like 50 2T 1 Manuale-dofficina : Pagina 70

          6. CYLINDER HEAD/CYLINDER/PISTON                                     LIKE 50 2T


 PISTON RING INSPECTION
 Measure each piston ring end gap.
 Service Limits: Top/Second
                 0.40mm replace if over


 Set   each piston ring squarely into the
  cylinder using the piston and measure
  the end gap.




                                                 
 CONNECTING ROD SMALL END
 INSPECTION
 Install the piston pin and bearing in the
 connecting rod small end and check for
 excessive play.
 Measure the connecting road small end I.D.
 Service Limit:
                17.03mm replace if over




                                                                   Piston

 PISTON/CYLINDER INSTALLATION
 First install the expander in the second ring                   Top Ring (1st Ring)
 groove.
 Then install the top and second rings in
 their respective ring grooves.
 The piston rings should be pressed into the                          Second Ring
 grooves with even force.                            Expander
 After installation, check and make sure that
 each ring is flush with the piston at several
 points around the ring.
 A ring that will not compress means that the
 ring groove has carbon deposits in it and
 should be cleaned.


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