Checking The Brake Discs - Yamaha YFM250RX 2008 Service Manual

FRONT AND REAR WHEELS
2. Check:
• wheel bearings
Wheel hub play/wheel turns roughly →
Replace.
a. Clean wheel hub exterior.
b. Drive bearing out by pushing spacer aside
and tapping around perimeter of bearing
inner race. Use soft metal drift punch and
hammer. The spacer
bearings.
described.
WARNING
Eye protection is recommended when
using striking tools.
c. To install the wheel bearings, reverse the
above sequence. Use a socket that
matches outside diameter of bearing outer
race to drive in bearing.
CAUTION:
Do not strike the center race or balls of the
bearing. Contact should be made only with
the outer race.
EBS00389

CHECKING THE BRAKE DISCS

1. Check:
• brake discs
Galling/damage → Replace.
2. Measure:
• brake disc deflection
Out of specification → Replace.
Brake disc maximum deflection
• brake disc thickness
Out of specification → Replace.
Brake disc minimum thickness
6-5
CHAS
"floats" between
Remove both bearings
Front: 0.15 mm (0.006 in)
Rear: 0.15 mm (0.006 in)
Front: 3 mm (0.12 in)
Rear: 3.5 mm (0.14 in)
as