Drum Brake System; Brake Lining - Sym Mio 50 Service Manual

13. Brake

Drum Brake System

Brake Drum
Removal
Use a vacuum cleaner and other suitable tools to
clean the brake parts to minimize the hazard
caused by the asbestos dust.
Caution
Inhaling asbestos dust may cause respiration
●
system disorder even cancer. Never use an
air hose or a dry brush as to clean the brake
parts.
Grease on brake lining will reduce braking
●
efficiency.
Inspection
Remove the brake drum from wheel rim.
Check the brake drum for wear and damage,
replace wheel hub if necessary.
Measure the ID of hub at several points and
record the largest value.
Service limit: HU10U
HU05U
Caution
Remove the rust by using #120 sand papers.
An inside micrometer must be used when
measuring ID of brake drum because the
brake drum has a friction back plate.

Brake Lining

Inspection
Measure the thickness of the brake lining at three
points (both ends and center).
If the thickness is less than specified, or if it is
contaminated by oil or grease, replace as a set.
Service limit: Front
Rear
13-12
To this chapter contents
111.5 mm
95.50 mm
2.0 mm
2.0 mm
Front brake drum
Rear brake drum
Front
Brake lining
Rear Brake lining