TM-9-2330-238-14

CHASSIS, SEMITRAILER: 6-TON, 4-WHEEL M295A1; SEMITRAILER, VAN: EXPANSIBLE, 6-TON, 4-WHEEL M313; SEMITRAILER, VAN: SHOP, FOLDING SIDES, 6-TON, 4-WHEEL M447 AND M447C; SEMITRAILER, VAN: REPAIR PARTS, SHOP EQUIPMENT, 6-TON, 4-WHEEL M749; SEMITRAILER, VAN: REPAIR PARTS STORAGE, 6-TON, 4-WHEEL M750

TECHNICAL MANUAL; OPERATOR’S, ORGANIZATIONAL, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL

JULY 1992

TM-9-2330-238-14 - Page 170 of 462

TM 9-2330-238-14

4-36. PUSHROD TRAVEL TEST AND BRAKE ADJUSTMENT (Con’t).

b.

BRAKE ADJUSTMENT

1.

2.

3.

4.

5.

6.

7.

8.

9.

Uncouple semitrailer from towing vehicle (para 2-11).

Open draincock on air reservoir and release air pressure.

Raise rear of semitrailer with jack until tires clear the ground

NOTE

Support semitrailer with jackstands.

Try to laterally rock wheel, hub, and brakedrum assembly on axle spindle. If rocking

condition exists, perform step 4. If not, go to step 5.

Check wheel bearing adjustment (para 4-48).

Turn brakeshoe adjusting screw (5) clockwise,

until front brake lining contacts brakedrum and

wheel drags slightly when turned by hand.

Back off adjusting screw (5) just enough until

wheel rotates freely.

Repeat steps 5 and 6 for adjusting screw (5) and

rear brake lining.

Repeat steps 4 through 7 on all other wheels.

Make both adjustments at each wheel as uniform

as possible.

Close draincock on air reservoir. Raise semitrailer,

remove jackstands, and lower semitrailer to the

ground.

FOLLOW-ON TASKS:

●

Couple semitrailer to towing vehicle (para 2-10).

TA701976

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