Kia Optima DL3: Brake System / Brake System
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 Booster
- Master Cylinder
- Brake Line
- Brake Pedal
- Stop Lamp Switch
- Front Brake Caliper
- Front Brake Disc
- Rear Brake Caliper
- Rear Brake Disc
- Brake Pad
Service data Service Data Service data Item Specification Master cylinder Cylinder I.
Components and components location Components 1. Reservoir cap 2. Reservoir 3. Master cylinder 4. Brake fluid level sensor 5.
Other information:
Kia Optima DL3 2019-2025 Service and Repair Manual: A/C Pressure Transducer
Description and operation Description The A/C Pressure Transducer (APT) converts the pressure value of high pressure line into voltage value after measuring it. By converted voltage value, engine ECU controls the cooling fan by operating it high speed or low speed.
Kia Optima DL3 2019-2025 Service and Repair Manual: Blower Motor
Repair procedures Inspection 1. Connect the battery voltage and check the blower motor rotation. 2. If the blower motor does not operate well, substitute with a known-good blower motor and check for proper operation.
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