lock DODGE NEON 2000 Service User Guide

REMOVAL AND INSTALLATION
SERVICE WARNINGS AND CAUTIONS
WARNING: DO NOT REMOVE THE STRUT SHAFT
NUT WHILE STRUT ASSEMBLY IS INSTALLED IN
VEHICLE, OR BEFORE THE COIL SPRING IS COM-
PRESSED WITH A COMPRESSION TOOL. THE
SPRING IS HELD UNDER HIGH PRESSURE.
CAUTION: Only frame contact or wheel lift hoisting
equipment can be used on vehicles having a fully
independent rear suspension. Vehicles with inde-
pendent rear suspension can not be hoisted using
equipment designed to lift a vehicle by the rear
axle. If this type of hoisting equipment is used dam-
age to rear suspension components will occur.
NOTE: If a rear suspension component becomes
bent, damaged or fails, no attempt should be made
to straighten or repair it. Always replace it with a
new component.
STRUT ASSEMBLY (REAR)
NOTE: Before proceeding with this procedure,
review SERVICE WARNINGS AND CAUTIONS at the
beginning of REMOVAL AND INSTALLATION in this
section.
REMOVAL
(1) Raise the vehicle. Refer to HOISTING in the
LUBRICATION AND MAINTENANCE group for the
proper lifting procedure.
(2) Remove the rear wheel and tire assembly from
the vehicle.
(3) If the vehicle is equipped with rear drum
brakes, remove the screw securing the brake hose
bracket to the rear of the strut assembly (Fig. 5).
(4) If the vehicle is equipped with the antilock
brake system (ABS), remove the screw securing the
ABS wheel speed sensor bracket to the rear of the
strut assembly (Fig. 6).
(5) Remove the nut from the end of the rear stabi-
lizer bar link bolt (Fig. 5). Pull the bolt out through
the top of the link and remove the link.
(6) If the vehicle is equipped with rear disc brakes
(Fig. 7), perform the following:
²Remove the two guide pin bolts securing the
front disc brake caliper to the steering knuckle.
²Remove the disc brake caliper from the knuckle
and brake rotor.²Hang the caliper out of the way using a wire
hanger or cord. Do not support the caliper by letting
it hang by the hydraulic hose.
Fig. 5 Rear of Strut Assembly
1 ± BRAKE HOSE BRACKET SCREW
2 ± STABILIZER BAR LINK
3 ± NUT
4 ± STRUT ASSEMBLY
Fig. 6 Rear of Strut Assembly with ABS
1 ± ABS WHEEL SPEED SENSOR BRACKET SCREW
2 ± STABILIZER BAR LINK
3 ± NUT
4 ± STRUT ASSEMBLY
2 - 40 SUSPENSIONPL

²Place the link center sleeve and bushings
between the eye in the end of the stabilizer bar and
the link mounting bracket on the strut.
²Start the stabilizer bar link bolt with bushing
from the top, down through the stabilizer bar, inner
link bushings and sleeve, and strut link mounting
bracket.
²Install a lower bushing, then the nut. Do not
tighten the nut at this time.
(8) If the vehicle is equipped with the antilock
brake system (ABS), install the screw securing the
ABS wheel speed sensor bracket to the rear of the
strut assembly (Fig. 6). Tighten the mounting screw
to a torque of 13 N´m (120 in. lbs.).
(9) If the vehicle is equipped with rear drum
brakes, install the screw securing the brake hose
bracket to the rear of the strut assembly (Fig. 5).
Tighten the screw to a torque of 31 N´m (275 in. lbs.).
(10) Install the tire and wheel assembly on vehicle.
Tighten the wheel mounting stud nuts in proper
sequence until all nuts are torqued to half specifica-
tion. Repeat the tightening sequence, this time, to
full specified torque of 135 N´m (100 ft. lbs.).
(11) Lower the vehicle to ground level.
(12) Tighten the stabilizer bar link nut to a torque
of 23 N´m (200 in. lbs.).
(13) Set the rear toe on the vehicle to the required
specification if necessary. Refer to WHEEL ALIGN-
MENT in this service manual group.
KNUCKLE (REAR)
NOTE: Before proceeding with this procedure,
review SERVICE WARNINGS AND CAUTIONS at the
beginning of REMOVAL AND INSTALLATION in this
section.
