Yamaha TT-R125(W), Owner'S Service Manual

Page: 438 / 616

5 - 4
CHAS
FRONT WHEEL AND FRONT BRAKE (TT-R125/TT-R125E)
Drum brake
1. Inspect:
●
Brake shoe lining surface
Glazed areas
→
Polish.
Use coarse sand paper.
NOTE:
After polishing, wipe the polished particles with
a cloth.
2. Measure:
●
Brake shoe lining thickness
a
Out of specification
→
Replace.
NOTE:
Replace the brake shoes and springs as a set
if either is worn to the limit.
Brake shoe lining thickness:
Standard <Limit>
40 mm
(0.16 in)
2.0 mm
(0.08 in)
3. Measure:
●
Brake drum inside diameter
a
Out of specification
→
Replace.
Brake drum inside diameter:
Standard <Limit>
110 mm
(4.33 in)
111 mm
(4.37 in)
4. Inspect:
●
Brake drum inner surface
Oil/scratches
→
Remove.
Oil
Use a rag soaked in lac-
quer thinner or a solvent.
Scratches
Use a emery cloth (lightly
and evenly polishing).