2-42 PERIODIC MAINTENANCE
Periodic Maintenance Procedures
Remove the reservoir cap and diaphragm, and pour the
brake fluid into a container.
Slide the dust cover [A] on the push rod [B] out of place,
and remove the circlip [C].
Special Tool - Inside Circlip Pliers: 57001-143
Pull out the push rod with the piston stop [D].
Take off the piston [E], secondary cup [F], primary cup [G],
and return spring [H].
Do not remove the secondary cup from the piston
since removal will damage it.
Before assembly, clean all parts including the master
cylinder with brake fluid or alcohol.
Except for the disc pads and disc, use only disc
brake fluid, isopropyl alcohol, or ethyl alcohol for
cleaning of the brake parts. Do not use any other
fluid for cleaning of these parts. Gasoline, engine
oil, or any other petroleum distillate will cause de-
terioration of the rubber parts. Oil spilled on any
part will be difficult to wash off completely, and will
eventually deteriorate the rubber used in the disc
Apply brake fluid to the removed parts and to the inner
wall of the cylinder.
Take care not to scratch the piston or the inner wall of the
Apply silicone grease (ex. PBC grease).
Brake Lever Pivot Bolt
Brake Lever Pivot Contact
Push Rod Contact (Rear)
Torque - Brake Lever Pivot Bolt: 5.9 N·m (0.60 kgf·m, 52
Brake Lever Pivot Bolt Locknut: 5.9 N·m (0.60
kgf·m, 52 in·lb)
Brake Caliper Fluid Seal and Dust Seal
Front Caliper (see Front Caliper Removal in the Brakes
Brake Pads (see Brake Pad Removal in the Brakes