Front

CHECK AND REPLACEMENT





NOTE: The brake pads have wear indicators that contact the brake disc when the brake pad thickness becomes 2 mm (0.08 inch) The wear indicators emit a squealing sound to warn the driver to have the pads replaced and to have the brake system checked.





1. Check brake pad thickness through caliper body check port.
Standard value: 10 mm (0.39 inch)
Limit: 2.0 mm (0.08 inch)

Caution:
1. When the limit is exceeded, the brake pods on both the left and right wheels must be replaced as a set.
2. If there Is a significant difference in the thicknesses of the pads on the left and right sides, check the sliding condition of the piston, lock pin and guide pin.

Remove Guide Pin:

2. Remove guide pin. Lift caliper assembly, slide the assembly toward the inside of the wheel well until separated from the lock pin. Support it with wires.

Caution: Do not wipe off the special grease that is on the guide pin or allow it to contaminate the lock pin.

Caliper Support:

3. Remove the following parts from caliper support.
1. Pad and wear indicator assembly
2. Pad assembly
3. Clip
4. Outer shim (stainless)
5. Outer shim (coated with rubber)
6. Inner shim (stainless)
7. Inner shim (coated with rubber)

4. Take out the drive shaft.





5. Set the special tool to the front hub assembly as shown in the illustration.





6. Measure hub torque (A) with pads removed to measure brake drag torque. Torque value will be used later to calculate brake drag force with the pads installed.

NOTE: Tighten the nuts in order to secure the disc to the hub.

7. Securely attach the pad clip to the caliper support.





8. Clean piston and insert into cylinder (caliper) with special tool.





9. Apply grease to the attaching faces of pad and inner shim and to the attaching faces of inner and outer shims. Apply so as not to spread it out from the edge of shim.
Specified grease: Brake grease SAE J310, NLGI No.1

Caution:
1. Do not deposit grease or other dirt on pad or brake disc friction surfaces.
2. The grease should be applied so that it does not protrude from the shim surfaces.

10. Be careful that the piston boot does not catch and tear as the caliper assembly and lock pin are installed.
11. Check brake drag torque as follows.
1. Start engine and hold brake pedal down for 5 seconds. [Pedal depression force: approx. 196 N (44 lbs.)]
2. Stop engine.
3. Turn brake disc forward 10 times.





4. Check hub torque (B) with spring scale.
5. Calculate the drag torque of the disc brake [difference between hub torque (B) and hub torque (A)].
Standard value: 69 N (15.4 lbs.) [4 Nm (35 inch lbs.)] or less
12. If the difference between brake drag torque and hub torque exceeds the standard value, disassemble piston and clean the piston. Check for corrosion or worn piston seal, and check the sliding condition of the lock pin and guide pin.
13. Reinstall the drive shaft.