Inspection [10/2014 - ]: Procedure

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 disc brake cylinder and/or front disc brake piston.

INSPECT PAD LINING THICKNESS

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

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

TEXT IN ILLUSTRATION

Ruler

Standard thickness

12.0 mm (0.472 in.)

Minimum thickness

1.0 mm (0.0394 in.)

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

HINT:

Be sure to check the wear of the front disc when replacing the front disc brake pads.

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.

INSPECT DISC THICKNESS

Using a micrometer, measure the disc thickness.

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

TEXT IN ILLUSTRATION

*1	Micrometer

Standard thickness

28.0 mm (1.10 in.)

Minimum thickness

25.0 mm (0.984 in.)

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

INSPECT DISC RUNOUT

Inspect the front axle hub bearing looseness and front axle hub runout (Refer to ON-VEHICLE INSPECTION [10/2014 - ] ).

While holding the front disc using SST, tighten the disc with the 5 nuts.

SST: 09330-00021

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Torque: 103 N*m (1049 kgf*cm, 76 ft.*lbf)

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

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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.

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.

Remove the 5 nuts and front disc.