JDG476 Crankshaft Rear Main Seal Installer for John Deere Servicegard 4045, 6076, 6081 and 6466 7.6L 8.1L Engines. For JT30040B or KCD10002A. Also Supersedes JT30040 and ST-218. for John Deere Use to simultaneously install the Teflon unitized seal and wear sleeve on the engine rear crankshaft flange.