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6.7L Cummins Cylinder Block – Preparatory Steps

Before cleaning or further disassembly of the block, perform a visual inspection to see if there is any damage
(cracks, fretting, etc.) that will prohibit reuse. Paying close attention to areas of the block that include:
• Main bearing caps and bores
• Camshaft bores
• Cylinder bores
• Tappet bores

• Cylinder block combustion deck

• Oil pan mounting surface
• Lubricating oil pump mounting area
• Water pump mounting area
• Front and rear of block sealing surfaces
• Lubricating oil cooler cavity.