Workshop Manual

4
Chapter 1 Brake System
I. System Maintenance Parameters
1. Brake disc check:
The friction surface of brake disc should be flat and has no apparent grooves; otherwise, replace it.
2. Thickness check
The standard thickness of front disc (ventilation disc) is 17 mm with service limit of 15 mm; when
exceeding the service limit, replace it.
3. Brake lining thickness check
Standard thickness of front brake lining shall be 10 mm, service limit shall be 3 mm, and the
remaining thickness of limit of brake pad thickness shall be not less than 3mm.
Standard thickness of rear brake lining shall be 5 mm, service limit shall be 1 mm, and the
remaining thickness of limit of brake pad thickness shall be not less than 1 mm.
4. Brake disc runout check
Check the brake disc side face runout with a dial gauge. The service limit of front disc is 0.03mm,
and, if exceeding the limit, replace the disc.
Important notice:
After completion of replacing friction lining or brake disc, stop down brake for several times to
enable breaking-in between brake lining and brake disc. Make sure safety!
After replacing brake lining, check brake fluid level if is between MIN and MAX.