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TM 9-2320-364-20-3
2-2224
Tighten loose
fittings, replace or
repair hoses
(Para 12-36
and schematic
Fig 2-51). Verify
repair, go to Step 3
of this Fault.
6. AIR HORN WILL NOT OPERATE (CONT).
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Verify repair.
If air horn operates, fault has
been corrected.
NO
Fault not corrected.
Notify DS
Maintenance.
3.
Does air horn operate?
Fault corrected.
2.
YES
NO
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Visual inspection.
If any one of the air hoses and
fittings are faulty, air horn will
not operate.
Are air hoses 2037, 2039, and
fittings free of leaks, crimps,
or damage?
YES
Air system OK.
Windshield washer
working indicating air
pressure present at four
position solenoid valve.
Air horn valve is OK.
Air hose and/or fittings are faulty.
Air system OK.
Windshield washer
working indicating air
pressure present at four
position solenoid valve.
Air horn valve is faulty.
Air hose and/or fittings are OK.
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