Wheel Axle; Brake Disc - Yamaha YZ125N1 Service Manual

FRONT WHEEL AND REAR WHEEL
5-4
EC514200

Wheel axle

1. Measure:
9Wheel axle bends
Out of specification
Use the dial gauge 1.
Wheel axle bending limit:
0.5 mm (0.020 in)
NOTE:
The bending value is shown by one half of the
dial gauge reading.
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Do not attempt to straighten a bent axle.
EC594200

Brake disc

1. Measure:
9Brake disc deflection (only rear brake disc)
Use the dial gauge 1.
Out of specification Inspect wheel runout.
If wheel runout is in good condition, re-
place the brake disc.
Disc deflection limit:
Standard
Rear —
2. Measure:
9Brake disc thickness
Out of limit Replace.
Disc wear limit:
Standard
Front 3.0 mm (0.12 in)
Rear 4.0 mm (0.16 in)
CHAS
Replace.
<Limit>
0.15 mm (0.006 in)
a
<Limit>
2.5 mm (0.10 in)
3.5 mm (0.14 in)