Brake Disk; Master Cylinder - Sym RV 250i Service Manual

Brake Disk

Inspection
Visually check the brake disk for wear or break.
Measure the thickness of the disk at several
places. Replace the disk if it has exceeded the
service limit.
Allowable limit:
Front brake disk 2.5 mm
Rear brake disk 3.5 mm
Remove the brake disk from wheel.
Check the disk for deformation and bend.
Allowable limit: 0.30 mm
Caution
The dirty brake lining or disk will reduce the
brake performance.
Brake lining includes the asbestos ingredient,
cannot use the air-gun to be clean, the
operator should dress the mouthpiece and
the glove, use vacuum cleaner clean it.

Master Cylinder

Master Cylinder Removal
Caution
Do not let foreign materials enter into the
cylinder.
Caution
The whole set of master cylinder, piston,
spring, diaphragm and cir clip should be
replaced as a set.
Remove the handlebar covers.
Remove the leads of brake light switch.
Drain out the brake fluid.
Remove the brake lever from the brake master
cylinder.
Remove the brake hose.
Remove the master cylinder bolts and the master
cylinder.
To this chapter contents
Brake disk
14. Brake System
Micrometer
Brake hose
Brake switch
2 bolts
14-9