FRONT BRAKE PAD, BRAKE CALIPER & BRAKE ROTOR (for 2GR-FSE): Inspection

INSPECT PAD LINING THICKNESS
1. Using a ruler, measure the pad lining thickness.
  
  Fig 1: Measuring Pad Lining Thickness Using Ruler
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Standard thickness:
  
  12.5 mm (0.492 in.)
  
  Minimum thickness:
  
  1.0 mm (0.039 in.)
  
  If the pad lining thickness is less than the minimum, replace the pad.
  
  HINT:
  
  Be sure to check wear of the front disc after replacing the brake pad with a new one.
INSPECT DISC THICKNESS
1. Using a micrometer, measure the disc thickness.
  
  Fig 2: Measuring Disc Thickness Using Micrometer
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Standard thickness:
  
  30.0 mm (1.181 in.)
  
  Minimum thickness :
  
  27.0 mm (1.063 in.)
  
  If the disc thickness is less than the minimum, replace the disc.
INSPECT BRAKE CYLINDER AND PISTON
1. Check the cylinder bore and piston for rust or scoring.
  If necessary, replace the disc brake cylinder assembly.
INSPECT DISC RUNOUT
1. Using SST to hold the disc, tighten the disc with the 3 hub nuts.
  
  Fig 3: Tightening Disc With Hub Nuts
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  SST 09330-00021
  
  Torque: 103 N*m (1,050 kgf*cm, 76 ft.*lbf)
  
  HINT:
  
  Use the SST to hold the disc while torquing the nuts.
2. Using a dial indicator, measure the disc runout 10 mm inside (0.39 in.) the outer edge of the disc.
  
  Fig 4: Measuring Disc Runout 10 MM Inside (0.39 in.) Outer Edge Of Disc
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Maximum disc runout:
  
  0.05 mm (0.0020 in.)
3. If the runout exceeds the maximum value, change the installation positions of the disc and axle so that the runout will become minimal. If the runout exceeds the maximum even when the installation positions are changed, check the bearing play in the axial direction and the axle hub runout (See ON-VEHICLE INSPECTION ). If they 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.
4. Remove the front disc.