Yamaha TT-R125(S) Owner's Service Manual page 476

REAR WHEEL AND REAR BRAKE
5 - 26
REMOVAL POINTS
EC523101
Rear wheel
1. Remove:
Wheel 1
G
NOTE:
Push the wheel forward and remove the drive
chain 2.
EC513201
Wheel bearing (if necessary)
1. Remove:
Bearing 1
G
NOTE:
Remove the bearing using a general bearing
puller 2.
INSPECTION
EC514100
Wheel
1. Measure:
Wheel runout
G
Out of limit → Repair/replace.
Wheel runout limit:
Radial 1: 2.0 mm (0.08 in)
Lateral 2: 2.0 mm (0.08 in)
2. Inspect:
Bearing
G
Rotate inner race with a finger.
Rough spot/seizure → Replace.
NOTE:
Replace the bearings, oil seal and wheel collar
(wheel sprocket side) as a set.
EC514200
Wheel axle
1. Measure:
Wheel axle bends
G
Out of specification → Replace.
Use the dial gauge 1.
Wheel axle bending limit:
0.5 mm (0.020 in)
CHAS