Mobile Driven Half Pulley; Fixed Driven Half Pulley Bearings Assembly - PIAGGIO 500 cc Service Manual

Automatic transmission

Mobile driven half pulley

- Check the belt contact surface out for signs of wear.
- Remove the 2 internal and external O rings.
- Measure the mobile half pulley bush I.D.
Maximum allowed diameter: 50.08 mm
Standard diameter: 50.085 mm

Fixed driven half pulley bearings assembly

- Fit a new roller bearing using the specific tool
N.B.: Put the bearing and the incorporated oil seal on
the outside.
- Hold the half pulley to avoid damaging the thread.
Operate with tool 001467Y002, with the driven pulley
unit completely assembled.
Specific tool:
Driven pulley roller case tool 020478Y
Bell
- Fit a new ball bearing by means of the specific tool.
Specific tools:
Handle
37 mm adapter
20 mm guide
- Fit the stop snap ring.
Driven pulley assembly
- Fit the new oil seals
- Fit the new O rings
N.B.: The O rings come supplied in 2 sizes. The larger
one is installed on the work end radius, half pulley base.
- Fit the half pulley on the bush taking care not to
damage the upper O ring.
3 - 8
001467Y002
020376Y
020477Y
020363Y
05_026
05_027
05_028
05_029