Checking The Rear Brake Disc - Yamaha XT660R S Service Manual

REAR WHEEL, BRAKE DISC, AND REAR WHEEL
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SPROCKET
2. Check:
• tire
• rear wheel
Damage/wear → Replace.
Refer to "CHECKING THE TIRES" in chap-
ter 3.
3. Check:
• spokes
Refer to
WHEEL".
4. Measure:
• radial wheel runout
• lateral wheel runout
Refer to
WHEEL".
EAS00527

CHECKING THE REAR BRAKE DISC

1. Check:
• brake disc
Damage/galling → Replace.
2. Measure:
• brake disc deflection
Out of specification → Correct the brake
disc deflection or replace the brake disc.
Brake disc deflection limit (maxi-
mum)
0.15 mm (0.006 in)
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a. Place the motorcycle on a suitable stand so
that the rear wheel is elevated.
b. Remove the brake caliper.
c. Hold the dial gauge at a right angle against
the brake disc surface.
d. Measure the deflection 1.5 mm (0.06 in)
below the edge of the brake disc.
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4 - 15
CHAS
"CHECKING THE
"CHECKING THE
M M MMM M M MMM M
L L LLL L L LLL L
FRONT
FRONT
M MMM M MMM
L LLL L LLL