Sym PA12B Service Manual page 151

10. Brake System
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 axis.
Replace the master cylinder if the measured
values exceed service limit.
Service limit：12.755 mm
Measure the master cylinder piston outer
diameter. Replace the piston if its measured
value exceeds service limit.
Service limit：11.945 mm
Assembly
Caution
Make sure there is no dust on all
components before assembling.
Apply clean brake fluid to the piston and then
install the piston.
Install the larger end of the spring onto the
master cylinder.
Install the cir clip.
Caution
Make sure the clip is seated securely in
the groove.
Install the rubber cap into the groove properly.
10-10
To this chapter contents
Rubber cap
Master cylinder piston
Clip
Piston
Spring
Brake light switch