Pistons Inspection

Pistons

Inspection

1. Check the piston for distortion or cracks.

NOTE: If cylinder is bored, an oversized piston must be used.




2. Measure piston diameter at distance A from the bottom of the skirt.




3. Calculate the difference between the cylinder bore diameter and piston diameter.
If the clearance is near or exceeds the service limit, inspect the piston and cylinder block for excessive wear.

Oversize Piston Diameter:
0.25: 75.23 - 75.24 mm (2.9618 - 2.9622 in)
0.50: 75.48 - 75.49 mm (2.9716 - 2.9720 in)