Sym Joyride 125 Service Manual page 235

17. Muffler / Rear Wheel / Rear Cushion
Check any deformation and warping of the brake
disc.
Allowable limit: 0.3 mm
Warning
Never contaminate the brake disc with
grease. The contaminated brake disc will
reduce it performance.
The brake disc contains asbestos. Never
use air jet to clean it. Preferably, the
operator shall wear respirator and gloves,
and use the vacuum cleaner to clean the
brake disc.
Inspection of Rear Wheel
Wheel Rim
Place the wheel rim on a rotational support.
Rotate it by hand and measure the run-out with
a dial indicator.
Run-out limit: 2.0 mm
Bearing
Rotate the inner ring of the bearing with a finger.
The bearing should move smoothly and quietly.
Check the fit of the bearing and rim.
Replace the bearing if its motion is not smooth
or noisy.
Caution
The bearing must be replaced in pair.
Replacement of Rear Wheel Bearing
Remove the collar and oil seal from the rocker
arm.
Pull off the rear wheel bearing by means of the
bearing puller.
Remove the outer oil seal.
Caution
Never reuse the old oil seal on the bearing.
Press in the oil seal and bearing into the rocker
arm by employing a hydraulic presser.
Install the oil seal and collar onto the rocker arm.
Installation
Install the rear wheel.
Install the collar on the rocker arm.
Install the rocker arm onto the rear wheel shaft.
Mount the outer washer on the rocker arm.
Tighten the rear wheel nuts.
17-4
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