Piston bore inner diameter
Measure the inside diameter of the piston pin bore using a bore gauge.
- Standard diameter: 27.997-28.005 mm
Piston pin outer diameter
Using a micrometer, measure the outside diameter of the piston pin.
- Standard diameter: 27.994-28.000 mm
Calculation of clearance between piston and piston pin
(Gap) = (Piston pin hole diameter) - (Piston pin outer diameter)
- Standard clearance: 0.002-0.006mm
If the clearance is excessive, replace the piston and piston pin assembly.