1997 SSANGYONG KORANDO Service Repair Manual

SECTION 4E
REAR BRAKES
TABLE OF CONTENTS
Description and Operation...................................4E-2
Drum Brake.........................................................4E-2
Disc Brake..........................................................4E-3
Service Specifications ..........................................4E-4
Diagnostic Information and Procedures..............4E-5
Inspection.............................................................4E-6
Drum Brake Type.................................................4E-6
Disc Brake Type..................................................4E-6
Cross Sectional View ...........................................4E-8
Drum Brake (KDAC).............................................4E-8
Disc Brake..........................................................4E-9Component Locator...........................................4E-10
Drum Brake.......................................................4E-10
Disc Brake........................................................4E-11
Rerair Instructions..............................................4E-12
On-Vehicle Service...............................................4E-12
Disc Brake Assembly ........................................4E-12
Drum Brake Assembly .......................................4E-17
Unit Repair..........................................................4E-22
Wheel Cylinder..................................................4E-22
Parking Brake Lever...........................................4E-23
Specifications.....................................................4E-24
Fastener Tightening Specifications.....................4E-24

SSANGYONG MY2002
4E-2 REAR BRAKES
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
through the braking plate to the axle flange.
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 Bleeder1 Cylinder Housing
2 Boot
3 Spring
4 Piston Cup
5 Piston
6 Air Bleeder

REAR BRAKES 4E-3
SSANGYONG MY2002
DISC BRAKE
The disc brake uses at front wheel generally and
recently has been using at rear wheel. The floating
type caliper disc brake installed by this vehicle installs
only brake cylinder per caliper at one side. When the
master cylinder generates the hydraulic pressure, the
piston pushes the pad in order to compress to the
disc and at this time, the caliper is moved by this
reaction resulted in pushing the pad at the other side
to compress to the disc. Because the brake disc
contacts atmospheric conditions and effect on good
radiation, the braking variation keeps uniform forces,
the uneven braking may not be generated on high
speed driving.
YAD4C030

SSANGYONG MY2002
4E-4 REAR BRAKES
Application
Delphi Korea
-
-
-
-
φ 42 mm
10 mm
10.4 mm Drum I.D.
Shoe Type
Lining Width x Length x Thickness
Wheel Cylinder I.D.
Caliper Cylinder I.D.
Brake Pad Thickness
Disc Thickness
SERVICE SPECIFICATIONS
MANDO
-
-
-
-
φ 42.9 mm
10 mm
10.4 mmDisc Brake
Drum Brake
φ 254 mm
Leading and Trailing
55 x 243 x 4.7 mm
φ 23.81 mm
-
-
-

REAR BRAKES 4E-5
SSANGYONG MY2002
Lining Wear, Hardening
Oil or Water Contamination on the Lining
Inoperative Wheel Cylinder
Inoperative Clearance Automatic Control System
Lining Wear, Hardening
Oil or Water Contamination on the Lining
Inoperative Wheel Cylinder
Inoperative Clearance Automatic Control System
Damage of the Brake Shoe Return Spring
Inoperative Wheel Cylinder Returning
Lining Wear
Inoperative Clearance Automatic Control System
Lining Wear, Hardening
Foreign Material Inside Drum
Loosen the Brake Plate Bolt
Drum Deformation or Surface Damage
Lining Wear, Hardening
Oil Contamination on the Lining
Inoperative Clearance Automatic Control SystemReplace
Replace or Repair
Replace
Repair
Adjust
Replace or Repair
Replace
Repair
Replace
Replace
Replace
Repair
Replace
Clean
Tighten
Replace
Replace
Replace
Repair Poor Braking
Uneven Braking
Dragging Brake
Excessive Pedal Travel
Noise and Vibration When
Brake Applied
Inoperative Parking Brake
DIAGNOSTIC INFORMATION AND PROCEDURES
Symptom
Possible CauseAction

SSANGYONG MY2002
4E-6 REAR BRAKES





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INSPECTION
YAD4C060
YAD4C070
YAD4C080
Inside Diameter
φ 254 mmWear Limitφ 255.5 mm
DRUM BRAKE TYPE
1. Inspect the drum for crack or damage or defor-
mation.
2. Measure the inside diameter.
Measure two more position.
Brake Lining
1. Inspect the surface hardening or excessive wear
of the lining. Inspect the lining for stain with oil.
2. Measure the lining thickness.
Wear Limit 1 mm
If the measured value is below the limit value,
replace the brake lining.
DISC BRAKE TYPE
Pad Thickness
1. Remove the front wheel.
2. If the measured value is below the limit value,
replace the pad.
Wear Limit 2 mm

REAR BRAKES 4E-7
SSANGYONG MY2002
Max. 0.07 mm
Max. 0.03 mm
2. If lateral run out exceeds the specification, replace
the brake disc to prevent the pedal’s vibration at
braking.
YAD4C090
YAD4C100
Brake Disc Thickness
1. Measure the thickness of the rotor at four or more
points around the circumference of the disc.
2. If the thickness of the brake disc is below the
specified value, replace the brake disc.
Disc Thickness Limit 8.5 mm
Brake Disc Run Out
1. Set a dial indicator to the brake disc side and
measure the run out by rotating the disc.
On-Vehicle
Disc only
Run Out Limit

SSANGYONG MY2002
4E-8 REAR BRAKES
YAD4C040
CROSS SECTIONAL VIEW
DRUM BRAKE (KDAC)
1 Backing Plate
2 Wheel Cylinder
3 Brake Shoe Lining
4 Brake Shoe
5 Lower Return Spring (Lower Shoe Spring)
6 Retainer Spring Pin
7 Compression Spring8 Retainer Spring Plate
9 Adjuster Assembly
10 Adjuster Lever
11 Return Spring (Adjuster)
13 Upper Return Spring (Upper Shoe Spring)
14 Bolt
15 Air Bleeder Nipple