PIAGGIO 500 cc, Service Manual

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3 - 10
Mobile driving half pulley
- Check that the internal bushes shown in the figure
show no signs of anomalous wear. Measure the I.D.
Maximum allowed diameter: 30.12 mm
Standard diameter: 30.021 mm
- Do not lubricate or clean the bushes.
- Measure the O.D. of the pulley sliding bush shown in
the figure.
Minimum allowed diameter: Ø 29.95 mm
Standard diameter: Ø 29.959 mm
Automatic transmission
05_035
- Check that the rollers are not damaged or worn.
Minimum allowed diameter: Ø 24.5 mm
Standard diameter: Ø 24.9 mm
- Check that the shoes of the roller stop plate are not
worn.
- Check the rollers housing and belt contact surfaces
condition on both half pulleys.
05_036
05_033
- Compress the spring and insert the clutch on the
driven pulley bush.
N.B. : Take care not to damage the sheath or the bush
threaded end.
- Screw the ring nut manually and then tighten it with
the specific wrench to the prescribed torque.
Tightening torque:
Clutch ring nut: 65 - 75 N·m
Specific tool:
55 mm wrench:
020444Y009
- To facilitate the reassembly operation, turn the mobile
driven pulley and fit the belt on the smaller diameter.
05_032
Clutch reassembly
- Prepare the specific tool as already done during the
disassembly phase;
- Preassemble the driven pulley unit with the driving
belt according to its direction of rotation.
- Insert the driven pulley unit, spring with sheath and
clutch in the tool.
Specific tools:
Driven pulley spring compressor
020444Y
Adapter ring 020444Y010
Warning