Inspecting The Rollers Case - PIAGGIO MP3 400 i.e. Service Manual

Engine
- Move the belt downwards.
- Suitable support the roller contrast and extract
the mobile driving half-pulley with the relevant
bushing and the rear washer, being careful not to
make the rollers come out.

Inspecting the rollers case

- Check that the inside bushings shown in the figure are not worn and measure the inside diameter.
CAUTION
DO NOT LUBRICATE OR CLEAN THE BUSHINGS
Characteristic
Maximum admissible diameter:
30.12 mm
Standard diameter:
30.021 mm
- Measure the pulley sliding bushing outside di-
ameter shown in the figure.
Characteristic
Minimum admissible diameter
Ø 29.95 mm
Standard diameter:
Ø 29.959 mm
- Check that the rollers are not damaged or worn.
Characteristic
Minimum admissible diameter
Ø 24.5 mm
Standard diameter:
Ø 24.9 mm
ENG - 14
MP3 400 i.e.