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SsangYong Rexton. Manual - part 499

SECTION 4B

FRONT BRAKE

TABLE OF CONTENTS

Description and Operation ................................... 4B-2

Caliper ................................................................ 4B-2

Clearance Calibration ........................................... 4B-2

Specifications ...................................................... 4B-2

Diagnostic Information and Procedures .............. 4B-3

Inspection ............................................................. 4B-4

Pad Thickness ..................................................... 4B-4

Brake Disc Thickness .......................................... 4B-4

Brake Disc Run Out ............................................. 4B-5

Caliper Housing I.D .............................................. 4B-5

Component Locator ............................................. 4B-6

Cross-Sectional View ........................................... 4B-6

Front Caliper Brake .............................................. 4B-7

Repair Instructions ................................................ 4B-8

On-Vehicle Service ............................................... 4B-8

Front Brake .......................................................... 4B-8

Brake Pad Replacement .................................... 4B-10

Unit Repair .......................................................... 4B-13

Brake Caliper .................................................... 4B-13

SSANGYONG Y200

4B-2 FRONT BRAKE

DESCRIPTION AND OPERATION

CALIPER

This caliper has a single bore and is mounted to the
steering knuckle with two mounting bolts. Hydraulic
pressure, created by applying the brake pedal, is
converted by the caliper to a stopping force. This force
acts equally against the piston and the bottom of the
caliper bore to move the piston outward and to slide
the caliper inward, resulting in a clamping action on
the rotor. This clamping action forces the linings against
the rotor, creating friction to stop the vehicle.

However, as a part of the piston seal is fixed into a
grove in the cylinder shape of the seal is as shown in
below figure, distorted toward the piston moving
direction.

When the pressure is taken off from the brake pedal
and the hydraulic pressure is released from the piston,
a restoring elastic force is generated at the seal and
pushes the piston rightward and back it in original
position.

As the pads wear away and the clearance between
rotor and pads become larger, the piston moves larger.

The seal then could change in shape further, but since
end of the seal is fixed into the groove in the cylinder,
the distortion is limited to the same amount as
previously described.

The piston moves further to cover the distance of
clearance. As the piston returns by the same distance
and the rubber seal recovers its original shape, the
clearance between the rotor and pads are maintained
in original condition.

YAD4B010

YAD4B020

CLEARANCE CALIBRATION

When the hydraulic pressure is applied to the piston,
the piston moves leftward. The piston seal, which extent
considerable pressure against the piston, moves with
cylinder.

SPECIFICATIONS

Application

Caliper Cylinder I.D.

Pad Thickness

Disc Thickness

MANDO

Ventilated Disc Type

Ø 60 mm

10 mm

24 mm

Delphi Korea

←
←
←
←

FRONT BRAKE 4B-3

SSANGYONG Y200

Pad Wear, Hardening

Oil Or Water Contamination On The Pad

Inoperative Caliper

Pad Wear, Hardening

Oil Or Water Contamination On The Pad

Uneven Wear Or Twisted Of The Disc

Inoperative Caliper

Inoperative Caliper Returning

Pad Wear

Pad Wear, Hardening

Damage On The Disc

Interference Of The Dust Cover

Loose Caliper Mounting Bolts

Replace

Replace and Repair

Replace

Replace and Repair

Replace

Repair

Tighten

Poor Braking

Uneven Braking

Dragging Brake

Excessive Pedal Travel

Noise and Vibration When
Brake Applied

DIAGNOSTIC INFORMATION AND PROCEDURES

Condition

Possible Cause

Action

SSANGYONG Y200

4B-4 FRONT BRAKE

;;;;

yyyy

;;;;;

yyyyy

YAD4B040

YAD4B050

Clean the dissembled parts and visually check the
followings;

•

Wear, rust and damage on the cylinder and piston

•

Damage, crack on the caliper body and damage,
wear on the guide pin

•

Pad uneven wear and oil contamination

•

Boot’s damage and tear

•

Disc plate’s scratch and bending

INSPECTION

PAD THICKNESS

1. Remove the front wheel.

2. Measure the thickness and replace as needed.

BRAKE DISC THICKNESS

1. Measure the thickness of the rotor at four or more

points around the circumference of the rotor.

2 If the thickness of the rotor is below the specified

value, replace the brake rotor.

Thickness

10 mm

Max wear Limit

2 mm

Thickness

24 mm

Max wear Limit

22 mm

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