Sym GTS 250 Service Manual page 181

Inspection
Wheel axle
Place the wheel axle on a V block, measure its run
out.
Service limit: 0.2 mm
Bearing
Use finger to move the inner ring of each bearing,
it shall move smoothly and quietly. Check the
outer ring is securely attached on the wheel hub.
If the motion of the inner ring of the bearing is not
smooth, or noisy and loose when being moved,
remove and discard it.
Caution
The bearing shall be replaced in pair.
Wheel
Place the wheel on to a rotation seat to check its
rim wobbling.
Turn the wheel with hand and measure its rim
wobbling value with a dial gauge.
Service limit:
Radial: 2.0 mm (0.08 in)
Axial: 2.0 mm (0.08 in)
Disassembly
Remove brake disk (5 bolts).
Remove dust seal, bearing and dist collar from left
side.
Remove dust seal and bearing from right side.
Special tools:
Inner bearing puller
To this chapter contents
15. Steering / Front Wheel / Front Cushion
SYM-6204020
Free play
Inner bearing
puller
Free play
15-6