Method for roller tappet suspension in an internal combustion engine for removal of a camshaft or other components
US6497038B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2001 |
| Grant date | Dec 24, 2002 |
| Priority date | — |
| Expiry date | Aug 2, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4973
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
There is provided a method for suspending roller tappets in an internal combustion engine without removal of the cylinder head and gasket. The rocker arm assembly is removed. Each push rod is then removed and replaced with tappet suspension tool to engage a corresponding roller tappet. A suspension tool guide bar is then installed to connect to the tappet suspension tools. The roller tappets are then simultaneously moved to a raised position away from the camshaft forming a clearance between the roller tappets and camshaft bearings. The roller tappets are then secured in the raised position by a securing block. The camshaft can then be removed from the engine block. Alternatively, the rear half of the front cover can be removed by first removing the idler gears, followed by removal of the camshaft, and last removing the rear half of the front cover from the engine case.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.