TM 9-2320-273-20
AUXILIARY AIR-POWERED COMPONENT SYSTEMS.
9-45. AIR HORN AND CONTROL VALVE MAINTENANCE (Continued).
LOCATION/lTEM
ACTION
REMARKS
Do not remove valve (14) until pressure is
fully exhausted from all reservoirs.
NOTE
For access to horns and valve remove head-
liner screws and pull down headliner as
necessary.
1. Screw (10) and washer (11).
Unscrew and remove one
end of chain (12).
2. Chain (12).
Disconnect from handle on
Use pliers to open S-hook.
valve (14) by slightly open-
ing S-hook (13).
3. Supply line (18).
Unscrew from fitting (15).
4. Fitting (15).
Unscrew from valve (14).
5. Valve (14).
Unscrew from horn inlet (8).
6. Horn inlet (8).
Unscrew from tee (4).
7. Line (6).
Unscrew from connector (5)
and elbow (7).
8. Connector (5).
Unscrew from tee (4).
9. Plug (9).
Unscrew from tee (4).
10. Tee (4).
Unscrew from left hand
horn (24).
11. Elbow (7).
Unscrew from right hand
horn (24).
12. Six screws (22),
Unscrew and remove two
M917 has only one horn located
washers (17), and
horns (24), pedestals (20),
on left hand side.
nuts (16).
gaskets (23), gaskets (19),
and rubber liners (21 ).
13. Four screws (1) and
Unscrew and remove two
M917 only.
nuts (3).
plate covers (2), washers
(25), and washer (26).
M917 only.
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9-200
