Piston, Engine
PISTON PIN OIL CLEARANCEUsing a caliper gauge, measure the inside diameter of the piston pin hole.
Piston Pin Hole Inside Diameter:
Using a micrometer, measure the piston pin diameter.
Piston Pin Diameter:
Subtract the piston pin diameter measurement from the piston pin hole diameter measurement.
Standard oil clearance 0.002 to 0.004 mm (-0.00004 to 0.00002 inch)
Maximum oil clearance 0.015 mm (0.0006 inch)
If the oil clearance is greater than the maximum, replace the piston and piston pin as a set.
Using a caliper gauge, measure the inside diameter of the connecting rod bushing.
Bushing Inside Diameter:
Subtract the piston pin diameter measurement from the bushing inside diameter measurement.
Standard oil clearance 0.005 to 0.011 mm (0.0002 to 0.0004 inch)
Maximum oil clearance 0.03 mm (0.0012 inch)
If the oil clearance is greater than the maximum, replace the bushing. If necessary, replace the connecting rod and piston pin as a set.