DRAWBAR WILL NOT RAISE OR REMAIN RAISED. (Cont) -725550525

TM 9-2330-385-14

If air lines are disconnected while under 90 to 125 psi (621-862 kPa), they can whip around and cause

injury or death to personnel. Air system should be drained and air bag control valve set in center position

before air bag air lines are disconnected.

PRESSURE TEST

(1) Move air bag control lever in the

down position (Para 2-9).

(2) Disconnect air hose 2224 from

safety valve.

(3) Connect 0 to 160 psi (1103 kPa)

pressure gage to air hose 2224.

(4) Start engine (TM 9-2320-364-10).

(5) Push in trailer charge valve in

SAFETY

truck (Para 2-22).

0-160 PSI

VALVE

(6) While assistant raises air bag

GAGE

control lever to up position, observe

pressure gage.

(a) If 1255 psi (86234 kPa) is

not measured, perform Steps (7)

through (11) below and replace

inversion valve (Para 4-49).

(b) If 1255 psi (86234 kPa) is

measured, inversion valve is OK.

(7) Pull out trailer charge valve in truck.

(8) Turn OFF ENGINE switch.

(9) Lower air bag control lever to

down position.

(10) Disconnect air hose 2224 from

pressure gage.

AIR

(11) Connect air hose 2224 to

BAG

safety valve.

AIR LINE

2224

4-235