26. Engine Block Clean and Inspect

ENGINE BLOCK (UNIT REPAIR)

CLEAN AND INSPECT





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 wall 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 wall deeper than 0.05 mm (0.002 inch).
^ Bore the cylinder if scores are deeper than 0.05 mm (0.002 inch).





4. Use a cylinder bore gauge to measure the cylinder bore for the following conditions:
^ Measure for wear.
^ Measure for taper.
^ Measure for runout.
^ Measure for ridging.
If wear and/or taper is less than 0.05 mm (0.002 inch), cylinder must be reconditioned. Recondition the cylinders with less than 0.05 mm (0.002 inch) of wear and/or taper with a hone and fit with the appropriate size select fit piston (providing the cylinder was not fitted with the largest size select lit piston). If wear and/or taper is over 0.05 mm (0.002 inch) cylinder must be bored.