TM 9-2320-273-20
AUXILIARY AIR-POWERED COMPONENT SYSTEMS.
9-45. AIR HORN AND CONTROL VALVE MAINTENANCE (Continued).
LOCATION/lTEM
ACTION
REMARKS
26. Chain (12).
27. Engine.
28. Chain (12).
29. Valve (14).
30. Engine.
Secure other end to cab roof
with screw (10) and washer
(11).
Start up (see TM 9-2320-
273-10). Allow system to reach
operating pressure of 105-120
psi (724-827 kPa).
a. Pull.
b. Release.
Check for leaks with soap
and water solution.
Shut down (see TM 9-2320-
273-10).
Horn should
Horn should
Retighten as
NOTE
Reposition headliner, if lowered, and secure
with screws and trim washers.
blow.
stop blowing.
necessary.
9-204
