DISC BRAKE PAD CHECK AND REPLACEMENT
Note. The brake pads (LH wheel) have indicators that contact the brake disc when the brake pad thickness becomes 2 mm (0.08 inch), and emit a squealing sound to warn the driver.
| CAUTION | Whenever a pad must be replaced, replace both LH and RH wheel pads as a set to prevent the vehicle from pulling to one side when braking. 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 and slide pins. |
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- Check the brake pad thickness through the caliper body check port. Standard value: 10.0 mm (0.39 inch) Minimum limit: 2.0 mm (0.08 inch) CAUTION: Do not wipe off the special grease that is on the lock pin. Do not contaminate the lock pin.
- Remove the lock pin bolt < Front > or lock pin and brake hose clamp < Rear >. Pivot the caliper assembly and hold it with wires.
- Remove the following parts from the caliper support. Pad assembly Pad and wear indicator assembly or Pad assembly Shim Clip
- In order to measure the brake drag force after pad installation, measure the rotary-sliding resistance of the hub with the pads removed (Refer to «DISC BRAKE»(ref-308286-S28688860952009020200000) ).
- Install the pads and caliper assembly, and then check the brake drag force (Refer to «DISC BRAKE»(ref-308286-S28688860952009020200000) ).
<< A >> CALIPER PISTON/PISTON BOOT REMOVAL
| CAUTION | Blow air little by little to remove the piston. The piston will pop out if a force of air is applied suddenly. |
Place a piece of wood, etc. against the caliper body as shown. Blow compressed air through the brake hose connection hole to remove the piston boot and piston.
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<< B >> PISTON SEAL REMOVAL
| CAUTION | Do not use a flat-tipped screwdriver or similar tool to remove the piston seal. These may damage the inner side of the cylinder. |
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- Remove the piston seal with your finger tip.
- Clean the piston surface and inner cylinder with alcohol brake fluid DOT 3 or DOT 4.
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Scheme 19: DISASSEMBLY AND ASSEMBLY < REAR >
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Scheme 20: LUBRICATION POINTS
<< A >> PISTON BOOT/CALIPER PISTON REMOVAL
| CAUTION | Blow air little by little to remove the piston. The piston will pop out if a force of air is applied suddenly. |
Place a piece of wood, etc. against the caliper body as shown. Blow compressed air through the brake hose connection hole to remove the piston boot and piston.
Scheme 21
| CAUTION | Do not use a flat-tipped screwdriver or similar tool to remove piston seal. These may damage the inner side of the cylinder. |
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- Remove the piston seal with your finger tip.
- Clean piston surface and inner cylinder with alcohol or brake fluid DOT 3 or DOT 4.
>> A << REAR BRAKE PIN INSTALLATION
Attach a guide pin (with "g" on the bolt head) at the bleeder nipple side of the caliper body and a lock pin (with "l" on the bolt head) at the opposite side.
