-wheel drive when transfer
case is in HIGH.
G
WINDSHIELD WASHER NOZZLES - Direct washer fluid on windshield.
H
GOVERNOR - Serves as a tee between accessory manifold and horn relay valve. It also signals the air
compressor to stop compressing air for the supply system when operating pressure has been reached.
I
TRANSFER CASE AIR SHIFT CYLINDER - Engages front-wheel drive when it receives air pressure from lock-in
switch or engagement control valve.
J
FRONT AXLE ENGAGEMENT CONTROL VALVE - Operates off cam on transfer case shift linkage so front-
wheel drive engages automatically when transfer case is put into LOW.
K
HORN RELAY VALVE - Electrical signal from horn button on steering wheel opens valve in horn relay, allowing air
pressure to sound horns.
L
HORNS - Receive air pressure from horn relay valve to sound off.
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