Front Brake Pad, Brake Caliper & Brake Rotor: Inspection: Inspection

INSPECT PAD LINING THICKNESS
1. Using a ruler, measure the pad lining thickness.
  Standard thickness
  
  12.0 mm (0.472 in.)
  
  Minimum thickness
  
  1.0 mm (0.0394 in.)
  
  If the pad lining thickness is less than the minimum, replace the brake pads.
  
  HINT:
  
  Be sure to check wear of the front disc after replacing the brake pads with new ones.
  
  Fig 1: Inspecting Brake Pads
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  TEXT IN ILLUSTRATION
  
  *1 Ruler
INSPECT DISC THICKNESS
1. Using a micrometer, measure the disc thickness.
  Standard thickness
  
  28.0 mm (1.102 in.)
  
  Minimum thickness
  
  25.0 mm (0.984 in.)
  
  If the disc thickness is less than the minimum, replace the front disc.
  
  Fig 2: Measuring Front Disc Thickness
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  TEXT IN ILLUSTRATION
  
  *1 Micrometer
INSPECT BRAKE CYLINDER AND PISTON
1. Check the cylinder bore and piston for rust or scoring. If necessary, replace the disc brake cylinder assembly and piston.
INSPECT FRONT DISC BRAKE PAD SUPPORT PLATE
1. Inspect the front disc brake pad support plate. If necessary, replace the front brake pad support plate.
  HINT:
  
  Make sure that the pad support plate has sufficient rebound, no deformation, cracks or wear, and that all rust and dirt are cleaned off.
INSPECT DISC RUNOUT
1. Tighten the disc with the 5 hub nuts.
  Torque: 103 N*m (1050 kgf*cm, 76 ft.*lbf)
2. Using a dial indicator, measure the disc runout 10 mm (0.394 in.) away from the outer edge of the front disc.
  
  Fig 3: Measuring Disc Runout
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  TEXT IN ILLUSTRATION
  
  *1 Dial Indicator
  
  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.
  - Install the dial indicator to the shock absorber.
  HINT:
  
  If the runout exceeds the maximum value, change the installation position of the disc on the front axle hub to minimize runout. If the runout exceeds the maximum even after the installation position is changed, check the bearing play in the axial direction and the axle hub runout, refer to ON-VEHICLE INSPECTION . If the bearing play and the axle hub runout are normal and if the disc thickness is not within the specified range, grind the disc. If the disc thickness is less than the minimum, replace the disc.
3. Remove the 5 hub nuts and the front disc.