PARKING BRAKES ON ALL AXLES DO NOT APPLY, OR APPLY SLOWLY. (Cont) -725550553

TM 9-2330-385-14

NOTE

Trailer air system pressure must be 5 psi

(862 34 kPa) to begin troubleshooting

the brake system. If the air system

pressure cannot be maintained, refer

to Air System Troubleshooting.

Air lines and valves listed in this

troubleshooting procedure are illustrated

and located in FO-2.

VISUAL INSPECTION

Inspect air lines 2254, 2620, and

fittings for crimps.

(1) If air hose(s) or fittings are

crimped, repair or replace air

hose(s) and fittings (see

and 4-47).

(2) If air lines and fittings are not

crimped, air lines and

fittings OK.

4-263