Yamaha XV1600A1999 Service Manual page 136

FRONT WHEEL AND BRAKE DISCS
4-6
EAS00531
CHECKING THE BRAKE DISCS
The following procedure applies to all of the
brake discs.
1. Check:
S brake disc
Damage/galling ! Replace.
2. Measure:
S brake disc deflection
Out of specification ! Correct the brake disc
deflection or replace the brake disc.
Maximum brake disc deflection
Front: 0.15 mm
Rear: 0.15 mm
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 1.5 mm below the
edge of the brake disc.
3. Measure:
S brake disc thickness
Measure the brake disc thickness at a few
different locations.
Out of specification ! Replace.
Minimum brake disc thickness
Front: 4.5 mm
Rear: 6.5 mm
4. Adjust:
S brake disc deflection
a. Remove the brake disc cover and brake disc.
b. Rotate the brake disc cover and brake disc
by one bolt hole.
c. Install the brake disc cover and brake disc.
CHAS