Remove crankshaft rear oil seal (Refer to 9 - ENGINE/ENGINE BLOCK/CRANKSHAFT OIL SEAL - REAR - REMOVAL).Remove oil pan (Refer to 9 - ENGINE/LUBRICATION/OIL PAN - REMOVAL).Remove oil seal retainer screws .Remove oil seal retainer .Clean engine block and retainer of oil and gasket material. Make sure surfaces are clean and free of oil.