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FRONT WHEEL AND BRAKE DISCS
CHECK OF BRAKE DISCS
The procedure below applies to all brake discs.
Check:
• the brake disc
If there is any damage/abrasion, replace.
Measure:
• The deformation of the brake disc.
Substitute the brake disc if it is outside the specifi cation.
• Place the bike on a suitable support so that the wheel is
raised.
• Before measuring the bending of the front brake disc, turn
the handlebar right and then left to make sure that the front
wheel stops.
• To remove the disc brake, refer to chapter “Removal of the
disc brake”.
• Keep the gauge at a right angle to the surface of the brake
disc.
• Measure the bending 1.5 mm (0.05 in) under the edge of
the brake disc Fig. A.
Brake disc Deformation limit
Front 0.1 mm
Rear 0.15 mm
Measure:
• Brake disc thickness.
• Measure the thickness of the brake disc at various different
points - Fig. B.
• If outside specifi cations, replace.
A
3
B
COPY - Moto GB - Grant Martland - grantmartland@motogb.co.uk
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