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.

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) are optional.

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. All vehicles with ABS come standard with
four-wheel-disc brakes. For more information on ABS
(Refer to 5 - BRAKES - ABS - DESCRIPTION).

The parking brake system consists of a hand-oper-

ated lever mounted between the front seats, two
parking brake cables and parking brake shoes at
each rear wheel. Only vehicles with rear disc brakes
receive separate parking brake shoes. Vehicles with
rear drum brakes utilize the service brakes as the
parking brake shoes.

OPERATION - BASE BRAKE SYSTEM

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 proportioning valves
(non-ABS - rear only) and chassis brake tubes to the
brakes at each tire and wheel assembly.

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.

WARNING

WARNING: DUST AND DIRT ACCUMULATING ON
BRAKE PARTS DURING NORMAL USE MAY CON-
TAIN ASBESTOS FIBERS FROM PRODUCTION OR
AFTERMARKET

BRAKE

LININGS.

BREATHING

EXCESSIVE

CONCENTRATIONS

ASBESTOS

FIBERS CAN CAUSE SERIOUS BODILY HARM.
EXERCISE

CARE

WHEN

SERVICING

BRAKE

PARTS. DO NOT SAND OR GRIND BRAKE LINING
UNLESS EQUIPMENT USED IS DESIGNED TO CON-
TAIN THE DUST RESIDUE. DO NOT CLEAN BRAKE
PARTS

WITH

COMPRESSED AIR

BY DRY

BRUSHING. CLEANING SHOULD BE DONE BY
DAMPENING THE BRAKE COMPONENTS WITH A
FINE MIST OF WATER, THEN WIPING THE BRAKE
COMPONENTS CLEAN WITH A DAMPENED CLOTH.
DISPOSE OF CLOTH AND ALL RESIDUE CONTAIN-
ING ASBESTOS FIBERS IN AN IMPERMEABLE
CONTAINER WITH THE APPROPRIATE LABEL. FOL-
LOW PRACTICES PRESCRIBED BY THE OCCUPA-
TIONAL SAFETY AND HEALTH ADMINISTRATION
(OSHA) AND THE ENVIRONMENTAL PROTECTION
AGENCY (EPA) FOR THE HANDLING, PROCESSING,
AND DISPOSING OF DUST OR DEBRIS THAT MAY
CONTAIN ASBESTOS FIBERS.

CAUTION

CAUTION: Use only Mopar

brake fluid or an equiv-

alent from a tightly sealed container. Brake fluid
must conform to DOT 3 specifications. Do not use
petroleum-based fluid because seal damage in the
brake system will result.

CAUTION: Brake fluid will damage painted surfaces.
If brake fluid is spilled on any painted surfaces,
wash it off immediately with water.

CAUTION: Never use gasoline, kerosene, alcohol,
motor oil, transmission fluid, or any fluid containing
mineral oil to clean system components. These flu-
ids damage rubber cups and seals.

CAUTION: During service procedures, grease or
any other foreign material must be kept off the cal-
iper assembly, brake linings, brake rotor and exter-
nal surfaces of the hub.

PL/SRT-4

BRAKES - BASE

5 - 3

CAUTION: When handling the brake rotor and cali-
per, be careful to avoid damaging the brake rotor
and caliper, and scratching or nicking the brake
shoe lining.

DIAGNOSIS AND TESTING - BASE BRAKE
SYSTEM DIAGNOSIS CHARTS

NOTE: There are three diagnosis charts following
that cover the RED BRAKE WARNING INDICATOR
LAMP, BRAKE NOISE and OTHER BRAKE CONDI-
TIONS.