REMOVAL
(1) Raise the vehicle. Refer to HOISTING in the
LUBRICATION AND MAINTENANCE group for the
proper lifting procedure.
(2) Remove the rear wheel and tire assembly from
the vehicle.
(3) If the vehicle is equipped with rear drum
brakes, remove the screw securing the brake hose
bracket to the rear of the strut assembly (Fig. 5).
(4) If the vehicle is equipped with the antilock
brake system (ABS), remove the screw securing the
ABS wheel speed sensor bracket to the rear of the
strut assembly (Fig. 6).
(5) If the vehicle is equipped with rear drum
brakes, remove any retainer clips from the wheel
mounting studs, then pull the brake drum off the
hub and bearing.
(6) If the vehicle is equipped with rear disc brakes
(Fig. 7), perform the following:²Remove the two guide pin bolts securing the
front disc brake caliper to the steering knuckle.
²Remove the disc brake caliper from the knuckle
and brake rotor.
²Hang the caliper out of the way using a wire
hanger or cord. Do not support the caliper by letting
it hang by the hydraulic hose.
²Remove any retainer clips from the wheel
mounting studs, then pull the brake rotor off the hub
and bearing.
(7) Remove the dust cap from the hub and bearing
assembly (Fig. 7).
(8) Remove the retaining nut, then the hub and
bearing from the knuckle's spindle (Fig. 7).
(9) If vehicle is equipped with rear drum brakes,
remove the four bolts attaching the rear brake sup-
port plate to the knuckle (Fig. 9). Next, remove the
brake support plate, brake shoes and wheel cylinder
as an assembly from the rear knuckle, then hang it
out of the way using a wire hanger or cord. Do not
overextend the brake hose when being hung. It is not
necessary to remove the brake hose from the wheel
cylinder when removing the support plate.
(10) If the vehicle is equipped with rear disc
brakes, remove the four bolts mounting the disc
brake adapter to the rear knuckle (Fig. 10). Next,
remove the adapter, rotor shield, parking brake shoes
and parking brake cable as an assembly from the
knuckle, then hang it out of the way using a wire
hanger or cord.Fig. 9 Support Plate Mounting
1 ± BRAKE SHOES
2 ± WHEEL CYLINDER
3 ± KNUCKLE
4 ± BRAKE SUPPORT PLATE MOUNTING BOLTS
5 ± BRAKE SUPPORT PLATE
2 - 42 SUSPENSIONPL
REMOVAL AND INSTALLATION (Continued)

the front side. Install the nut, but do not completely
tighten it at this time. The nut will need to be tight-
ened when the vehicle is at curb height.
(4) Install the rear bayonet bushing on the tension
strut. Be sure the stepped area of the bushing is
squarely seated into the hole in the knuckle.
(5) Install the rear tension strut retainer, then the
nut. To completely install the nut, place a wrench on
the flat formed into the tension strut and tighten the
nut (Fig. 12). Tighten the nut to a torque of 95 N´m
(70 ft. lbs.).
(6) If vehicle is equipped with rear drum brakes,
install the brake support plate on the knuckle and
attach it using it's four mounting bolts (Fig. 9).
Tighten the mounting bolts to a torque of 75 N´m (55
ft. lbs.).
(7) If the vehicle is equipped with rear disc brakes,
install the disc brake adapter on the knuckle and
attach it using it's four mounting bolts (Fig. 10).
Tighten the mounting bolts to a torque of 75 N´m (55
ft. lbs.).
(8) Install the hub and bearing on the knuckle's
spindle, then install a new retaining nut (Fig. 7). Do
not reuse the original nut. Tighten the nut to a
torque of 217 N´m (160 ft. lbs.).
(9) Install the dust cap on the end of the hub and
bearing (Fig. 7).
(10) If the vehicle is equipped with rear disc
brakes (Fig. 7), install the brake rotor and disc brake
caliper on the knuckle. Install the two guide pin bolts
securing the front disc brake caliper to the steering
knuckle. Tighten the guide pin bolts to a torque of 22
N´m (192 in. lbs.).
(11) If the vehicle is equipped with rear drum
brakes, install the screw securing the brake hose
bracket to the rear of the strut assembly (Fig. 5).
Tighten the screw to a torque of 31 N´m (275 in. lbs.).
