41. Engine Block Clean and Inspect
Engine Block Cleaning and InspectionTools Required
^ J8087 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 inch).
^ Bore the cylinder if gouges are deeper than 0.05 mm (0.002 inch).
^ Inspect for pitting in the cylinder walls deeper than 0.05 mm (0.002 inch).
^ Bore the cylinder if pitting is deeper than 0.05 mm (0.002 inch).
^ Inspect for scores is the cylinder walls deeper than 0.05 mm (0.002 inch).
^ Bore the cylinder if scores are deeper than 0.05 mm (0.002 inch).
4. Use the J8087 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 inch) of wear and/or taper may be reconditioned.
6. Recondition the cylinders with less 0.05 mm (0.002 inch) 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).