Yamaha YZF-R125 Service Manual: Checking the rear brake pads
The following procedure applies to all of the brake pads.
1. Operate the brake.
2. Check:
- Rear brake pad
Wear indicator groove "a" has almost disappeared
Replace the brake pads as a set.Refer to "REAR BRAKE" on page 4-28.
Checking the front brake pads
The following procedure applies to all of the
brake pads.
1. Operate the brake.
2. Check:
Front brake pad
Wear indicator grooves "a" have almost disappeared
Replace the brake pads as a ...
Checking the front brake hose
1. Check:
Brake hose "1"
Cracks/damage/wear
Replace.
2. Check:
Brake hose holder "2"
Loose connection Tighten the
holder bolt.
3. Hold the vehicle upright and apply ...
Other materials:
Checking the front brake disc
1. Remove:
Front wheel
Refer to "FRONT WHEEL" on page 4-6.
2. Check:
Brake disc
Damage/galling Replace.
3. Measure:
Brake disc deflection
Out of specification Correct the
brake disc
deflection or replace the brake disc.
a. Place the vehicle on a suitable stand ...
Checking the rear brake caliper
1. Check:
Brake caliper piston "1"
Rust/scratches/wear Replace the
brake
caliper piston.
Brake caliper cylinder "2"
Scratches/wear Replace the
brake caliper
assembly.
Brake caliper body "3"
Cracks/damage Replace the
brake caliper
assembly.
Brake fluid deli ...
Assembling the rear brake caliper
WARNING
Before installation, all internal brake components
should be cleaned and lubricated
with clean or new brake fluid.
Never use solvents on internal brake components
as they will cause the brake caliper
piston dust seal and piston seal to swell
and distort.
...