(12) If the vehicle is equipped with the antilock
brake system (ABS), install the screw securing the
ABS wheel speed sensor bracket to the rear of the
strut assembly (Fig. 6). Tighten the mounting screw
to a torque of 13 N´m (120 in. lbs.).
(13) Install the tire and wheel assembly. Tighten
the wheel mounting nuts in proper sequence until all
nuts are torqued to half specification. Repeat the
tightening sequence, this time, to full specified
torque of 135 N´m (100 ft. lbs.).
(14) Lower the vehicle to ground level.
(15) Tighten the lateral arm-to-knuckle mounting
bolt nut to a torque of 95 N´m (70 ft. lbs.).
(16) Set the rear toe on the vehicle to the required
specification if necessary. Refer to WHEEL ALIGN-
MENT in this service manual group.HUB AND BEARING (REAR)
NOTE: Before proceeding with this procedure,
review SERVICE WARNINGS AND CAUTIONS at the
beginning of REMOVAL AND INSTALLATION in this
section.
REMOVAL
(1) Raise the vehicle. Refer to HOISTING in the
LUBRICATION AND MAINTENANCE group for the
proper lifting procedure.
(2) Remove the rear wheel and tire assembly from
the vehicle.
(3) If the vehicle is equipped with rear drum
brakes, remove any retainer clips from the wheel
mounting studs, then pull the brake drum off the
hub and bearing.
(4) If the vehicle is equipped with rear disc brakes
(Fig. 7), perform the following:
²Remove the two guide pin bolts securing the
front disc brake caliper to the steering knuckle.
²Remove the disc brake caliper from the knuckle
and brake rotor.
²Hang the caliper out of the way using a wire
hanger or cord. Do not support the caliper by letting
it hang by the hydraulic hose.
²Remove any retainer clips from the wheel
mounting studs, then pull the brake rotor off the hub
and bearing.
(5) Remove the dust cap from the hub and bearing
assembly (Fig. 7).
(6) Remove the retaining nut, then the hub and
bearing from the knuckle's spindle (Fig. 7).
INSTALLATION
(1) Install the hub and bearing on the knuckle's
spindle, then install a new retaining nut (Fig. 7). Do
not reuse the original nut. Tighten the nut to a
torque of 217 N´m (160 ft. lbs.).
(2) Install the dust cap on the end of the hub and
bearing (Fig. 7).
(3) If the vehicle is equipped with rear disc brakes
(Fig. 7), install the brake rotor and disc brake caliper
on the knuckle. Install the two guide pin bolts secur-
ing the front disc brake caliper to the steering
knuckle. Tighten the guide pin bolts to a torque of 22
N´m (192 in. lbs.).
(4) Install the tire and wheel assembly. Tighten
the wheel mounting nuts in proper sequence until all
nuts are torqued to half specification. Repeat the
tightening sequence, this time, to full specified
torque of 135 N´m (100 ft. lbs.).
(5) Lower the vehicle to ground level.
2 - 44 SUSPENSIONPL
REMOVAL AND INSTALLATION (Continued)

Driveshafts used on both the right and left sides of
the vehicle use a tuned rubber damper weight
mounted to the interconnecting shaft (Fig. 1). The
damper weight applications vary by which side of the
vehicle the driveshaft is located on and the transmis-
sion application of the vehicle. When replacing a
driveshaft, be sure the replacement driveshaft has
the same damper weight as the original.
Both driveshaft assemblies use the same type of
inner and outer joints. The inner joint of both drive-
shaft assemblies is a tripod joint, and the outer joint
of both driveshaft assemblies is a Rzeppa joint. Both
tripod joints and Rzeppa joints are true constant
velocity (C/V) joint assemblies. The inner tripod joint
allows for the changes in driveshaft length through
the jounce and rebound travel of the front suspen-
sion.
On vehicles equipped with ABS brakes, the outer
C/V joint is equipped with a tone wheel used to
determine vehicle speed for ABS brake operation.
The inner tripod joint of both driveshafts is splined
into the transaxle side gears. The inner tripod joints
are retained in the side gears of the transaxle using
a snap ring located in the stub shaft of the tripod
joint. The outer C/V joint has a stub shaft that is
splined into the wheel hub and retained by a single
piece steel hub nut (Fig. 2). The hub nut is a locking
style; the nut lock, anti-rattle washer, and cotter pin
are not necessary.NOTE: This vehicle does not use a rubber±lip bear-
ing seal as on previous front±wheel±drive cars to
prevent contamination of the front wheel bearing.
