TM 9-2330-356-14
Section III. BRAKES AND BRAKE SYSTEM COMPONENTS
to shoe clearance is excessive if gage can be inserted
Brake Shoes (Fig. 6-3)
between shoe and lining.
a.
Disassembly.
WARNING
Due to asbestos hazard, do not grind off rivet
heads. Failure to follow this warning may re-
sult in injury or death to personnel.
(1) Punch rivets out from back side of shoe using
a hammer and a drift or punch.
(2) Remove linings from brake shoes.
b.
Inspection and Repair.
(1) Oil or grease saturated linings are not
reusable. Saturated linings indicate leakage in the axle
shaft seals.
(2) Grooving or uneven wear in brake linings in-
dicates a need for refacing or replacement of brake drum.
Brake Drums
(3) Inspect brake shoe for distortion, cracks or
damage. Replace the brake shoe if these conditions are
a.
found. Lining and shoe contact surfaces should be clean
and smooth.
b.
Reboring of Brake Drums.
(4) Use new rivets of the correct body diameter,
(1) Reboring is not recommended due to reduced
head size and shape, length, and material.
strength of refaced drums. If it is necessary to rebore a
drum, remove as little metal as necessary to true the
c.
Assembly.
friction surface.
NOTE
(2) If reboring requires removal of more than
Do not use combination linings.
1/16-inch of material, replace the drum.
(1) Make sure lining and shoe contact surfaces
c.
are clean.
Brake Air Chamber M867, M969, and
M970 except M970 SN TC-0843, TC-0844, and TC-
(2) Clamp lining to brake shoe with C-clamps
103 thru T -178) (Standard) (Fig. 6-4).
with rivet holes in both pieces alined.
a.
(3) Drive the rivets squarely into the holes with a
7/16-inch flat head drift.
Disassembly.
b.
(4) Position the C-clamps as close to the rivet
(1) Remove nut (2) and bolt (1) from clamp ring
holes as possible and make certain the lining is tight
(3). Spread the clamp ring and remove it from the air
against the shoe.
chamber.
(5) Working from heel to toe of brake shoe, form
(2) Hold diaphragm (5) to non-pressure housing
the rivet heads with the correct tubular rivet set. Follow
(8) and remove pressure housing (4).
the order shown in figure 6-3.
(6) Check lining installation with a 0.002-inch
(3) Carefully remove the diaphragm (5) from the
non-pressure housing (8).
feeler gage to ensure that lining and shoe contact. Lining
Change 3
