Service manual

12-12 BRAKES
Master Cylinder
Front Master Cylinder Inspection (Visual
Inspection)
•
Disassemble the master cylinder (see Front Brake Master
Cylinder Disassembly).
•
Check that there are no scratches, rust or pitting on the
inner wall of the master cylinder [A] and on the outside of
the piston [B].
If the master cylinder or piston shows any damage, re-
place them.
•
Inspect the primary [C] and secondary [D] cups.
If a cup is worn, damaged, softened (rotted), or swollen,
the piston assembly should be replaced to renew the
cups.
If fluid leakage is noted at the brake lever, the piston as-
sembly should be replaced to renew the cups.
•
Check the dust cover [E] for damage.
If it is damaged, replace it.
•
Check that the relief [F] and supply [G] ports are not
plugged.
If the relief port becomes plugged, the brake pads will
drag on the disc. Blow the ports clean with compressed
air.
•
Check the piston return spring [H] for any damage.
If the s pring is damaged, replace it.