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Page Title:
DRAWBAR WILL NOT RAISE OR REMAIN RAISED. (Cont) |
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 TM 9-2330-385-14
4. DRAWBAR WILL NOT RAISE OR REMAIN RAISED (CONT).
7.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
Truck air system OK.
Pressure test.
on Page 4-237
Drawbar frame OK.
Air lines, fittings, valves and
REASON FOR QUESTION
air bag free of leaks.
Does safety valve release at
Quick disconnect check
If safety valve fails open or
53-56 psi (365-386 kPa) or
valve OK.
releases at too low of pressure,
95-100 psi (655-689 kPa) if
Air reservoir 1 check
loss of air will prevent air bag
valve OK.
equipped with drawbar
from inflating.
Air bag control valve OK.
extension?
Inversion valve OK.
POSSIBLE PROBLEMS
Safety valve faulty.
Adjust safety valve
NO
Verify repair, go to
Step 8 of this Fault.
YES
8.
KNOWN INFO
TEST OPTIONS
Truck air system OK.
Verify repair.
Does drawbar raise and
Drawbar frame OK.
Air lines, fittings, valves, and
remain raised?
REASON FOR QUESTION
air bag free of leaks.
Quick disconnect check
If drawbar raises and remains
valve OK.
raised, fault has been corrected.
Air reservoir 1 check
valve OK.
Air bag control valve OK.
Inversion valve OK.
Safety valve OK.
POSSIBLE PROBLEMS
Fault not corrected.
NO
Notify supervisor.
YES
Fault corrected.
4-236
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