INSPECTION AND REPAIR OF REAR BRAKE COMPONENTS 1. MEASURE PAD LINING THICKNESS Standard thickness: 10.0 mm (0.394 in.) Minimum thickness: 1.0 mm (0.039 in.) Replace the pad if the thickness is less than the minimum or if it shows sign of uneven wear. 2. MEASURE ROTOR DISC THICKNESS Standard thickness: 18.0 mm (0.709 in.) Minimum thickness: 17.0 mm (0.669 in.) If the disc is scored or worn, or if thickness is less than minimum, repair or replace the disc. 3. MEASURE ROTOR DISC RUNOUT HINT: Before measuring the runout, confirm that the rear hub bearing play is within specification. Measure the rotor disc runout at 10 mm (0.39 in.) from the outer edge of the rotor disc. Maximum disc runout: 0.13 mm (0.0051 in.) If the runout is greater than the maximum, inspect and adjust following the procedure listed below. Then replace the disc if necessary. (a) Remove the torque plate from the rear carrier. (b) Remove the hub nuts of the temporarily installed disc and pull off the rotor disc. (c) Check that the axle shaft axial play is within specification, and replace the bearing if not within specification. (See page RA-6) (d) Install the rotor disc and measure the disc runout, then shift the rotor disc one fifth a turn and measure the disc runout. Similarly measure the runout in each position, and select the position where the runout is minimum. (e) In this position, if the runout is within specification, install the torque plate and torque the mounting bolts. Torque: 475 kg-cm (34 ft-lb, 47 N-m) (f) If not within specification, replace the rotor disc. (g) Remove the parking brake shoe, and inspect the parking brake lining and the new rotor disc for proper contact. (See page BR-39 to 41) (h) Install the parking brake shoe and rotor. (See page BR-43) (i) Repeat (d) and (e).