On these vehicles, the face of the outer C/V joint
fits deeply into the steering knuckle, using a close
outer C/V joint±to±steering knuckle fit. This design
deters direct water splash on bearing seal while
allowing any water that gets in, to run out the bot-
tom of the steering knuckle bearing bore. It is
important to thoroughly clean the outer C/V joint
and the wheel bearing area in the steering knuckle
before it is assembled after servicing.
DIAGNOSIS AND TESTING
DRIVESHAFT DIAGNOSIS
VEHICLE INSPECTION
(1) Check for grease in the vicinity of the inboard
tripod joint and outboard C/V joint; this is a sign of
inner or outer joint seal boot or seal boot clamp dam-
age.
(2) A light film of grease may appear on the right
inner tripod joint seal boot; this is considered normal
and should not require replacement of the seal boot.
The right inner tripod joint seal boot is made of sili-
cone rubber; which will allow the weeping (sweating)
of the joint lubricant to pass through it while in oper-
ation.
NOISE AND/OR VIBRATION IN TURNS
A clicking noise and/or a vibration in turns could
be caused by one of the following conditions.
(1) Damaged outer C/V or inner tripod joint seal
boot or seal boot clamps. This will result in the loss
and/or contamination of the joint grease, resulting in
inadequate lubrication of the joint.
(2) Noise may also be caused by another compo-
nent of the vehicle coming in contact with the drive-
shafts.
CLUNKING NOISE DURING ACCELERATION
This noise may be a result of one of the following
conditions:
(1) A torn seal boot on the inner or outer joint of
the driveshaft assembly.
(2) A loose or missing clamp on the inner or outer
joint of the driveshaft assembly.
(3) A damaged or worn driveshaft C/V joint.
Fig. 2 Driveshaft Retaining Nut
1 ± DRIVESHAFT
2 ± HUB
3 ± HUB NUT
3 - 2 DIFFERENTIAL AND DRIVELINEPL
DESCRIPTION AND OPERATION (Continued)

CAUTION: When venting the inner tripod joint
assembly, use care so inner tripod sealing boot
does not get punctured or, in any other way, dam-
aged. If sealing boot is punctured or damaged while
being vented, the sealing boot can not be used.
(9) Insert a trim stick between the tripod joint and
the sealing boot to vent inner tripod joint assembly
(Fig. 29).When inserting trim stick between tri-
pod housing and sealing boot, ensure trim stick
is held flat and firmly against the tripod hous-
ing. If this is not done, damage to the sealing
boot can occur.If inner tripod joint has a Hytrel
(hard plastic) sealing boot, be sure trim stick is
inserted between soft rubber insert and tripod hous-
ing, and not the hard plastic sealing boot and soft
rubber insert.
(10) With trim stick inserted between sealing boot
and tripod joint housing, position inner tripod joint
on driveshaft until correct sealing boot edge to edge
length is obtained for type of sealing boot material
being used (Fig. 30) (Fig. 31). Then remove the trim
stick.
(11) Clamp tripod joint sealing boot to tripod joint
using required procedure for type of boot clamp
application. If seal boot uses crimp type boot clamp,
clamp sealing boot onto tripod housing using crimper,
Special Tool C-4975-A. Place crimping tool C-4975-A
over bridge of clamp (Fig. 32). Tighten nut on crimp-
ing tool C-4975-A until jaws on tool are closed com-
pletely together, face±to±face (Fig. 33).(12) If seal boot uses low profile latching type boot
clamp, clamp sealing boot onto tripod housing using
clamp locking tool, Snap-OntYA3050 (or an equiva-
lent). Place prongs of clamp locking tool in the holes
of the clamp (Fig. 34). Squeeze tool together until top
band of clamp is latched behind the two tabs on
lower band of clamp (Fig. 35).
