Replace the caliper holder shaft rubber friction boot [A]
and dust boot [B] if they are damaged.
Apply a thin coat of silicone or PBC grease to the caliper
holder shafts [C] and holder holes (Silicone or PBC
grease is a special high temperature, water-resistance
Install the pads (see Rear Brake Pad Installation).
Caliper Fluid Seal Damage
The fluid seals [A] around the piston maintain the proper
pad/disc clearance. If the seals are not satisfactory, pad
wear will increase, and constant pad drag on the disc will
raise brake and brake fluid temperature.
Replace the fluid seals under any of the following condi-
tions: (a) fluid leakage around the pad; (b) brakes over-
heat (c) there is a large difference in inner and outer pad
wear; (d) the seal is stuck to the piston.
If the fluid seal is replaced, replace the dust seal as well.
Also, replace all seals every other time the pads are
Caliper Dust Seal/Friction Boot Damage
Check that the dust seals [B] and friction boots [C] are not
cracked, worn, swollen, or otherwise damaged.
If they show any damage, remove the caliper holder and
Front Caliper [F]
Rear Caliper [G]
Caliper Piston and Cylinder Damage
Visually inspect the pistons [D] and cylinder surfaces.
Replace the caliper if the cylinder and piston are badly
scores or rusty.
Caliper Holder Shaft Wear
The caliper body must slide smoothly on the caliper holder
shafts [E]. If the body does not slide smoothly, one pad will
wear more than the other, pad wear will increase, and con-
stant drag on the disc will raise brake and brake fluid tem-
Check to see that the caliper holder shafts are not badly
worn or stepped, and that the rubber friction boots are not
If the rubber friction boot is damaged, replace the rubber
friction boot. To replace the friction boot, remove the pads
and the caliper holder.
If the caliper holder shaft is damage, replace the caliper