
INSPECTION OF PARTS (CONTINUED)
14
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FF
F
igurigur
igurigur
igur
e 1e 1
e 1e 1
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00
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0
TRANSIT BRAKE (CAST SHOE ONLY) DRUM/
LINING CROSS REFERENCE CHART
1.1.
1.1.
1. When installing new drums always use standard
thickness lining. If used drums are rebored care-
fully measure inside diameter (in several places) of
rebored drum.
LINING MAXIMUM THICKNESS (IN) DRUM DIA. (IN) AT RELINE
.867” (Standard Thickness)
.927” (1X Oversize)
.987” (Premium Thickness)
16.500”- New
16.620”
Over 16.620”
CA CA
CA CA
CA
UTION:UTION:
UTION:UTION:
UTION:
NeNe
NeNe
Ne
vv
vv
v
er shim brer shim br
er shim brer shim br
er shim br
akak
akak
ak
e linings. See pagee linings. See page
e linings. See pagee linings. See page
e linings. See page
22
22
2
1, R1, R
1, R1, R
1, R
eline Preline Pr
eline Preline Pr
eline Pr
ocedurocedur
ocedurocedur
ocedur
e, for more, for mor
e, for more, for mor
e, for mor
e dee de
e dee de
e de
tt
tt
t
ail.ail.
ail.ail.
ail.
2.2.
2.2.
2. Refer to the chart below for proper oversized lining
required based on drum measurements.
SHOES AND LINING
CAST SHOE TYPE
1.1.
1.1.
1. Check shoes for cracks and elongated bolt holes.
2.2.
2.2.
2. Measure the shoe span by loosely installing the
anchor pin and cam roller in the appropriate ends
of the shoe rib. If the distance from center of
anchor pin to center of cam roller exceeds 12.76
inches replace shoe.
3.3.
3.3.
3. Check linings, replace when any of the following
conditions exist.
A. Total lining thickness at thinnest point is .31” or
less than 1/16” above screw head. Also, if the
material is worn beyond the wear groove on the
side of the lining.
B.B.
B.B.
B. Linings are cracked or worn in an unusual or
odd pattern. For example: lining wear tapered
from side to side across the shoe table. Un
usual wear pattern can indicate damage to
foundation brake parts.
C.C.
C.C.
C. Screw holes are elongated.
D.D.
D.D.
D. Lining is oil soaked.
E.E.
E.E.
E. Lining can be moved by hand. (loose bolts)
CA CA
CA CA
CA
UTION:UTION:
UTION:UTION:
UTION:
Drums displaDrums displa
Drums displaDrums displa
Drums displa
ying heaying hea
ying heaying hea
ying hea
t checks witht checks with
t checks witht checks with
t checks with
a contina contin
a contina contin
a contin
uous length of four incheuous length of four inche
uous length of four incheuous length of four inche
uous length of four inche
s or mors or mor
s or mors or mor
s or mor
e ande and
e ande and
e and
ee
ee
e
xtxt
xtxt
xt
end arend ar
end arend ar
end ar
ound the edge of the drum should beound the edge of the drum should be
ound the edge of the drum should beound the edge of the drum should be
ound the edge of the drum should be
rr
rr
r
eplaced. eplaced.
eplaced. eplaced.
eplaced.
See FSee F
See FSee F
See F
igurigur
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igur
e 1e 1
e 1e 1
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0.0.
0.0.
0.
BRAKE DRUMS
1.1.
1.1.
1. Inspect drums for cracks, heat checking, glazing,
grooving, severe out-of-round condition or bell
mouthing
mm
mm
m
ust noust no
ust noust no
ust no
t et e
t et e
t e
xx
xx
x
ceed .0ceed .0
ceed .0ceed .0
ceed .0
22
22
2
5 T5 T
5 T5 T
5 T
.I.R. (T.I.R. (T
.I.R. (T.I.R. (T
.I.R. (T
oo
oo
o
tt
tt
t
alal
alal
al
IndicaIndica
IndicaIndica
Indica
tt
tt
t
or Ror R
or Ror R
or R
eading) eading)
eading) eading)
eading) Replace any drums that are
cracked. The drum should not be used if it exceeds
the manufacturer’s recommended maximum
diameter stamped on the drum.
2.2.
2.2.
2. Measure the drum I.D. to be sure the maximum limit
allowed (stamped on drum) has not been exceeded
due to wear or machining.
CAUTION: Maximum discard
diameter is 16.750”
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