PRE-RELEASE
Engine Block Cleaning and Inspection
| Engine Block Cleaning and Inspection |
Special Tools
EN-8087 Cylinder Bore GaugeFor equivalent regional tools, refer to Special Tools .
| 1. |
Clean the sealing material from the gasket mating surfaces (2).
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| 2. |
Clean the engine block (1) and lower crankcase in a cleaning tank with solvent appropriate for aluminum.
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| 3. |
Flush the engine block with clean water or steam.
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| 4. |
Clean the oil passages.
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| 5. |
Clean the blind holes.
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| 6. |
Spray the cylinder bores and the machined surfaces with engine oil.
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| 7. |
Inspect the threaded holes. Clean the threaded holes with a rifle brush. If necessary, drill out the holes and install thread inserts.
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| 8. |
Use a straight edge and a feeler gauge to check the deck surface (1) for flatness. Refer to Engine Mechanical Specifications . Replace the block if it does not comply with the specified dimensions. NEVER machine the engine block. 
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| 9. |
Inspect the oil pan rail for nicks. Inspect the front cover attaching area for nicks. Use a flat mill file to remove any nicks.
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| 10. |
Clean the sealing material from the gasket mating surfaces on the lower crankcase engine block side (1).
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| 11. |
Clean the sealing material from the gasket mating surfaces on the lower crankcase oil pan side (1).
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| 12. |
Inspect the crankshaft main bearing bores. Use the
EN-8087
gauge (1) to measure the bearing bore concentricity and alignment.
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| 13. |
Replace the engine block and bed plate if the crankshaft bearing bores are out of specification.
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| 14. |
Inspect the cylinder bores using the
EN-8087
gauge (1). Inspect for the following items:
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Wear
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Taper
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Runout
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Ridging
Refer to Engine Mechanical Specifications for specifications. |
| 15. |
If the cylinder bores are out of specification, replace the block.
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