Yamaha TT-R125(R) Owner's Service Manual page 394

FRONT BRAKE (TT-R125LW)
Brake caliper piston seal kit
1. Remove:
G
G
NOTE:
Remove the brake caliper piston seals and
brake caliper dust seals by pushing them with
a finger.
CAUTION:
Never attempt to pry out brake caliper pis-
ton seals and brake caliper dust seals.
WARNING
Replace the brake caliper piston seals and
brake caliper dust seals whenever a brake
caliper is disassembled.
INSPECTION
Brake master cylinder
1. Inspect:
G
WARNING
Use only new brake fluid.
2. Inspect:
G
3. Inspect:
G
G
5 - 15
CHAS
Brake caliper dust seal 1
Brake caliper piston seal 2
Brake master cylinder inner surface a
Wear/scratches → Replace brake mas-
ter cylinder assembly.
Stains → Clean.
Diaphragm 1
Crack/damage → Replace.
Brake master cylinder piston 1
Brake master cylinder cup 2
Wear/damage/score marks → Replace
brake master cylinder kit.