Fig. 29 Trim Stick Inserted for Venting Tripod Joint
1 ± INNER TRIPOD JOINT SEALING BOOT
2 ± SEALING BOOT CLAMP
3 ± INNER TRIPOD JOINT HOUSING
4 ± TRIM STICK
Fig. 30 Sealing Boot End to End Length with Hytrel
Boot
1 ± 107 MILLIMETERS
2 ± HYTREL SEALING BOOT
3 ± SEALING BOOT CLAMP
4 ± INNER TRIPOD JOINT
Fig. 31 Sealing Boot End to End Length with
Silicone Boot
1 ± 115 MILLIMETERS
2 ± SILICONE SEALING BOOT
3 ± CLAMP
4 ± INNER TRIPOD JOINT
3 - 12 DIFFERENTIAL AND DRIVELINEPL
DISASSEMBLY AND ASSEMBLY (Continued)

BRAKES
TABLE OF CONTENTS
page page
BASE BRAKE SYSTEM...................... 1ANTILOCK BRAKE SYSTEM................. 65
BASE BRAKE SYSTEM
TABLE OF CONTENTS
page page
DESCRIPTION AND OPERATION
BASE BRAKE SYSTEM OPERATION...........2
BASE BRAKE SYSTEM COMPONENTS.........2
DIAGNOSIS AND TESTING
BASE BRAKE SYSTEM DIAGNOSIS CHARTS....9
POWER BRAKE BOOSTER.................11
DRUM BRAKE AUTOMATIC ADJUSTER........12
BRAKE ROTOR..........................12
BRAKE DRUM...........................15
PROPORTIONING VALVE..................15
BRAKE FLUID CONTAMINATION.............17
SERVICE PROCEDURES
BRAKE FLUID LEVEL CHECKING............17
BASE BRAKE BLEEDING...................17
MASTER CYLINDER BLEEDING.............19
BRAKE TUBE REPAIR.....................19
BRAKE ROTOR MACHINING................21
BRAKE DRUM MACHINING.................22
PARKING BRAKE AUTOMATIC ADJUSTER
LOCK OUT............................22
REMOVAL AND INSTALLATION
SERVICE WARNINGS AND CAUTIONS........23
BRAKE PEDAL...........................24
BRAKE LAMP SWITCH....................27
MASTER CYLINDER......................28
BRAKE FLUID RESERVOIR.................29
BRAKE FLUID LEVEL SWITCH..............30
POWER BRAKE BOOSTER.................30
PROPORTIONING VALVE..................32
BRAKES TUBES AND HOSES...............33
DISC BRAKE CALIPER (FRONT).............33
DISC BRAKE SHOES (FRONT)..............35BRAKE ROTOR (FRONT)...................37
DISC BRAKE CALIPER (REAR)..............38
DISC BRAKE SHOES (REAR)...............39
BRAKE ROTOR (REAR)....................41
DRUM BRAKE WHEEL CYLINDER (REAR).....41
DRUM BRAKE SHOES (REAR)..............43
BRAKE DRUM (REAR).....................45
DRUM BRAKE SHOE SUPPORT PLATE
(REAR)...............................46
PARKING BRAKE LEVER...................48
PARKING BRAKE CABLE (REAR)............49
PARKING BRAKE SHOES (REAR DISC
BRAKE)...............................53
DISASSEMBLY AND ASSEMBLY
DISC BRAKE CALIPER (FRONT AND REAR)....55
CLEANING AND INSPECTION
BRAKE TUBES AND HOSES................59
DISC BRAKES (FRONT)....................59
DISC BRAKES (REAR).....................60
DRUM BRAKES (REAR)....................60
ADJUSTMENTS
BRAKE LAMP SWITCH....................61
DRUM BRAKE SHOES.....................61
PARKING BRAKE SHOES (REAR DISC
BRAKES).............................62
SPECIFICATIONS
BRAKE FLUID...........................63
BRAKE ACTUATION SYSTEM...............63
BRAKE FASTENER TORQUE
SPECIFICATIONS.......................63
SPECIAL TOOLS
BASE BRAKE SYSTEM....................64
PLBRAKES 5 - 1

DESCRIPTION AND OPERATION
BASE BRAKE SYSTEM OPERATION
When a vehicle needs to be stopped, the driver
applies the brake pedal. The brake pedal pushes the
input rod of the power brake booster into the booster.
