1997 SSANGYONG KORANDO brake fluid

SSANGYONG MY2002
4D-2 FRONT BRAKES
DESCRIPTION AND OPERATION
GENERAL DESCRIPTION
When the brakes are applied, fluid pressure is sent to
each brake caliper. The pressure at the caliper is ex-
erted equally against the caliper piston. The pressure
applied to the piston is transmitted directly to the
inboard brake pad. This forces the pad 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 pad 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 has a single bore and is mounted to the
steering knuckle with two mounting bolts. Hydraulic
pressure, created by applying the brake pedal, is con-
verted 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.Important:
•Replace all components included in the repair kits
used to service the caliper.
Lubricate the rubber parts with clean brake fluid to
ease assembly.
Do not use lubricated shop air on brake parts, as
damage to the rubber components may result.
If any hydraulic component is removed or discon-
nected, it may be necessary to bleed all or part of
the brake system. Refer to Section 4F, Antilock
Brake System And Traction Control System.
Replace the pads in axle sets only.
The torque values specified are for dry, unlubricated
fasteners.
Perform the service operations on a clean bench,
free from all oily material.
BRAKE PADS
There are two brake pads mounted to each caliper, one
inboard and one outboard. As front disc brake pad wear,
master cylinder reservoir brake fluid level will drop. Fluid
level should be checked after replacing pads.
BRAKE ROTOR
Each front disc brake rotor is vented to help cool it dur-
ing and after brake applications.

FRONT BRAKES 4D-7
SSANGYONG MY2002
KAA4D060
KAA4D070
CALIPER ASSEMBLY
Removal and Installation Procedure
1. Raise and suitably support the vehicle.
2. Remove the front wheels. Refer to Section 2E,
Tires and Wheels.
3. Remove the brake hose mounting nut and
disconnect the hose. Plug the openings in the
caliper and the brake hose to prevent fluid loss
and contamination.
Installation Notice
Tightening Torque 30 Nm (22 lb-ft)
4. Remove the caliper mounting bolts and then
remove the caliper assembly.
Installation Notice
Tightening Torque 95 Nm (70 lb-ft)
Bleed the caliper. Refer to Section 4A, Hydraulic
Brakes.
Notice: do not move the vehicle until a firm pedal
is obtained or improper braking action will result.
Repeatedly press the brake pedal to bring the
pads in contact with the rotor.
5. Installation should follow the removal procedure
in the reverse order.
SPLASH SHIELD
Removal and Installation Procedure
1. Raise and suitably support the vehicle.
2. Remove the front wheels. Refer to Section 2E,
Tires and Wheels.
3. Remove the hub bearing assembly. Refer to
Section 2C, Front Suspension.
4. Remove the front disc brake rotor. Refer to “Front
Disc Brake Rotor” in this section.
5. Remove the splash shield bolt.
Installation Notice
KAA4D090
Tightening Torque 6 Nm (53 lb-ft)
6. Installation should follow the removal procedure
in the reverse order.

FRONT BRAKES 4D-9
SSANGYONG MY2002
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 Torque7 - 13 Nm
(62 - 115 lb-in)
Tightening Torque22 - 32 Nm
(16 - 24 lb-ft)

SSANGYONG MY2002
4E-12 REAR BRAKES
ON-VEHICLE SERVICE
DISC BRAKE ASSEMBLY
Removal Procedure
1. Remove the rear wheel.
Notice:
Park the vehicle on the flat ground and fix the
vehicle not to move it.
Release the parking brake.
Position the transmission in NEUTRAL.
2. Remove the brake hose from the rear brake
caliper.
Notice: Be carefully to prevent the brake fluid loss
and contamination.
3. Remove the caliper cylinder mounting bolt and
remove the disc pad and the cylinder.
YAD4C130
YAD4C140
RERAIR INSTRUCTIONS
4. Remove the caliper mounting bolt and remove the
caliper assembly.
YAD4C150

REAR BRAKES 4E-17
SSANGYONG MY2002










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DRUM BRAKE ASSEMBLY
1. Remove the tires
Notice:
Park the vehicle on the flat ground and fix the
vehicle not to move it.
Position the transmission in NEUTRAL.
2. Disconnect the brake pipe from the rear brake.
Notice: Be carefully to prevent the brake fluid loss
and contamination.
3. Insert the bolt (M8) to the service hole of the brake
drum and remove the brake drum.
4. Remove the service hole plug of the axle shaft.
YAD4C290
YAD4C300
YAD4C310
5. Remove the return spring.
(1) Disconnect the upper return spring.
(2) Disconnect the lower return spring.
(3) Disconnect the lever spring.
(4) Disconnect the adjuster lever from the adjuster.
YAD4C320

SSANGYONG MY2002
4E-22 REAR BRAKES
UNIT REPAIR
WHEEL CYLINDER
Disassembly Procedure
1. Remove the upper brake return spring and remove
the wheel cylinder with pulling the upper lining
outside.
2. Disassembly the wheel cylinder assembly.
Remove the dust boot and do not reuse them
(1).
Remove the piston (2).
Remove the piston cup and do not reuse it (3).
Remove the spring assembly (4).
Remove the bleeder screw (5).
3. Clean all the parts with the denatured alcohol. Dry
the parts with unlubricated compressed air.
Bleeder Screw7 - 10 Nm
(62 - 89 lb-in)
8 - 12 Nm
(71 - 106 lb-in)
Wheel Cylinder
Mounting Bolt
Notice: Lubricate the new seals, the piston, the
piston cup and the wheel cylinder bore with clean
brake fluid before assembly. 4. Installation should follow the removal procedure
in the reverse order.
5. Tighten the bleeder screw and wheel cylinder as
specified torque.
YAD4C460
YAD4C470
YAD4C480

