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Brake Disk; Brake Disc Inspection; Brake Disc Removal; Brake Disc Installation - Kawasaki KX250F Service Manual

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12-20 BRAKES

Brake Disk

Brake Disc Inspection

Visually inspect the disc [A].
If it is scratched or damaged, replace the disc.
Measure the thickness of each disc at the point [B] where
it has worn the most.
Replace the disc if it has worn past the service limit.
2.85 ∼ 3.15 mm (0.112 ∼ 0.124 in.)
3.85 ∼ 4.15 mm (0.152 ∼ 0.163 in.)
Service Limit:
2.5 mm (0.10 in.)
3.5 mm (0.14 in.)
Place a jack under the motorcycle so that the front/rear
wheel is raised off the ground.
Special Tool - Jack: 57001-1238
Set up a dial gauge against the disc [A] as illustrated.
For the front disc, turn the handlebar fully to one side.
Measure the disc runout while rotating the wheel slowly
If the runout exceeds the service limit, replace the disc.
Not more than 0.25 mm (0.098 in.)
Service Limit: 0.3 mm (0.01 in.)

Brake Disc Removal

Remove the wheel (see Front Wheel Removal, Rear
Wheel Removal in the Wheels/Tires chapter).
Unscrew the mounting bolts, and take off the disc.

Brake Disc Installation

Install the brake disc on the wheel so that the marked side
[A] faces out.
Apply a non-permanent locking agent to the threads of
the rear brake disc mounting bolts [B].
Torque - Rear Brake Disc Mounting Bolts: 23 N·m (2.3
kgf·m, 16.6 ft·lb)
Front Brake Disc Mounting Bolts: 9.8 N·m (1.0
kgf·m, 87 in·lb)


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