The booster uses vacuum to ease pedal effort as force
is transferred through the booster to the master cyl-
inder. The booster's output rod pushes in the master
cylinder's primary and secondary pistons applying
hydraulic pressure through the chassis brake tubes
and proportioning valves (rear only) to the brakes at
each tire and wheel assembly.
Front disc brakes control the braking of the front
wheels; rear braking is controlled by rear drum
brakes as standard equipment. Rear disc brakes and
an antilock brake system (ABS) with traction control
are optional.
The hydraulic brake system is diagonally split on
both the non-antilock and antilock braking systems.
This means the left front and right rear brakes are
on one hydraulic circuit and the right front and left
rear are on the other.
Vehicles equipped with the optional antilock brake
system (ABS) use a system designated Mark 20e.
This system shares most base brake hardware used
on vehicles without ABS. A vehicle equipped with
ABS, however, uses a different master cylinder and
brake tubes. Also included in the ABS system is an
integrated control unit (ICU) and four wheel speed
sensors. These components are described in detail in
the ANTILOCK BRAKE SYSTEM section in this
group of the service manual. All vehicles with ABS
come standard with four-wheel-disc brakes and trac-
tion control.
The parking brakes are hand-operated. When
applied, the parking brake lever pulls on cables that
actuate brake shoes at each rear wheel. The parking
brake lever has an automatic adjusting feature that
takes up any excessive slack in the parking brake
cable system.
BASE BRAKE SYSTEM COMPONENTS
BRAKE PEDAL
A suspended-type brake pedal is used on this vehi-
cle. The pedal pivots on a shaft mounted in the pedal
support bracket under the instrument panel. The
pedal connects to the power brake booster input rod
and pushes it in when the pedal is applied.
The brake pedal and it's pad are serviceable sepa-
rately.
POWER BRAKE BOOSTER
There are two different power brake booster
designs, although externally they appear the same.
All vehicles use a 205 mm tandem diaphragm power
brake booster. The two boosters are internally tuned
differently depending on whether the vehicle is
equipped with the standard front disc/rear drum
brake combination or the optional front disc/rear disc
(four-wheel disc) brake combination. If the power
brake booster requires replacement, be sure it is
replaced with the correct part.
The power brake booster can be identified by the
tag attached to the body of the booster assembly (Fig.
1). This tag contains the following information: The
production part number of the power brake booster,
the date it was built and who manufactured it.
The power brake booster reduces the amount of
force required by the driver to obtain the necessary
hydraulic pressure to stop the vehicle.
The power brake booster is vacuum-operated. The
vacuum is supplied from the intake manifold on the
engine through the power brake booster check valve
(Fig. 2).
As the brake pedal is depressed, the power booster
input rod moves forward. This opens and closes
valves in the power brake booster, allowing atmo-
spheric pressure to enter on one side of a diaphragm.
Engine vacuum is always present on the other side.
This difference in pressure forces the output rod of
the power booster out against the primary piston of
the master cylinder. As the pistons in the master cyl-
inder move forward, hydraulic pressure is created in
the brake system.
Fig. 1 Master Cylinder and Power Brake Booster
1 ± POWER BRAKE BOOSTER PARTS IDENTIFICATION TAG
2 ± POWER BRAKE BOOSTER
3 ± BRAKE FLUID PRESSURE SWITCH
4 ± MASTER CYLINDER
5 - 2 BRAKESPL

The power brake vacuum booster assembly mounts
on the engine side of the dash panel. The booster
input push rod connects to the brake pedal. A vac-
uum line connects the power booster to the intake
manifold. The master cylinder is bolted to the front
of the power brake booster.
MASTER CYLINDER
The base brakes on a vehicle not equipped with
ABS use a standard compensating port master cylin-
der, while vehicles equipped with ABS use a center
valve design master cylinder. The information pro-
vided here applies only to the non-ABS master cylin-
der. For information on the master cylinder used on
vehicles with ABS, refer to the ANTILOCK BRAKE
SYSTEM section in this service manual group.
The non-ABS master cylinder is a four-outlet
design with two screw-in proportioning valves. One is
attached directly to the inboard side of the master
cylinder housing while the other is attached to the
bottom (Fig. 3). Vehicles equipped with rear drum
brakes use a master cylinder with a 22.23 mm (0.875
in.) bore diameter, while vehicles equipped with rear
disc brakes use a 23.82 mm (0.937 in.) bore diameter
master cylinder.
