TM-9-2330-247-14-P

CHASSIS, TRAILER: GENERAL PURPOSE, 3-1/2 TON, 2-WHEEL, M353

TECHNICAL MANUAL; OPERATOR’S, ORGANIZATIONAL, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL (INCLUDING REPAIR PARTS AND SPECIAL TOOLS LISTS)

MARCH 1992

TM-9-2330-247-14-P - Page 110 of 320

TM 9-2330-247-14&P

4-31.

SERVICE BRAKE

This Task Covers:

Adjustment

Initial Setup:

Equipment Conditions:

Tools/Test Equipment:

“ Pressure tank drained (para 3-9).

l Jack, hydraulic, hand, 10 ton

l Handbrake lever released on wheel to be adjusted

l Trestle, motor vehicle, 10 ton

(para 2-10).

l Wrench, open-end, % in.

ACTION

LOCATION

ITEM

REMARKS

ADJUSTMENT

NOTE

To ensure that adjustment is correct, do not adjust

brakeshoes when brakedrums are hot.

1.

Frame (2)

2.

Backing plate

(1)

Axle (5)

a. Using jack placed under axle (5), raise trailer so

wheel (4) turns freely.

b. Place trestle under rear corner of frame (2).

Upper adjusting

a. Using% in. open-end wrench, turn upper adjust-

stud (6) and

ing stud (6) clockwise ~ turn.

wheel (4)

b. Spin the wheel (4).

c. Repeat steps 2a and 2b until brakes drag

slightly.

d. Using% in. open-end wrench, turn upper adjust-

ing stud (6) just enough so wheel (4) turns freely.

e. Repeat steps 2a through 2d for lower adjusting

stud (3).

f. Repeat steps 1 through 2e for other wheel (4).

4-56