Inspection

Block and Piston Inspection

Inspection

1. Block and Piston - Inspection

1. Check the pistons for distortion or cracks. Check the pistons for distortion or cracks.
Measure the piston skirt diameter at a point 14 mm (0.55 in) from the bottom of the skirt.















2. Measure the piston skirt diameter at a point 14 mm (0.55 in) from the bottom of the skirt.

2. Cylinder Block - Inspection

1. Measure the wear and taper Y at three levels inside each cylinder as shown. If measurements in any cylinder are beyond the oversize bore service limit, replace the engine block.











2. Hone any cored or scratched cylinder bores if needed.

3. Check the top of the engine block for warpage. Measure along the edges and across the center as shown.
















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