Engine Block Cleaning and Inspection
Engine Block Cleaning and inspectionTools Required
^ J 8087 Cylinder Bore Gage
^ J 42385-100 Head/Main Bolt Thread Repair Kit
1. Clean the following areas:
Notice: Do not use a caustic solution to clean the aluminum engine block.
Important: When cleaning the engine block in a thermal type oven, do not exceed 450°F (232°C).
^ The engine block in the solvent, to remove all sludge, dirt, or debris
Caution: Refer to Safety Glasses Caution in Service Precautions.
^ Dry the block with compressed air.
^ The gasket surfaces
^ The coolant passages
^ The oil galleries
^ The main bearing caps
^ The engine block cylinder head bolt holes for threadlocking material
Thread repair driver tool J 42385-107 may be used to clean the threads of old threadlocking material.
2. Inspect the following areas:
^ The cylinder walls for excessive scratches, gouging, or ring ridge
^ The cylinder bores for excessive ring ridge at the top of the cylinder
^ The coolant jacket for cracks
^ The valve lifter bores for excessive scoring or wear
^ The crankshaft bearing webs for cracks
^ The gasket sealing surfaces for excessive scratches or gouging
^ The oil galleries for restrictions
^ All threaded bolt holes for damage
3. Measure the following areas:
^ The cylinder bores for taper
^ The cylinder bores for excessive ring ridge at the top of the cylinder