VESPA GTV 250 i.e. 2008 Service Station Manual page 103

Vespa GTV 250 i.e.
- Insert the tool in the hollows and apply the reten-
tion ring
- Bring in the ring's clamping screws while keeping
the tool to support the pulley
Specific tooling
021021Y Driving pulley lock wrench
- Remove the fixing nut and the washer
- Remove the stationary drive pulley half
Inspecting the rollers case
- Check that the internal bushing shown in the fig-
ure is not abnormally worn and measure inner
diameter A.
- Measure outer diameter B of the pulley sliding
bushing shown in the figure.
- Check that the rollers are not damaged or worn.
- Check the sliding shoes for the variator back-
plate are not worn.
- Check the wear of the roller housings and of the
belt facing surfaces on both pulley halves.
- Check that stationary driving pulley does not
show signs of abnormal wear on the grooved edge
and on the surface in contact with the belt.
- Check that the O-ring is not pushed out of shape.
CAUTION
DO NOT LUBRICATE OR CLEAN SINTERED BUSHINGS
Characteristic
movable driving half-pulley bushing: Standard
Diameter
26.000 - 26.021 mm
Engine
ENG - 103