people 125 Manuel atelier : Page 91

          8. CYLINDER/PISTON                                                           PEOPLE 125/150




 Measure the piston O.D.
   Take measurement at 9mm from the
   bottom and 90° to the piston pin hole.

 (125cc) Service Limit: 52.3mm replace if
 below
 (150cc) Service Limit: 57.3mm replace if
 below
 Measure the piston-to-piston pin clearance.
 Service Limit: 0.02mm replace if over


 CYLINDER INSPECTION
 Inspect the cylinder bore for wear or damage.
 Measure the cylinder I.D. at three levels of
 top, middle and bottom at 90° to the piston
 pin (in both X and Y directions).
 (125cc) Service Limit: 52.50mm repair or
 replace if over
 (150cc) Service Limit: 57.50mm repair or
 replace if over
 Measure the cylinder-to-piston clearance.



 The true roundness is the difference between
 the values measured in X and Y directions.
 The cylindricity (difference between the
 values measured at the three levels) is subject
 to the maximum value calculated.                         Top
 Service Limits:
   True Roundness: 0.05mm repair or replace
                      if over                          Middle
   Cylindricity: 0.05mm repair or replace if over
                                                       Bottom




                                                    Inspect the top of the cylinder for warpage.
                                                    Service Limit: 0.05mm repair or replace if over

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