SsangYong Rexton. Service manual - part 502

FRONT BRAKE  4B-13

SSANGYONG  Y200

YAD4B240

YAD4B250

YAD4B260

UNIT REPAIR

BRAKE CALIPER

Disassembly Procedure

1. Remove the caliper assembly.

2. Separate the cylinder assembly and carrier.

•

Remove the guide rod bolt.

•

Separate the cylinder assembly and carrier.

3. Disassemble the carrier.

•

Remove the pad.

•

Remove the spring.

•

Remove the guide rod and the boot.

4. Remove the cylinder assembly.

•

Remove the bleeder plug.

•

Remove the bleeder plug cap.

•

Remove the piston boot.

YAD4B270

•

Using the compressed air, blow out the piston
from housing.

Notice: Do not face in the direction of removing.

•

Remove the piston.

•

Remove the piston seal.

SSANGYONG  Y200

4B-14  FRONT BRAKE

YAD4B280

YAD4B290

3. Fasten the bleeder screw as specified torque.

Installation Notice

Assembly Procedure

1. Installation should follow the removal procedure

in the reverse order.

Notice: Clean all the parts in denatured alcohol or
brake fluid. Dry the parts with unlubricated
compressed air and blow out all the passages in
the housing and the bleeder valve.

Apply the brake fluid on the surface of the piston
and cylinder.

2. Fasten the guide rod bolt as specified torque.

Installation Notice

Tightening Torque

7 - 13 N•m

 (62 - 115 lb-in)

Tightening Torque

22 - 32 N•m

(16 - 24 lb-ft)

SECTION 4C

REAR BRAKE

TABLE OF CONTENTS

Description and Operation ................................... 4C-2

Drum Brake ......................................................... 4C-2

Wheel Cylinder .................................................... 4C-2

Brake Lining ........................................................ 4C-2

Disc Brake .......................................................... 4C-3

Specifications ...................................................... 4C-3

Diagnostic Information and Procedures .............. 4C-4

Inspection ............................................................. 4C-5

Drum Brake Type ................................................. 4C-5

Disc Brake Type .................................................. 4C-5

Cross Sectional View ........................................... 4C-7

Drum Brake (KDAC) ............................................. 4C-7

Disc Brake .......................................................... 4C-8

Component Locator ............................................. 4C-9

Drum Brake ......................................................... 4C-9

Disc Brake ........................................................ 4C-10

Rerair Instructions .............................................. 4C-11

On-Vehicle Service ............................................. 4C-11

Disc Brake Assembly ........................................ 4C-11

Drum Brake Assembly ....................................... 4C-16

Unit Repair .......................................................... 4C-21

Wheel Cylinder .................................................. 4C-21

Parking Brake Lever ........................................... 4C-22

SSANGYONG  Y200

4C-2  REAR BRAKE

DESCRIPTION AND OPERATION

DRUM BRAKE

This drum brake assembly is a leading/trailing shoe
design.

Both brake shoes are held against the wheel cylinder
pistons by the lower return spring and the fixed anchor
plate near the lower return spring. When the brakes
are applied, the wheel cylinder pistons move both
shoes out to contact the drum. With forward wheel
rotation, the forward brake shoe will wrap into the drum
and become selt-energized. With reverse wheel
rotation, brake shoes is transferred to the anchor plate
t h r o u g h   t h e   b r a k i n g   p l a t e   t o   t h e   a x l e   f l a n g e .
Adjustment is automatic and occurs on any service
brake application. Do not switch the position of shoes
that have been in service, as this may render the self-
adjustment feature inoperative and result in increased
pedal travel.

The brake drum must have high abrasion resistance,
heatproof, high stiffness, fatigue stiffness and strength
enough not to make any deformation. The temperature
of the drum surface comes up to 500 - 700 °C on brake
operation by the friction with the lining. When the
temperature of the drum surface continues to keep high,
the friction coefficient goes down and the ‘fade
development’ occurs. When the brake is applied often
on the hill, any accident may be occur.

YAD4C010

WHEEL CYLINDER

Both wheel cylinder diameters are same in order to
balance the friction forces of both shoes.

The hydraulic pressure from the master cylinder is
provided to the wheel cylinder and the piston in the
wheel cylinder allows to push both shoes toward the
drum resulted in generating the braking force.

BRAKE LINING

The brake lining is installed with the brake shoe and
pushed toward the drum for applying the brake pedal.

Thus, lining must have high-heat tolerance, abrasion
resistance and high friction coefficient.

Brake Lining and Drum Clearance Automatic
Control System

If the lining’s wear is excessive, the piston moves to
long distance and the pedal travel increases. The
clearance between the drum and the brake lining
should be adjusted.

Generally the drum brake must be adjusted regularly
and thus the clearance automatic control system
enables to adjust the clearance between the brake
lining and the drum resulting from brake lining wear.

YAD4C020

1 Cylinder Housing
2 Boot
3 Spring
4 Piston Cup
5 Piston
6 Air Bleeder

1 Cylinder Housing
2 Boot
3 Spring
4 Piston Cup
5 Piston
6 Air Bleeder