Chrysler 1998 Voyager Service Manual page 158

5 - 76 BRAKES
DISASSEMBLY AND ASSEMBLY (Continued)
Fig. 192 Installing Dust Boot In Caliper Counterbore
MUST always be used when installing brake
hose to caliper.
(12) Bleed the brake system (see Bleeding Brake
System).
WHEEL CYLINDER REAR DRUM BRAKE
DISASSEMBLE
To disassemble the wheel cylinders, proceed as fol-
lows:
(1) Pry boots away from cylinders and remove (Fig.
193).
(2) Press IN on one piston to force out opposite
piston, cup and spring (Fig. 193). Then using a soft
tool such as a dowel rod, press out the cup and piston
that remain in the wheel cylinder.
(3) Wash wheel cylinder, pistons, and spring (Fig.
193) in clean brake fluid or alcohol; (DO NOT USE
ANY PETROLEUM BASE SOLVENTS) clean thor-
oughly and blow dry with compressed air. Inspect cyl-
inder bore and piston for scoring and pitting. (Do not
use a rag as lint from the rag will stick to bore sur-
faces.)
(4) Wheel cylinder bores and pistons that are
badly scored or pitted should be replaced. Cylinder
walls that have light scratches, or show signs of cor-
rosion, can usually be cleaned with crocus cloth,
using a circular motion. Black stains on the cylinder
walls are caused by piston cups and will not impair
operation of cylinder.
ASSEMBLE
Before assembling the pistons and new cups in the
wheel cylinders, dip them in clean brake fluid. If the
boots are deteriorated, cracked or do not fit tightly on
the pistons or the cylinder casting, install new boots.
(1) Coat cylinder bore with clean brake fluid.
(2) Lightly coat the sealing lip and outer surfaces
of the wheel cylinder cups with only Mopar Pro-
tect-A-Cup Lubricant p/n 04883068 and no sub-
stitute.
(3) Install expansion spring with cup expanders in
cylinder. Install cups in each end of cylinder with
open end of cups facing each other (Fig. 193).
(4) Install piston in each end of cylinder having
the flat face of each piston contacting the flat face of
each cup, already installed (Fig. 193).
(5) Install a boot over each end of cylinder (Fig.
193). Be careful not to damage boot during
installation.
CLEANING AND INSPECTION
FRONT DISC BRAKE PAD LINING INSPECTION
If a visual inspection does not adequately deter-
mine the condition of the lining, a physical check will
be necessary. To check the amount of lining wear,
remove the wheel and tire assemblies, and the cali-
pers.
Remove the shoe and lining assemblies. (See Brake
Shoe Removal).
Combined shoe and lining thickness should be
measured at the thinnest part of the brake shoe
assembly.
When a shoe and lining assembly is worn to a
thickness of approximately 7.95 mm (0.313 inch) it
should be replaced.
Replace both shoe assemblies (inboard and out-
board) on the front wheels. It is also necessary that
both front wheel brake shoe assembly sets be
replaced, whenever shoe assemblies on either side of
the vehicle require replacement.
If a shoe assembly does not require replacement,
reinstall it, making sure each shoe assembly is
returned to its original position. (See Brake Shoe
Installation).
REAR DISC BRAKES
BRAKE PAD LINING WEAR
If a visual inspection does not adequately deter-
mine the condition of the lining, a physical check will
be necessary. To check the amount of lining wear,
remove the wheel and tire assemblies, and the cali-
pers.
Remove the rear disc brake shoes. Refer to Rear
Disc Brake Shoe Removal in the Removal And Instal-
NS