The master cylinder body is an anodized aluminum
casting. It has a machined bore to accept the master
cylinder piston and also has threaded ports with
seats for hydraulic brake line connections.
The master cylinder's primary outlet ports supply
hydraulic pressure to the right front and left rearbrakes while the secondary outlet ports supply
hydraulic pressure to the left front and right rear
brakes (Fig. 3).
BRAKE FLUID RESERVOIR
The master cylinder has the brake fluid reservoir
mounted on top of it which gravity feeds brake fluid
to the master cylinder when it is required. The res-
ervoir is made of see-through plastic and it houses
the brake fluid level switch.
BRAKE FLUID LEVEL SWITCH
The brake fluid level switch is located in the brake
fluid reservoir on the master cylinder (Fig. 1). It
senses the level of the brake fluid within the reser-
voir and when the level drops below an acceptable
level, the switch closes and completes the ground cir-
cuit for the red BRAKE warning lamp. This turns on
the red BRAKE warning lamp. For additional infor-
mation, refer to RED BRAKE WARNING LAMP also
in this section.
PROPORTIONING VALVE
NOTE: Only vehicles without antilock brakes have
proportioning valves. Vehicles with antilock brakes
have electronic brake distribution that is built into
the integrated control unit.
Fig. 2 Power Brake Booster
1 ± MOUNTING STUD
2 ± PARTS IDENTIFICATION TAG
3 ± MASTER CYLINDER MOUNTING STUDS
4 ± VACUUM CHECK VALVE
Fig. 3 Non-ABS Master Cylinder
1 ± RIGHT FRONT BRAKE TUBE
2 ± LEFT FRONT BRAKE TUBE
3 ± LEFT REAR BRAKE TUBE
4 ± REAR PROPORTIONING VALVES
5 ± RIGHT REAR BRAKE TUBE
PLBRAKES 5 - 3
DESCRIPTION AND OPERATION (Continued)

Proportioning valves balance front to rear braking
by controlling the brake fluid hydraulic pressure to
the rear brakes. Under light pedal application, the
proportioning valve allows normal fluid flow to the
rear brakes. Under higher pedal effort, the valve
reduces fluid pressure to the rear brakes.
The non-antilock master cylinder is a four-outlet
design with two screw-in proportioning valves
attached directly to the master cylinder housing (Fig.
3). One proportioning valve controls each rear brake.
BRAKE TUBES AND HOSES
The purpose of the brake tubes and flex hoses is to
transfer the pressurized brake fluid developed by the
master cylinder to the brakes at each wheel of the
vehicle. The flex hoses connect the chassis brake
tubes, which are mounted to the vehicle's underbody,
to the brake at each wheel, allowing for movement of
the vehicle's suspension. The brake tubes are steel
with a corrosion-resistant nylon coating applied to
the external surfaces. The flex hoses are made of
reinforced rubber.
DISC BRAKES (FRONT)
The front disc brakes consist of the following com-
ponents (Fig. 4):
²Brake caliper - single-piston, floating type
²Brake shoes and linings
²Brake rotorWhen the brakes are applied, fluid pressure is sent
to each brake caliper. The pressure at the caliper is
exerted equally against the caliper piston. The pres-
sure applied to the piston is transmitted directly to
the inboard brake shoe. This forces the shoe lining
against the inner surface of the brake rotor. At the
same time, fluid pressure within the caliper piston
bore forces the caliper to slide inward on its guide
pins. This action brings the outboard shoe lining into
contact with the outer surface of the brake rotor.
This pressure on both sides of the brake rotor causes
friction, bringing the vehicle to a stop.
BRAKE CALIPER
The caliper is a one-piece casting with the inboard
side containing a single piston cylinder bore (Fig. 5).
The front disc brake caliper piston, is manufac-
tured from a phenolic compound. The outside diame-
ter of the caliper piston is 54 mm.
A square-cut rubber piston seal is located in a
machined groove in the caliper cylinder bore. This
provides a hydraulic seal between the piston and the
cylinder wall (Fig. 6). The piston seal is designed to
pull the piston back into the bore of the caliper when
the brake pedal is released. This maintains the
proper brake shoe-to-rotor clearance.
A rubber dust boot is installed in the cylinder bore
opening and in a groove in the piston (Fig. 6). This
prevents contamination in the bore area.
