Disassembly and Assembly

DISASSEMBLY





1. REMOVE CYLINDER BOOTS
Using a screwdriver, remove the cylinder boot from the caliper.





2. REMOVE PISTON
a. Place a piece of cloth or a similar object between the piston and caliper.
b. Use compressed air to remove the piston from the cylinder.

CAUTION: Do not place your fingers in front of the piston when using compressed air.





3. REMOVE PISTON SEALS FROM BRAKE CYLINDER
Using a screwdriver, remove the piston seals from the caliper.
4. REMOVE PIN BOOT AND SLIDING BUSHING
Using a screwdriver and hammer, tap out pin boot and sliding bushing.

HINT: Tape the screwdriver tip before use.

INSPECTION





1. MEASURE PAD LINING THICKNESS
Using a ruler, measure the pad lining thickness.
Standard thickness: 12.0 mm (0.472 inch)
Minimum thickness: 1.0 mm (0.039 inch)
Replace the pad if the pad's thickness is at the minimum or if it shows signs of uneven wear.





2. MEASURE DISC THICKNESS
a. Temporarily fasten the disc with the 3 hub nuts.
b. Using a micrometer, measure the disc thickness.
Standard thickness: 18.0 mm (0.709 inch)
Minimum thickness: 16.0 mm (0.611 inch)
Replace the disc if the thickness of the disc is at the minimum thickness or less. Replace the disc or grind it on a lathe if it is scored or is worn unevenly.





3. MEASURE DISC RUNOUT
Using a dial indicator, measure the disc runout at a position 10 mm (0.39 inch) from the outside edge.
Maximum disc runout: 0.1 mm (0.0040 inch)
If the disc's runout is at the maximum value or greater, check the bearing play is in the axial direction and check the axle hub runout.
If the bearing play and axle hub runout are not abnormal, adjust the disc runout or grind it on an "On Car" brake lathe.
4. IF NECESSARY, ADJUST DISC RUNOUT
a. Remove the torque plate from the backing plate.
b. Remove the hub nuts and the disc. Reinstall the disc rotating 1/5 of a turn from its original position on the hub.
Install and torque the hub nuts.
Torque: 103 Nm (1,050 kgf-cm, 76 ft. lbs.)
Remeasure the disc runout. Make a note of the runout and the disc's position on the hub.
c. Repeat (b) until the disc has been installed on the 3 remaining hub positions.
d. If the minimum runout recorded in (b) and (c) is less than 0.1 mm (0.0040 inch), install the disc in that position.
e. If the minimum runout recorded in (b) and (c) is greater than 0.1 mm (0.0040 inch), replace the disc and repeat step 3.
f. Install the torque plate and tighten the 2 bolts.
Torque: 103 Nm (1,050 kgf-cm, 76 ft. lbs.)

REASSEMBLY
Reassembly is in the reverse order of disassembly.

NOTICE: Apply lithium soap base glycol grease to the parts indicated by the arrows.