Kia Niro: Chassis / Disc Brakes and Pads Repair procedures

Kia Niro 2017 (DE HEV) Service Manual / Maintenance / Chassis / Disc Brakes and Pads Repair procedures

Inspection

Check the pads for excessive wear, discs for run out and wear, and calipers for fluid leakage.

Front Brake

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, at the same distance apart (5mm) from the brake disc outer circle.

Front brake disc thickness

- Standard: 22 mm (0.8661 in)

- Service Limit: 20 mm (0.7874 in)

4.

If wear exceeds the limit, replace left and right discs and pad assemblies 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.

- Standard: 17 mm (0.6693 in)

- Service limit: 9.0mm (0.3543 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 5 mm (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 specified limit, replace the disc, and then measure the runout again.

3.

If the runout does not exceed the specified limit, 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.

Rear Brake

Rear 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, at the same distance apart (5 mm) from the brake disc outer circle.

Brake disc thickness

-Standard: 10 mm (0.39 in)

-Service limit: 8.4 mm (0.33 in)

-Deviation: less than 0.01 mm (0.0004 in)

4.

If wear exceeds the limit, replace left and right discs and pad assemblies of the vehicle.

Rear 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: 15 mm (0.5906 in)

-Service limit: 8.0 mm (0.3150 in)

2.

Check that grease is applied to sliding contact points. Check for metal damage to the pad and backing.

Rear 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: 0.05 mm (0.002 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 exceeds 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.

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