Quantcast DRAWBAR WILL NOT RAISE OR REMAIN RAISED. (Cont) -725550519

 

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DRAWBAR WILL NOT RAISE OR REMAIN RAISED. (Cont) -725550518
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TM-9-2330-385-14 Palletized Load System Trailer (PLST) Model M1076 Manual
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DRAWBAR WILL NOT RAISE OR REMAIN RAISED. (Cont) -725550520
TM 9-2330-385-14
If air lines are disconnected when they are under 125 5 psi (862 34 kPa), they can whip around and
S
cause personal injury. Care should be exercised when disconnecting an air hose that is thought to be
under pressure.
Remain clear of draw bar when it is raised. If draw bar falls it will cause injury or death to personnel.
S
NOTE
Air lines and valves listed in this
troubleshooting procedure are illustrated and
located in FO-2.
VISUAL INSPECTION
(1) Start engine (TM 9-2320-364-10).
(2) Push in trailer charge valve in truck
(3) Raise air bag control lever up.
(4) Listen for leaks on following air lines
and components: air lines 2228,
2226, 2224, fittings, air bag control
valve, inversion valve, safety valve
and air bag.
(a) If fittings leak and are loose,
tighten fittings.
(b) If air hose(s) leak, repair or
replace air hose(s) (see schematic
(c) If any of components listed above
leak, replace them according to
maintenance procedures
(d) If all of the Items above are OK,
perform Steps (5) through (7)
below and go to Step 3 of
this Fault.
(5) Lower air bag control lever to center
position.
(6) Pull out trailer charge valve in truck.
(7) Turn OFF ENGINE switch.
PRESSURE TEST
(1) Drain trailer air system (Para 2-21).
(2) Disconnect hose 2229 from air
reservoir 1.
(3) Connect 0 to 160 psi (1103 kPa) gage
to air hose 2229.
(4) Start engine (TM 9-2320-364-10).
(5) While assistant pushes in trailer
charge valve in truck (Para 2-22),
observe pressure gage.
(a) If pressure does not raise to 125
5 psi (862 34 kPa), perform
Steps (6) through (9) below and
replace check valve (Para 4-45).
(b) If pressure does raise to 125
5 psi (862 34 kPa), check
valve is OK.
(6) Pull out trailer charge valve in truck.
(7) Turn OFF ENGINE switch.
(8) Disconnect gage from hose 2229.
(9) Connect hose 2229 to air
reservoir 1.

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