Repair Procedures: Inspection

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

   Brake Disc Thickness 

   Standard: 10 mm (0.394 in)

   Service Limit: 8.4 mm (0.331 in)

   Deviation: less than 0.01 mm (0.0004 in)

   Fig 1: Checking Rear Brake Disc Thickness

   Courtesy of HYUNDAI MOTOR AMERICA
4. If wear exceeds the limit, replace the discs and pad assembly left and right 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: 10 mm (0.394 in)

   Service limit: 2.0 mm (0.0787 in)

2. Check the damage of pad, backing metal and contamination with grease.

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

   Fig 2: Checking Rear Brake Disc Runout

   Courtesy of HYUNDAI MOTOR AMERICA
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.