RED BRAKE WARNING INDICATOR LAMP

CONDITION

POSSIBLE CAUSES

CORRECTION

RED BRAKE WARNING
INDICATOR LAMP ON

1. Parking brake lever not fully
released.

1. Release parking brake lever.

2. Parking brake warning lamp
switch on parking brake lever.

2. Inspect and replace switch as necessary.

3. Brake fluid level low in reservoir.

3. Fill reservoir. Check entire system for
leaks. Repair or replace as required.

4. Brake fluid level switch.

4. Disconnect switch wiring connector. If
lamp goes out, replace switch.

5. Mechanical instrument cluster
(MIC) problem.

5. Refer to Appropriate Diagnostic
Information.

6. ABS EVBP malfunction.

6. Refer to ABS section and Appropriate
Diagnostic Information.

BRAKE NOISE

CONDITION

POSSIBLE CAUSES

CORRECTION

DISC BRAKE CHIRP

1. Excessive brake rotor runout.

1. Follow brake rotor diagnosis and testing.
Correct as necessary.

2. Lack of lubricant on brake caliper
slides.

2. Lubricate brake caliper slides.

DISC BRAKE RATTLE OR
CLUNK

1. Broken or missing anti-rattle
spring clips on shoes.

1. Replace brake shoes.

2. Caliper guide pins loose.

2. Tighten guide pins.

3. Worn shoe plate or rails.

3. Replace shoes (pads) or knuckle.

DISC BRAKE SQUEAK AT
LOW SPEED (WHILE
APPLYING LIGHT BRAKE
PEDAL EFFORT)

1. Brake shoe linings.

1. Replace brake shoes.

DRUM BRAKE CHIRP

1. Lack of lubricant on brake shoe
support plate where shoes ride.

1. Lubricate shoe contact areas on brake
shoe support plates.

2. Wheel cylinder out of alignment.

2. Loosen wheel cylinder mounting bolts,
realign wheel cylinder with brake shoes and
tighten mounting bolts.

DRUM BRAKE CLUNK

1. Drum(s) have threaded machined
braking surface.

1. Reface or replace drake drums as
necessary.

5 - 4

BRAKES - BASE

PL/SRT-4

BRAKES - BASE (Continued)

CONDITION

POSSIBLE CAUSES

CORRECTION

DRUM BRAKE HOWL OR
MOAN

1. Lack of lubricant on brake shoe
support plate where shoes ride and
at the anchor.

1. Lubricate shoe contact areas on brake
shoe support plates and at the anchor.

2. Rear brake shoes.

2. Replace rear brake shoes.

SCRAPING OR WHIRRING

1. ABS wheel speed sensor and tone
wheel.

1. Inspect, correct or replace faulty
component(s).

SCRAPING (METAL-TO-
METAL).

1. Foreign object interference with
brakes.

1. Inspect brakes and remove foreign
object.

2. Brake shoes worn out.

2. Replace brake shoes. Inspect rotors and
drums. Reface or replace as necessary.

OTHER BRAKE CONDITIONS

CONDITION

POSSIBLE CAUSES

CORRECTION

BRAKES CHATTER

1. Rear brake drum out of round or
disc brake rotor has excessive
thickness variation.

1. Isolate condition as rear or front.
Reface or replace brake drums or
rotors as necessary.

BRAKES DRAG (FRONT
OR ALL)

1. Contaminated brake fluid.

1. Check for swollen seals. Replace all
system components containing rubber.

2. Brake lamp switch out of
adjustment.

2. Replace brake lamp switch and
adjust. (Refer to 8 - ELECTRICAL/
LAMPS/LIGHTING - EXTERIOR/
BRAKE LAMP SWITCH - REMOVAL)

3. Binding caliper pins or bushings.

3. Replace pins and bushings

4. Master cylinder not fully returning.

4. Inspect master cylinder and replace
as necessary.

5. Binding brake pedal.

5. Replace brake pedal.

BRAKES DRAG (REAR
ONLY)

1. Parking brake cables binding or
froze up.

1. Check cable routing. Replace cables
as necessary.

2. Parking brake cable return spring
not returning shoes.

2. Replace cables as necessary.

3. Service brakes not adjusted
properly (rear drum brakes only).

3. Adust rear brake shoes. Refer to
Brake Pads/Shoes - Drum Brakes.

4. Obstruction inside the center
console preventing full return of the
parking brake cables.

4. Remove console and remove
obstruction.

BRAKES GRAB

1. Contaminated brake shoe linings.

1. Inspect and clean, or replace shoes.
Repair source of contamination.

2. Improper power brake booster
assist.

2. Refer to power brake booster -
diagnosis and testing.

EXCESSIVE PEDAL
EFFORT

1. Obstruction of brake pedal.

1. Inspect, remove or move obstruction.

2. Low power brake booster assist.

2. Refer to power brake booster.

3. Glazed brake shoe linings.

3. Reface or replace brake rotors as
necessary. Replace brake shoes.

PL/SRT-4

BRAKES - BASE

5 - 5

BRAKES - BASE (Continued)

Content .. 28 29 30 31 ..