1. Calculate the difference between the cylinder bore diameter (direction Y) and the piston diameter. If the clearance is near or exceeds the service limit, inspect the piston and cylinder bore for excessive wear.

   Piston-to-Cylinder Bore Clearance
   Standard (New): | 0.006−0.065 mm (0.0002−0.0026 in.)
   Service Limit: | 0.065 mm (0.0026 in.)
   Oversize: | 0.050−0.070 mm (0.0020−0.0028 in.)
   Oversize Service Limit:
   | 0.070 mm (0.0028 in.)