PARKING BRAKES ON ALL AXLES DO NOT APPLY, OR APPLY SLOWLY. (Cont) -725550555

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.

MULTIFUNCTION VALVE TEST

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

(2) Pull out trailer charge valve in truck

and charge trailer air system

(3) While assistant pushes in trailer

charge valve, listen for air to exhaust

from multifunction valve.

(a) If air does not escape from

multifunction valve, perform

Step (4) below and replace valve

(b) If air escapes from multifunction

valve, multifunction valve is OK.

(4) Turn OFF ENGINE switch.

VERIFY REPAIR

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

(2) Push in trailer charge valve in truck

(3) While assistant pulls out trailer charge

valve in truck, observe operation of

brakes chamber rod(s).

(a) If brakes do not operate correctly,

fault not corrected. Perform

Steps (4) and (5) below and notify

DS Maintenance.

(b) If brakes operate correctly,

fault corrected.

(4) Push in trailer charge valve in truck.

(5) Turn OFF ENGINE switch.