40. Engine Block Clean and Inspect
Engine Block Cleaning and InspectionTools 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 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 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 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).