Kia Optima: Repair procedures
Operation and Leakage Check
Check all of the following items:
Component
|
Procedure
|
Brake Booster (A)
|
Check brake operation by applying the brakes during a test drive. If the
brakes do not work properly, check the brake booster. Replace the brake
booster as an assembly if it does not work properly or if there are signs
of leakage.
|
Piston cup and pressure
cup inspection (B)
|
| • |
Check brake operation
by applying the brakes. Look for damage or signs of fluid leakage.
Replace the master cylinder as an assembly if the pedal does not
work properly or if there is damage or signs of fluid leakage. |
| • |
Check for a difference
in brake pedal stroke between quick and slow brake applications.
Replace the master cylinder if there is a difference in pedal stroke. |
|
Brake hoses (C)
|
Look for damage or signs of fluid leakage. Replace the brake hose with a
new one if it is damaged or leaking.
|
Caliper piston seal and
piston boots (D)
|
Check brake operation by applying the brakes.
Look for damage or signs of fluid leakage. If the pedal does not work properly,
the brakes drag, or there is damage or signs of fluid leakage, disassemble
and inspect the brake caliper. Replace the boots and seals with new ones
whenever the brake caliper is disassembled.
|
Brake System Bleeding
| • |
Do not reuse the drained
fluid. |
| • |
Always use genuine DOT3/DOT4
brake Fluid. Using a non-genuine DOT3/DOT4 brake fluid can cause
corrosion and decrease the life of the system.
|
| • |
Make sure no dirt or
other foreign matter is allowed to contaminate the brake fluid. |
| • |
Do not spill brake fluid
on the vehicle, it may damage the paint; if brake fluid does contact
the paint, wash it off immediately with water. |
| • |
The reservoir on the
master cylinder must be at the MAX (upper) level mark at the start
of bleeding procedure and checked after bleeding each brake caliper.
Add fluid as required. |
|
| 1. |
Make sure the brake fluid in
the reservoir is at the MAX(upper) level line. |
| 2. |
Have someone slowly pump the
brake pedal several times, and then apply pressure. |
| 3. |
Loosen the right-rear brake bleed
screw (A) to allow air to escape from the system. Then tighten the bleed
screw securely. Front
Rear
|
| 4. |
Repeat the procedure for wheel
in the sequence shown below until air bubbles no longer appear in the fluid.
|
| 5. |
Refill the master cylinder reservoir
to MAX(upper) level line.
|
Fluid can be overflowed when it is refilled with used brake pad. |
|
See also:
Components (3)
1. Vaccum hose
2. Tube mounting braket
3. Check valve
4. Intensifier
...
Instrument panel illumination
The instrument panel illumination intensity can be adjusted by pressing the control
switch with the headlight switch in any position when the ignition switch is in
the ON position.
The illumina ...
Removal
Replacing an on/off solenoid valve (SS-A, SS-B) does not require additional
hydraulic pressure adjustment; however, the hydraulic pre ...
Brake System