WHEELS 14
139
14.4 Checking the brake discs
Warning
Danger of accidents Worn-out brake discs reduce the braking effect.
– Make sure that worn-out brake discs are replaced immediately.
400257-10
– Check the front and rear brake disc thickness at multiple
points for the dimension
A
.
Info
Wear reduces the thickness of the brake disc around
the contact surface of the brake linings.
Brake discs - wear limit (All standard EXC/XC-W models)
front 2.5 mm (0.098 in)
rear 3.5 mm (0.138 in)
Brake discs - wear limit (All Six Days models)
front 2.5 mm (0.098 in)
rear 3.7 mm (0.146 in)
» If the brake disc thickness is less than the specified value:
– Change the front brake disc. ( p. 142)
– Change the rear brake disc. ( p. 146)
– Check the front and rear brake discs for damage, cracking, and
deformation.
» If the brake disc exhibits damage, cracking, or deforma-
tion:
– Change the front brake disc. ( p. 142)
– Change the rear brake disc. ( p. 146)
14.5 Checking the rim run-out
Warning
Danger of accidents Incorrectly tensioned spokes impair the handling characteristic and result in sec-
ondary damage.
The spokes break due to being overloaded if they are too tightly tensioned. If the tension in the spokes
is too low, then lateral and radial run-out will form in the wheel. Other spokes will become looser as a
result.
– Check spoke tension regularly, and in particular on a new vehicle.
Info
A loose spoke can unbalance the wheel and other spokes may loosen within a short period.
If the spokes are too tight, they can break due to local overload.
Check the spoke tension regularly, especially on a new motorcycle.
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