Tools Required

J 8087 Cylinder Bore Gauge

1. Clean the following components:

•	Use solvent to clean the engine block.

•	Clean the gasket surfaces.

•	Clean the coolant passages.

•	Clean the oil passages.

2. Inspect the following for cracks:

•	Inspect the cylinder walls for cracks.

•	Replace the engine block if any cracks are evident.

•	Inspect the coolant jackets for cracks.

•	Replace the engine block if any cracks are evident.

•	Inspect the main bearing insert cavities for cracks.

•	Replace the engine block if any cracks are evident.

3. Inspect for the following in the cylinder walls:

•	Inspect for gouges in the cylinder walls deeper than 0.05 mm (0.002 in).

•	Bore the cylinder if gouges are deeper than 0.05 mm (0.002 in).

•	Inspect for pitting in the cylinder walls deeper than 0.05 mm (0.002 in).

•	Bore the cylinder if pitting is deeper than 0.05 mm (0.002 in).

•	Inspect for scores is the cylinder walls deeper than 0.05 mm (0.002 in).

•	Bore the cylinder if scores are deeper than 0.05 mm (0.002 in).




4. Use the J 8087 to measure the cylinder bore at the directed points (1, 2) for the following conditions:

•	Measure for wear.

•	Measure for taper.

•	Measure for runout.

•	Measure for ridging.

5. The cylinders with less than 0.05 mm (0.002 in) of wear and/or taper may be reconditioned.
6. Recondition the cylinders with less 0.05 mm (0.002 in) with a hone and fitted with the appropriate size select fit piston (providing the cylinder was not fitted with the largest size select fit piston).