Yamaha TT-R125EY Service Manual page 182

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FRONT WHEEL (TT-R125LE)
Brake disc
1. Measure:
• Brake disc deflection
2. Measure:
• Brake disc thickness a
ASSEMBLY AND INSTALLATION
Front wheel
1. Install:
• Wheel bearing 1
• Spacer 2
• Wheel bearing 3
• Oil seal 4
TIP
• Apply the lithium soap base grease on the
wheel bearing and oil seal lip when installing.
• Install the wheel bearing so that the enclosed
side is facing outward.
• Use a socket that matches the outside
diameter of the race of the bearing.
• Left side of wheel bearing shall be installed
first.
• Install the oil seal with its manufacture's
marks or numbers facing outward.
NOTICE
Do not strike the inner race of the bearing.
Contact should be made only with the outer
race.
5-10
CHAS
Use the dial gauge 1.
Out of specification → Inspect wheel
runout.
If wheel runout is in good condition, replace
the brake disc.
Disc deflection limit:
0.15 mm (0.006 in)
Out of limit → Replace.
Disc wear limit:
Standard
3.0 mm
(0.12 in)
New
<Limit>
2.5 mm
(0.10 in)

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