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 TM 9-2320-285-24-1
2-72.
AIR HORN MAINTENANCE (CONT)
STEP
LOCATION
ITEM
ACTION
REMARKS
CLEANING (cont)
5
b. Valve (8)
Clean
Wipe exterior only with clean
(cont)
cloth moistened with clean-
ing solvent P-D-680; dry
with compressed air
c. Screens (24)
Clean
Use cleaning solvent P-D-680;
and all other
dry using compressed air or
parts
clean cloths
INSPECTION
6
a. Tubing (1)
Inspect
Replace if cracked twisted
split or kinked
b. Springs (31)
Inspect
Replace if cracked broken
or permanently set
c. Covers (29) and
Inspect
Replace if cracked or if
body (34)
diaphragm seat is chipped
or otherwise damaged
d. Diaphragms (32)
Inspect
Replace if cracked distorted
or deteriorated
e. All other parts
Inspect
Replace if cracked bent
broken excessively worn
or threads damaged
REASSEMBLY
7
Body (34)
a. Coupling (33)
Install
Wrap threads at long end with
Teflon tape; turn clockwise
to tighten
b. Two diaphragms
Position
In body (34)
(32)
c. Two springs
Position
In covers (29)
(31) and
contacts (30)
d. Two covers (29)
Position
On body with mounting holes
aligned
e. Eight screws
Install
Tighten screws (27) evenly
(27) and lock
washers (28)
f. Two seat assem-
Install
Turn clockwise
blies (26)
g. Two locknuts
Install
Do not tighten
(25)
h. Two screens
Install
Press into bells (22 and 23)
(24)
i. Bells (22 and
Install
Turn clockwise
23)
2-810
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