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TM 9-2330-385-14
If air lines are disconnected while under 90 to 125 psi (621-862 kPa), they can whip around and
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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.
Drawbar weighs 425 lbs (193 kg), (850 lbs (386 kg) with drawbar extension, if equipped). Drawbar
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may raise quickly or fall suddenly to the ground when released from coupler. Do not allow feet or
body to get under or above drawbar. Serious injury to personnel may result.
AIR BAG CONTROL VALVE
OPERATION TEST
(1) Move air bag control lever in the
down position.
(2) Disconnect air hose 2231 from relief
valve.
(3) Raise air bag control lever to
up position.
(4) While assistant lowers air bag control
lever to down position, listen to air
hose 2231.
(a) If air does not escape from air
hose 2231, perform Steps (5)
and (6) below and replace control
valve (Para 4-44).
(b) If air escapes from air hose
2231, perform Steps (5) and (6)
below and replace relief valve
(5) Raise air bag control lever to center
position.
(6) Connect air hose 2231 to relief valve.
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