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3. 2 A Systems Approach PowerPoint® Presentation Prepared by René Green

4. 3 Chapter 7

5. 4 yChapter Overview yThis chapter instructs students in engine removal and disassembly of the cylinder head and cylinder block. It further discusses, in depth, the identification and cleaning of engine parts and crack repair.

6. 5 yChapter Objectives yPrepare an engine for removal. yExplain what is involved in lifting an engine. yDescribe how to disassemble and inspect an engine. yName the three basic cleaning processes. yIdentify the different types of cleaning equipment. yDescribe the common ways to repair cylinder head cracks.

7. 6 zPreparing the Engine for Removal zLifting an Engine zEngine Disassembly and Inspection yCylinder Head Removal yCylinder Head Disassembly yCylinder Block Disassembly zCleaning Engine Parts yTypes of Soil Contaminants xWater-soluble soils

8. 7 xOrganic oils Petroleum byproducts Combustion byproducts Coatings xRust xScale yCleaning with Chemicals xParts washers xSoak tanks xHot spray tanks yThermal Cleaning

9. 8 yAbrasive cleaners xAbrasive blaster xParts tumbler xVibratory cleaning xCleaning by hand yAlternative Cleaning Methods xUltrasonic cleaning xCitrus chemicals xSalt bath zCrack Repair

10. 9 yCrack Detection Methods yFurnace Welding Crack Repairs yRepairing Aluminum Heads xCracks in the aluminum between the valve seat rings xCracks coming from the coolant passages xCracks across the main oil gallery xDetonation damage xMeltdown damage xCoolant-related metal erosion