PIAGGIO 500 cc - Starting Ring Gear and Freewheel; Idler Gear with Torque Limiter

6 - 7
6
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Starting ring gear and freewheel
- Check that the freewheel “rollers” and the starting ring
gear hub surface show no signs of anomalous wear
or dents.
- Check the hub outside diameter.
Hub outside diameter: Ø 45,665
+ 0.008
mm
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- Check the starting ring gear brass I.D.
- Check that the toothing shows no signs of wear.
N.B.: If the hub is damaged, replace the starting ring
gear and the free wheel. If only the brass is damaged,
it is sufficient to replace the starting ring gear assembly.
In this case also check the diameter and surface of the
driving shaft support. Replace the driving shaft if neces-
sary.
Brass I.D.: Ø 27
+ 0.020
mm
Idler gear with torque limiter
- Check the toothing out for signs of wear.
- Check the diameter of the two bearings.
Gear bearing diameter: Ø 12
- 0
mm
- Also check the bearings diameter on the flywheel
cover and engine crankcase.
Flywheel cover bearing diameter: Ø 12
+ 0.034
mm
Engine crankcase bearing diameter: Ø 12
+ 0.034
mm
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Flywheel and starting system
+ 0.005
+ 0.041
- 0.011
- 0.016
- 0.016