ABS AND TCS 4F-3
SSANGYONG MY2002
GENERAL DESCRIPTION AND SYSTEM OPERATION
BASIC KNOWLEDGE REQUIRED
Before using this section, it is important that you have
a basic knowledge of the following items. Without this
knowledge, it will be difficult to use the diagnostic
procedures contained in this section.
•Basic Electrical Circuits - You should understand
the basic theory of electricity and know the meaning
of voltage, current (amps), and resistance (ohms).
You should understand what happens in a circuit
with an open or shorted wire. You should be able to
read and understand a wiring diagram.
Use of Circuit Testing Tools - You should know
how to use a test light and how to bypass
components to test circuits using fused jumper
wires. You should be familiar with a digital
multimeter. You should be able to measure voltage,
resistance, and current, and be familiar with the
controls and how to use them correctly.
ABS SYSTEM COMPONENTS
The ABS 5.3 Antilock Braking System (ABS) consists
of a conventional hydraulic brake system plus antilock
components. The conventional brake system includes
a vacuum booster, master cylinder, front disc brakes,
rear disc brakes, interconnecting hydraulic brake pipes
and hoses, brake fluid level switch and the BRAKE
indicator.
The ABS components include a hydraulic unit, an elec-
tronic brake control module (EBCM), two system fuses,
four wheel speed sensors (one at each wheel), intercon-
necting wiring, the ABS indicator, the EBD indicator
and the TCS indicator. See “ABS Component Locator”
in this section for the general layout of this system.
The hydraulic unit with the attached EBCM is located
between the surge tank and the bulkhead on the left
side of the vehicle.
The basic hydraulic unit configuration consists of hy-
draulic check valves, two solenoid valves for each
wheel, a hydraulic pump, and two accumulators. The
hydraulic unit controls hydraulic pressure to the front
calipers and rear calipers by modulating hydraulic
pressure to prevent wheel lockup.
Units equipped with TCS add two more valves for each
drive wheel for the purpose of applying the brake to a
wheel that is slipping. This is done with pressure from
the hydraulic pump in the unit. There is also a TCS
indicator lamp on the instrument panel to alert the driver
to the fact that the TCS system is active. The
components identified in the drawing are those added
to the basic ABS 5.3 system to provide traction control.
Nothing in the hydraulic unit or the EBCM is serviceable.
In the event of any failure, the entire ABS unit withattached EBCM must be replaced. For more
information, refer to “Base Braking Mode” and
“Antilock Braking Mode” in this section.
TRACTION CONTROL SYSTEM
(TCS) DESCRIPTION
General Information
The traction control system (TCS) is a traction system
by means of brake intervention only, available in a low
speed range (< 60kph).
It workes on µ - split roads with sidewise different friction
coefficients.
The spinning driven wheel is braked and the drive
torque can be transferred to the wheel on the high-µ
side. During TCS active, the TCS information lamp is
blinking.
The temperature of the brakes is calculated by a mathe-
matical model and TCS is switched passive if the calcu-
lated temperature is greater than a threshold value (500
°C).
TCS is permitted again, when the calculated tempera-
ture is less than 350 °C.
Control Algorithm
The input signals for the control algorithm are the
filtered wheel speed signals from the ABS speed
processing.
With the speed difference of the driven wheels, the
control deviation is calculated.
If the control deviation exceeds a certain threshold
value, the wheel with the greater slip is braked actively.
The threshold value depends on the vehicle speed:
It is reduced with increasing vehicle speed down to a
constant value.
KAA4F010

ABS AND TCS 4F-5
SSANGYONG MY2002
EBD (ELECTRONIC BRAKE
FORCE DISTRIBUTION) SYSTEM
System Description
As an add-on logic to the ABS base algorithm, EBD
works in a range in which the intervention thresholds
for ABS control are not reached yet.
EBD ensures that the rear wheels are sensitively
monitored for slip with respect to the front axle. If slip
is detected, the inlet valves for the rear wheels are
switched to pressure hold to prevent a further increase
in pressure at the rear-wheel breaks, thus electronically
reproducing a pressure-reduction function at the rear-
wheel brakes.
ABS features an enhanced algorithm which includes
control of the brake force distribution between the front
and rear axles. This is called Electronic Brake
Distribution. In an unloading car condition the brake
efficiency is comparable to the conventional system
but for a fully loaden vehicle the efficiency of the EBD
system is higher due to the better use of rear axle
braking capability.
The Benefits of EBD
Elimination of conventional proportioning valve EBD
utilizes the existing rear axle wheel speed sensor
to monitor rear wheel slip.
Based on many variables in algorithm a pressure
hold, increase and/or decrease pulsetrain may be
triggered at the rear wheels insuring vehicle
stability.
Vehicle approaches the ideal brake force
distribution (front to rear).
Constant brake force distribution during vehicle
lifetime.
EBD function is monitored via ABS safety logic
(conventional proportioning valves are not
monitorable).
“Keep alive” function.Service Precautions
Observe the following general precautions during any
ABS/TCS service. Failure to adhere to these
precautions may result in ABS/TCS system damage.
1. Disconnect the EBCM harness connector before
performing the electric welding procedures.
2. Carefully note the routing of the ABS/TCS wiring
and wring components during removal. The ABS/
TCS components are extremely sensitive to EMI
(eletromagnetic interference). Proper mounting is
critical during component service.
3. Disconnect the EBCM connector with the ignition
OFF.
4. Do not hang the suspension components from the
wheel speed sensor cables. The cables may be
damaged.
5. Do not use petroleum based fluids in the master
cylinder. Do not use any containers previously used
for petroleum based fluids. Petroleum causes
swelling and distortion of the rubber components
in the hydraulic brake system, resulting in water
entering the system and lowering the fluid boiling
point.
KAA4F020