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BRAKES
5 - 45
A l w a y s replace t h e d r u m i f m a c h i n i n g w o u l d cause
d r u m diameter to exceed indicated size l i m i t .
Fig. 8 Location Of Brake Drum Maximum Allowable
Diameter
BRAKE
DRUM
RUNOUT
Measure d r u m diameter and r u n o u t w i t h a n accu-
r a t e gauge. T h e most accurate method o f measure-
m e n t involves m o u n t i n g the d r u m i n a brake lathe
a n d checking v a r i a t i o n and r u n o u t w i t h a d i a l i n d i -
cator. V a r i a t i o n s i n d r u m diameter should not exceed
.076 m m (.003 inch). D r u m r u n o u t should not exceed
.20 m m (.008 i n ) out of r o u n d . Refinish the d r u m i f
r u n o u t or v a r i a t i o n exceed these values.
BRAKE DRUM INSTALLATION
(1) Clean d r u m w i t h Mopar brake cleaning solvent
or w i t h a soap a n d water solution only. Do not use
any other cleaning agents.
(2) Adjust brake shoes to d r u m w i t h a brake gauge.
(3) I n s t a l l a n d secure d r u m t o wheel studs w i t h
new r e t a i n i n g nuts/clips.
(4) I n s t a l l rubber access plugs i n support plate i f
removed.
(5) I n s t a l l wheel and t i r e .
BRAKE SUPPORT PLATE REMOVAL
(1) Remove wheel and t i r e a n d b r a k e d r u m .
(2) Remove axle shaft and retainer. Refer to Group
3 for procedures.
(3) Remove p r i m a r y brakeshoe for access to park-
i n g brake cable i f necessary.
(4) Compress p a r k i n g brake cable retainer tabs
w i t h a hose clamp (Fig. 9). T h e n push retainer a n d
cable t h r o u g h a n d out o f support plate.
Fig. 9 Removing Parking Brake Cable From Support
Plate
(5) Disconnect brake l i n e a t wheel cylinder.
(6) Remove wheel cylinder a n d brakeshoes
f r o m
support plate.
(7) Remove bolts a t t a c h i n g support plate t o axle
and remove support plate.
BRAKE SUPPORT PLATE INSTALLATION
(1) I f new support plate i s being installed, apply
bead o f silicone sealer around wheel cylinder m o u n t -
i n g surface. T h e n transfer wheel cylinder to new sup-
port plate.
(2)
A p p l y
bead
of silicone
sealer around
axle
m o u n t i n g surface o f support plate.
(3) I n s t a l l support plate on axle flange. T i g h t e n at-
taching bolts t o 25-60 ft-lbs.
(4) I n s t a l l p a r k i n g brake cable i n support plate.
(5) I n s t a l l axle shaft and retainer.
(6) S t a r t b r a k e l i n e i n wheel cylinder and i n s t a l l
cylinder on support plate. T i g h t e n brakeline f i t t i n g
after cylinder i n s t a l l a t i o n .
(7) Connect p a r k i n g brake cable t o lever on second-
ary shoe and i n s t a l l brakeshoes o n support plate.
(8) Adjust brakeshoes to d r u m w i t h brake gauge.
(9) I n s t a l l brake d r u m and wheel and t i r e .
(10) Bleed brake system.
WHEEL CYLINDER REMOVAL
(1) Raise vehicle
a n d remove wheel a n d brake
d r u m .
(2) Disconnect wheel cylinder brakeline.
(3) Remove brakeshoe r e t u r n springs a n d move
shoes out of engagement w i t h cylinder push rods.
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