Piston and Piston Pin
PISTON AND PISTON PIN1) Check the piston and piston pin for damage, cracks or wear. And check the piston ring groove for wear or damage. Replace if faulty.
2) Measure the clearance between piston and cylinder in each cylinder.If the clearance exceeds the standard, replace the piston, or rebore the cylinder so that an oversize piston can be used.
3) Make sure the piston pin can be inserted into the piston pin hole by a thumb at 20 degrees C (68 degrees F). Replace if faulty.
4) Check the snap ring installation groove (A) on the piston for burr. If necessary, remove burr from the groove so that the piston pin can lightly move.
5) Check the piston pin snap ring for distortion, cracks and wear.