METHOD OF INSTALLING AN OIL PAN HEATER ON AN OIL PAN MOUNTEDON AN ENGINE BLOCK

摘要

A method and apparatus are provided for installing an oil pan heater on an o il pan while the oil pan is mounted on an engine block. Oil is drained from the engine oil pan. Then the engine oil pan is pierced to provide a pilot hole having pierced en ds extending into the engine oil pan. A circular chamfered groove is formed surrounding t he pilot hole so as to provide an oil pan thickness at a base of the chamfered groove. A pull is inserted into the oil pan through the pilot hole to engage an internal portion of the oil pan surrounding the pilot hole. The pull extracts a circular slug from the oil p an and a substantially circular hole is formed in the oil pan. An expandable heater bushing is inserted in the substantially circular hole. The heater bushing has an expandable tubular section extending from an enlarged head. The tubular section is crimped and the enlarged head is sealed to the oil pan. Then the heater is attached to the enlarged head.