TM-9-2320-283-34-2

TRUCK TRACTOR, LINE HAUL, 50,000 GVWR, 6X4, MQ15A1

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE

DECEMBER 1983

TM-9-2320-283-34-2 - Page 244 of 570

TM 9-2320-283-34-2

WHEELS.

3-88. BRAKEDRUM REPAIR (Continued).

LOCATION/ITEM

ACTION

REMARKS

NOTE

This procedure describes the methods

used to repair defects to the brake

lining contact surface.

Before you

start, measure the inside diameter to

determine the maximum amount of mac-

hining that can be done. The diameter

at time of manufacture was 16.500

inches.

The total amount of actual

wear allowed before replacement is

0.120 inches.

The maximum amount that

can be machined is 0.080 inches.

1. Polished braking

surface (1).

Sand with 80 grit emery

cloth to remove gloss

This is recognized by

mirror-like finish on

like finish.

the braking surface.

CAUTION

Do not exceed

allowable machining

limits.

2. Heat spots (2).

Using brakedrum lathe,

scoring (3), cracks machine surface until defect

Only machine to the

(4), and out-of-

extent required to

is removed.

remove defect.

round (5).