Kia Optima: Inspection - Front Disc Brake. Repair procedures - Brake System - Brake System - Kia Optima TF 2011-2021 Service ManualKia Optima: Inspection

Front brake disc thickness check

1. Check the brake pads for wear and fade.
2. Check the brake disc for damage and cracks.
3. Remove all rust and contamination from the surface, and measure the disc thickness at 8 points, at least, of same distance (5mm) from the brake disc outer circle.

Front brake disc thickness

- Standard: 28 mm (1.10 in)

- Service Limit: 26.4 mm (1.04 in)

Deviation: Less than 0.005mm (0.0002in)


4. If wear exceeds the limit, replace the discs and pad assembly left and right of the vehicle.
Front Brake Pad Check
1. Check the pad wear. Measure the pad thickness and replace it, if it is less than the specified value.

Pad thickness

Standard value: 11 mm (0.43 in)

Service limit: 2.0 mm (0.0787 in)
2. Check that grease is applied, to sliding contact points. Check for metal damage to the pad and backing.

Front brake disc runout check
1. Place a dial gauge about 5mm (0.2 in.) from the outer circumference of the brake disc, and measure the runout of the disc.

Brake disc runout

Limit: 0.04 mm (0.0016 in.) or less (new one)


2. If the runout of the brake disc exceeds the limit specification, replace the disc, and then measure the runout again.
3. If the runout does not exceed the limit specification, install the brake disc after turning it 180∞ and then check the runout of the brake disc again.
4. If the runout cannot be corrected by changing the position of the brake disc, replace the brake disc.

Replacement
Front brake pads 1. Loosen the guide rod bolt (B) and pivot the caliper (A) up out of the way. Tightening torque:21.6 ~ 31.4 N.m (2.2 ~ 3.2 kgf.m, 15.9 ~ 23.1 lb-ft) ...

Installation
1. Installation is the reverse of removal. 2. Use a SST (09581-11000) when installing the brake caliper assembly. 3. After installation, bleed ...

See also:

To Defrost Outside Windshield
1. Set temperature to the extreme hot (25∞C~32∞C) position. 2. Set the fan speed to the or position. 3. Press the defrost button (). 4. The air conditioning will be turned on according to the ...

Electric type
The electric day/night rearview mirror automatically controls the glare from the headlights of the car behind you. Adjust the rearview mirror to the desired position. Type A Press the УOФ butt ...

Checking the brake/clutch* fluid level
Check the fluid level in the reservoir periodically. The fluid level should be between MAX and MIN marks on the side of the reservoir. Before removing the reservoir cap and adding brake/c ...

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