FRONT BRAKE INSPECTION


  1. INSPECT BRAKE CYLINDER AND PISTON


    1. Check the cylinder bore and piston for rust and scoring. If necessary, replace the disc brake cylinder and piston.

  2. INSPECT PAD LINING THICKNESS


    1. A0040GJE03
      Text in Illustration
      *1 Ruler

      Using a ruler, measure the pad lining thickness.

      Standard thickness
      10.0 mm (0.394 in.)
      Minimum thickness
      1.0 mm (0.0394 in.)

      If the pad lining thickness is less than the minimum thickness, replace the disc brake pads.

      Tech Tips

      Be sure to check the wear of the front disc after replacing the brake pads with new ones.

  3. INSPECT FRONT DISC BRAKE PAD SUPPORT PLATE


    1. Make sure that the front disc brake pad support plates have sufficient rebound, no deformation, cracks or wear, and that all rust and dirt are cleaned off. If necessary, replace the front disc brake pad support plates.

  4. INSPECT DISC THICKNESS


    1. A0041HXE01
      Text in Illustration
      *1 Micrometer

      Using a micrometer, measure the disc thickness.

      Standard thickness
      25.0 mm (0.984 in.)
      Minimum thickness
      22.0 mm (0.866 in.)

      If the disc thickness is less than the minimum, replace the front disc.

  5. INSPECT DISC RUNOUT


    1. Inspect the front axle hub bearing looseness and front axle hub runout Click here.

    2. A0040NHE01

      Using SST to hold the disc, tighten the disc with the 5 nuts.

      SST
      09330-00021
      Torque:
      103 N*m  { 1050 kgf*cm, 76 ft.*lbf }
    3. A0042GEE02
      Text in Illustration
      *1 Dial Indicator

      Using a dial indicator, measure the disc runout 10 mm (0.394 in.) away from the outer edge of the front disc.

      Maximum disc runout
      0.05 mm (0.00197 in.)

      Note

      Keep the magnet of the dial indicator away from the axle hub and speed sensor.

      If the runout exceeds the maximum value, change the installation position of the disc to minimize the runout. If the runout exceeds the maximum even when the installation position is changed, grind the disc. If the disc thickness is less than the minimum, replace the front disc.

    4. Remove the 5 nuts and front disc.