TM9-2330-368-14 & P
g. Install anchor end lining (4) in same way
(steps c through f).
h. Repeat steps c through g for remaining
brake shoes.
i. Check shoes against drum for contact.
Brake shoes must have 80 percent contact
between lining and drum surface. It is
necessary that the contact be in the middle
of the lining surface and continuous.
WARNING
Asbestos dust is dangerous to your
health. Wear respirator to avoid in-
haling dust.
If lining to drum surface contact is not 80
j.
percent, the shoes should be circle ground
to comply.
5-5. TURNING DRUMS
Materials/Tools
Cleaning compound (item 1, app E)
Wiping rag (item 10, app E)
Brake drum lathe
a. Clean brake drum with cleaning compound
to remove dirt and grease.
b. Inspect the brake drum for warpage, cracks,
scored braking surface, and out-of-round
condition. If inspection shows the brake
drum to be in unsatisfactory condition,
refinish the brake drum in the following
manner:
e. Install brake drum on lathe; and refinish
c. Measure the inside diameter of the brake
surface, taking off as little of the metal as
drum. New brake drums measure 16.490 to
possible to true the surface. If refinishing
16.510 inches. Brake drums should be re-
requires removal of more than 0.070 inch
finished if scoring or run-out exceeds 0.006
of metal (0.140 inch in diameter), replace
inch.
the brake drum.
d. Brake drums having an inside diameter
f. Finish inside diameter to 200 microinches.
larger than 16.650 inches must be replaced.
5-3
