TM 9-2320-283-20-1
PRINCIPLES OF OPERATION.
1-21.
AUXILIARY AIR-POWERED SYSTEMS.
b.
Air Horn
AIR HORN.
Air-powered signaling device.
LEVER.
Actuates control valve when pulling chain in cab downward.
CONTROL VALVE.
Allows compressed air to flow to horn when lever is pulled downward.
TA 236800
1-84