Yamaha TT-R125(R) Owner's Service Manual page 396

FRONT BRAKE (TT-R125LW)
Brake caliper
1. Inspect:
G
2. Inspect:
G
WARNING
Replace the brake caliper piston seals and
brake caliper dust seals 2 whenever a
brake caliper is disassembled.
3. Inspect:
G
G
G
G
4. Inspect:
G
Brake hose
1. Inspect:
G
5 - 16
CHAS
Brake caliper cylinder inner surface a
Wear/score marks → Replace brake
caliper assembly.
Brake caliper piston 1
Wear/score marks → Replace brake
caliper piston assembly.
Brake caliper bracket 1
Cracks/damage → Replace the brake
caliper assembly.
Guide pin 2
Rust/damage → Replace the brake cal-
iper assembly.
Sleeve boot 3
Pin boot 4
Wear/damage → Replace.
Brake caliper support bolt 1
Scorches/rust/damage → Replace.
Brake hose 1
Crack/damage → Replace.