The caliper is mounted to the steering knuckle
using bushings, sleeves and two guide pin bolts (Fig.
5). The guide pin bolts thread directly into bosses on
the steering knuckle.
Two machined abutments on the steering knuckle
position the caliper. The guide pin bolts, sleeves, and
bushings control the side-to-side movement of the
caliper. All of the front brake force generated during
braking of the vehicle is taken up directly by the
steering knuckles of the vehicle.
BRAKE SHOES AND LININGS
There are two brake shoes mounted to each caliper,
one inboard and one outboard (Fig. 5). When brake
shoes are replaced, only brake shoes meeting the
original equipment manufacturer (OEM) formulation
(such as Mopartreplacement parts) should be used.
As front disc brake shoe linings wear, master cyl-
inder reservoir brake fluid level will drop. Fluid level
should be checked after replacing shoes.
Front disc brakes are equipped with an audible
wear indicator on the outboard brake pad (Fig. 5).
This sensor emits a sound when the brake lining
may need inspection or replacement.
Fig. 4 Front Disc Brakes
1 ± STEERING KNUCKLE
2 ± BRAKE PADS AND LININGS
3 ± BRAKE ROTOR
4 ± DRIVING HUB
5 ± CALIPER ASSEMBLY
5 - 4 BRAKESPL
DESCRIPTION AND OPERATION (Continued)

The adapter is used to mount the brake caliper to the
vehicle (Fig. 9). The adapter has two machined abut-
ments, which are used to position and align the cal-
iper and brake pads for movement inboard and
outboard. The adapter also mounts the parking brake
shoes and actuating cables to the vehicle.
PARKING BRAKES
The parking brakes (Fig. 4) consist of the following
components:
²Hand-operated park brake lever - automatic-ad-
justing
²Parking brake cables
²Actuation levers and struts
²Duo-servo parking brake assembly (rear disc
only)
PARKING BRAKE LEVER
All vehicles are equipped with a center-mounted,
hand-operated parking brake lever mounted between
the front seats (Fig. 10). This lever is an automatic-
adjusting type that continuously applies minimal
tension to the parking brake cables to keep them in
adjustment at all times. Due to this feature, the
parking brake cable system does not require adjust-
ment. Proper parking brake system adjustment is
obtained by proper drum brake or drum-in-hat brake
shoe adjustment. When service is needed, the lever
auto-adjust mechanism must be reloaded and locked
out before service can be performed.
The parking brake lever has a short output cable
with an equalizer bracket attached to it that connects
to the parking brake cables (Fig. 10). The output
cable can only be serviced as part of the parking
brake lever.PARKING BRAKE CABLES
There is an individual parking brake cable for each
rear wheel that joins a parking cable equalizer,
attached to the parking brake lever, to the rear park-
ing brakes. The parking brake cables are made of
flexible steel cable. Both drum rear brakes and disc
rear brakes use the same parking brake cable config-
uration, but the cables are different.
PARKING BRAKES
On vehicles equipped with rear drum brakes, the
rear wheel service brakes also act as the vehicle's
parking brakes. The rear drum brake shoes, when
acting as parking brakes, are mechanically operated
using an internal actuating lever and strut connected
to the flexible steel parking brake cable.
The parking brakes on vehicles equipped with rear
disc brakes consist of a small duo-servo brake assem-
bly mounted to the disc brake caliper adapter (Fig.
11). The hat (center) section of the rear brake rotor
serves as the braking surface (drum) for the parking
brakes (Fig. 12). This parking brake application uses
the same operating cable configuration as the drum
brake equipped vehicles, but different cables.
Fig. 10 Parking Brake Lever
1 ± PARKING BRAKE LEVER
2 ± PARKING BRAKE WARNING LAMP SWITCH
3 ± OUTPUT CABLEFig. 11 Parking Brake Assembly With Rear Disc
Brakes
1 ± DISC BRAKE ADAPTER
2 ± PARKING BRAKE BRAKE SHOES
3 ± HUB/BEARING ASSEMBLY
4 ± BRAKING DISC STONE SHIELD
5 ± PARKING BRAKE ACTUATING STRUT
PLBRAKES 5 - 7
DESCRIPTION AND OPERATION (Continued)