Yamaha BT1100 2002 Service Manual page 210

FRONT WHEEL AND BRAKE DISCS
Brake disc deflection limit
a. Place the motorcycle on a suitable stand so
that the wheel is elevated
b. Before measuring the front brake disc deflec-
tion, turn the handlebar to the left or right to
ensure that the front wheel is stationary.
c. Remove the brake caliper.
d. Hold the dial gauge at a right angle against
the brake disc surface.
e. Measure the deflection 2 ~ 3 mm below the
edge of the brake disc.
3. Measure:
• brake disc thickness
Measure the brake disc thickness at a few
different locations.
Out of specification
Brake disc thickness limit
(minimum)
4. Adjust:
• brake disc deflection
a. Remove the brake disc.
b. Rotate the brake disc by one bolt hole.
c. Install the brake disc.
NOTE:
Tighten the brake disc bolts in stages and in a
crisscross pattern.
Brake disc bolt
d. Measure the brake disc deflection.
e. If out of specification, repeat the adjustment
steps until the brake disc deflection is within
specification.
f. If the brake disc deflection cannot be brought
within specification, replace the brake disc.
6-5
CHAS
Front: 0.2 mm
Rear: 0.15 mm
Replace.
Front: 4.5 mm
Rear: 4.5 mm
25 Nm (2.5 m•kg)
®
LOCTITE