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13-18 BRAKES
Brake Discs
Disc Cleaning
Poor braking can be caused by oil on a disc. Oil on a disc
must be cleaned off with an oilless cleaning fluid such as
trichloroethylene or acetone.
WARNING
These cleaning fluids are usually highly flammable
and harmful if breathed for prolonged periods. Be
sure to heed the fluid manufacturer’s warnings.
Disc Removal
•
Remove:
Front Hub (see Wheels/Tires chapter)
Brake Disc Mounting Bolts [A]
Brake Disc [B]
Disc Installation
•
The disc must be installed with the marked side [A] facing
toward the steering knuckle.
•
Apply a non-permanent locking agent to the brake disc
mounting bolts.
•
Tighten:
To rque - Brake Disc Mounting Bolts: 37 N·m (3 .8 kgf·m, 27
ft·lb)
•
After installing the discs, check the disc runout. Com-
pletely clean off any grease t hat has gotten on either side
of the disc with a high-flash point solvent. Do not use one
which will leave an oily residue.
Disc Wear
•
Measure the thickness of each disc at the point [A] where
it has worn the m ost.
Replace the disc if it has worn past the service limit.
Disc Thickness
Standard: 3.3 ∼ 3.7 mm (0.130 ∼ 0.146 in.)
Service Limit: 3 mm (0.12 in.)
Disc Runout
•
Jack up the vehicle so that the wheels are off the ground.
•
Remove the front wheels and turn the handlebar fully to
one side.
•
Set up a dial gauge against the disc [A], and m easure the
disc runout.
If the runout exceeds the service limit, replace the disc.
Disc Runout
Standard: TIR 0.4 mm (0.016 in.) or less
Service Limit: TIR 0.5 mm (0.020 in.)