KIA Niro: Front Brake

Inspection

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

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: 22 mm (0.8661 in)
  • Service Limit: 20.0 mm (0.7874 in)

Deviation: Less than 0.005mm (0.0002in)

  1. 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: 11.0 mm (0.4331 in.)

Service limit: 2.0 mm (0.079 in.)

  1. 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)

  1. If the runout of the brake disc exceeds the limit specification, replace the disc, and then measure the runout again.
  2. If the runout does not meet the limit specification, remove the disc, turn it 180º and reinstall. Then check the runout of the brake disc again.
  3. If the runout cannot be corrected by changing the position of the brake disc, replace the brake disc.

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