Inspecting the clutch drum
- Check that the clutch bell is not worn or damaged.
- Measure the clutch bell inside diameter.
Characteristic
Max. value clutch housing
Max. value: Ø 134.5 mm
clutch housing standard value
Standard value: Ø 134 - 134.2 mm
Checking the bell working surface eccentricity
- Install the bell on a driven pulley shaft using 2
bearings (inside diameter: 15 and 17 mm).
- Lock with the original spacer and nut.
- Place the bell/shaft unit on the support to check
the crankshaft alignment.
- Using a feeler dial gauge and the magnetic base,
measure the bell eccentricity.
- Repeat the measurement in 3 positions (Central,
internal, external).
- If faults are found, replace the bell.
Specific tooling
020074Y Support base for checking crankshaft
alignment
020335Y Magnetic mounting for dial gauge
Characteristic
clutch housing inspection: Limit eccentricity.
Admissible limit eccentricity: 0.15 mm
Vespa LX - S 125 3V ie 150 3V ie (2012) Engine
ENG - 119
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