PIAGGIO Beverly Tourer 300 i.e. Service Station Manual page 15

Beverly Tourer 300 i.e.
- Carefully clean the sealing ring housings.
- Measure the coupling clearance between the
sealing rings and the piston grooves using suitable
sensors, as shown in the diagram.
- If the clearance is greater than that indicated in
the table, replace the piston.
N.B.
MEASURE THE CLEARANCE BY INSERTING THE BLADE
OF THE FEELER THICKNESS GAUGE FROM THE SECOND
SEAL SIDE.
Fitting clearance
Top piston ring - standard coupling clearance
Top piston ring - maximum clear-
0.015 - 0.06 mm
ance allowed after use
ring - standard coupling clearance
Middle piston ring - maximum clearance al-
lowed after use
0.07 mm
ard coupling clearance
ring - maximum clearance allowed after use
0.07 mm
- Check that the head coupling surface is not worn
or misshapen.
- Pistons and cylinders are classified according to
their diameter. The coupling must be made with
those of the same type (M-M, N-N, O-O, P-P).
Characteristic
Maximum allowable run-out:
0.05 mm
Crankcase - crankshaft - connecting rod
Titolo
Crankshaft
Axial clearance between crankshaft and connecting rod
Middle piston
0.07 mm
0.015 - 0.06 mm
oil scraper ring - stand-
oil scraper
0.015 - 0.06 mm
C
RANKSHAFT
Durata/Valore Testo Breve (< 4000 car.)
Axial clearance between
crankshaft and connecting rod
Characteristics
Indirizzo Immagine
CHAR - 15