FRONT BRAKE INSPECTION

PROCEDURE

1. INSPECT BRAKE CYLINDER AND PISTON

   
   

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

2. INSPECT PAD LINING THICKNESS

   
   
   1. 

      *a

      Ruler

      Using a ruler, measure the front disc brake pad lining thickness.

      -	Standard thickness	Minimum thickness
      except 1AD-FTV	12.5 mm (0.492 in.)	1.0 mm (0.0394 in.)
      for 1AD-FTV Inner Pad	11.5 mm (0.453 in.)	1.0 mm (0.0394 in.)
      for 1AD-FTV Outer Pad	12.0 mm (0.472 in.)	1.0 mm (0.0394 in.)

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

      Tech Tips

      Be sure to check front disc thickness when replacing the front disc 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. 

      *a	Micrometer

      Using a micrometer, measure the front disc thickness.

      Standard thickness
      26.0 mm (1.024 in.)

      Minimum thickness
      23.0 mm (0.906 in.)

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

5. INSPECT DISC RUNOUT

   
   

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

      Click here

   2. 

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

      SST

      09330-00021

      Torque:

      103 N*m  { 1050 kgf*cm, 76 ft.*lbf }

   3. 

      *a	Dial Indicator

      Using a dial indicator, measure the disc runout 10 mm (0.394 in.) 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 front axle hub sub-assembly and front speed sensor.

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

   4. Remove the 5 hub nuts and front disc.