Front

FRONT DISC BRAKE PAD CHECK AND REPLACEMENT





NOTE:
The brake pads have wear indicators that contact the brake disc when the brake pad thickness becomes 2 mm (0.079 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. Visually check the brake pad thickness through the inspection hole in the caliper body.

Standard value: 10.0 mm (0.39 inch)

Limit: 2.0 mm (0.08 inch)

CAUTION:
1. Replace the pad if worn beyond the limit. At this time, replace the pads on right and left wheels as a set.
2. If there is a large difference in thickness between the pads on the right and left wheels, check the sliding portions of the caliper.





2. Remove the guide pin, lift caliper assembly, slide the assembly toward the inside of the wheel well until separated from the lock pin. Support it with a wire, etc.

CAUTION: The guide pin has been coated with special grease. Do not wipe off the special grease on the lock pin, and do not contaminate the lock pin.

Remove Pads Parts From Caliper Support:

3. Remove the following parts from the caliper support.
1) Pad and wear indicator assembly
2) Pad assembly
3) Clip
4) Outer shim





4. With the brake assembly removed, use a spring scale to measure the rotary sliding resistance of the hub in the forward direction.
5. Install the pad clips to the caliper support in position.





6. Clean the piston and, using the special tool, push the piston into the cylinder (caliper).
7. With care not to allow the piston boot to be wedged, lower the caliper assembly and fit the lock pin.
8. Start the engine, depress the brake pedal firmly two to three times and stop the engine.
9. Give the brake disc ten turns in the forward direction.





10. Using a spring scale, measure the rotary sliding resistance of the hub in the forward direction.
11. Obtain the drag force of the disc brake (the difference between the values measured in 10 and 4).

Standard value: 70 N (15.4 lbs.) or less

12. If the drag force of the brake exceeds the standard value, disassemble the piston and check for dirty or corroded piston sliding surface and deteriorated piston seal.







1. Visually check the brake pad thickness. Through the opening in the caliper body.

Standard value: 10.0 mm (0.39 inch)
Limit: 2.0 mm (0.08 inch)

CAUTION:
1. Replace the pad if worn beyond the limit. At this time, replace the pads on right and left wheels as a set.
2. If there is a large difference in thickness between the pads on the right and left wheels, check the sliding portions of the caliper.

Removal Of Pad Pins:

2. Remove the clip and, holding the cross spring with hand, remove the pad pins.





3. Using a screwdriver, remove the pads and shims.
1) Inner pad (with wear indicator)
2) Outer pad
3) Shim B
4) Shim A





4. With the brake assembly removed, use a spring scale to measure the rotary sliding resistance of the hub in the forward direction.





5. Clean the piston and then using the special tool, push the piston into the cylinder (caliper).





6. Apply repair kit grease to both sides of the inner shims.

Specified grease: Brake grease SAE J310, NLGI No. 1

CAUTION:
1. Make sure that the friction surfaces of pads and brake discs are free of grease and other contaminants.
2. The grease should never squeeze out from around the shim.

7. Start the engine, depress the brake pedal firmly two to three times and stop the engine.
8. Give the brake disc ten turns in the forward direction.





9. Using a spring scale, measure the rotary sliding resistance of the hub in the forward direction.
10. Obtain the drag force of the disc brake (the difference between the values measured in 9 and 4).

Standard value: 70 N (15.4 lbs.) or less

11. If the drag force of the brake exceeds the standard value, disassemble the piston and check for dirty or corroded piston sliding surface and deteriorated piston seal.