DRAWBAR WILL NOT RAISE OR REMAIN RAISED. (Cont) -725550523

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

cause personal injury. Care should be exercised when disconnecting an air hose that is thought to be

under pressure.

PRESSURE TEST

(1) Lower air bag control lever to

down position (Para 2-9).

(2) Disconnect air hose 2226 from air

bag inversion valve.

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

pressure gage to air hose 2226.

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

(5) Push in trailer charge valve in truck

(6) While assistant raises air bag

control lever to up position, observe

pressure gage.

(a) If pressure does not raise to 125

5 psi (862 34 kPa), perform

Steps (7) through (11) below and

replace control valve

(b) If pressure raises to 125 5

psi (862 34 kPa), control 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 2226 from

pressure gage.

(11) Connect air hose 2226 to

inversion valve.