Sym Mio 50 Service Manual page 159

13. Brake
Inspection
Check the master cylinder for damage or scratch.
Replace it if necessary.
Measure the cylinder inner diameter at several
points along both X and Y directions.
Replace the cylinder if the measured values
exceed allowable limit.
Service limit: 11.055 mm
Measure the outer diameter of the piston.
Replace the piston if its measured value exceeds
allowable limit.
Service limit: 10.945 mm
Assembly
Caution
It is necessary to replace the whole set
●
comprising piston, spring, piston cup, and cir
clip.
Make sure there is no dust on all components
●
before assembling.
Apply clean brake fluid to the piston cup, and then
install the cup onto the piston.
Install the larger end of the spring onto the master
cylinder.
The master cup's cavity should be face inside of
master cylinder when installing the master cup.
Install the cir clip.
Caution
Never install cup lip in the opposite direction.
Make sure the cir clip is seated securely in
the groove.
Install the rubber pad into groove properly.
13-10
To this chapter contents
Rubber
boot
Rubber
washer
Master cylinder
Piston
Micrometer
Cir clip
Piston
Spring
Dial
Brake light
switch
Master
cylinder