METHOD FOR CHANGING OIL FILTERING SYSTEM IN INTERNAL COMBUSTION ENGINE OR THE LIKE, AND MECHANISM THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a method and mechanism for changing an exiting so-called inner filter type oil filtering system into a cartridge type oil filtering system of higher performance. SOLUTION: A hollow mounting bolt 12, which is common to a base part thread part of a mounting bolt 53 mounting a filter chamber cap 52 of an existing inner filter type oil filter, is enveloped. This bolt 12 is provided with a flange part in the intermediate, and a mounting external thread 12a and a cartridge use external thread 12b respectively in both ends. A cartridge holder 10 is mounted in a location of an oil outlet route 7 of a crankcase 3 by the mounting external thread 12a. Next, relating to a cartridge use external thread part, a cartridge 11 is screwed. In the cartridge holder 10, communication chambers 10a, 10b are opened, in order to communicate from an oil inlet route 6 to an oil outlet route 7 via the cartridge 11.