Engine valve train module

Claim 1

A valve train with rocker positioner that is adapted to be assembled as a valve train module, tested, shipped and then mounted to the cylinder head of an internal combustion engine in position to effect operation of the inlet and exhaust valves associated with the cylinder head via rocker arm assemblies pivotably supported on a first rocker shaft having axially spaced apart mounting apertures therethrough and the rocker arm assemblies pivotably supported on a second rocker shaft having axially spaced apart mounting apertures therethrough, said rocker arm assemblies being adapted to be actuated by an engine driven camshaft of the engine, said rocker positioner including shaft retainer means to effect retention of said first rocker shaft and said second rocker shaft in spaced apart parallel alignment with respect to each other; rocker positioning means to effect and retain a predetermined axial operative position of said rocker arm assemblies on a respective associate said first rocker shaft and said second rocker shaft; anti-rotation means to maintain the angular position of said rocker arm assemblies at a position corresponding substantially to the operative position of each of said rocker arm assemblies as installed on the cylinder head of an engine; and, fastener means operatively associated with said rocker positioner and said first and second rocker shafts to retain said elements together as a valve train module and then to effect attachment of said rocker positioner and said first and second rocker shafts to the cylinder head of an engine whereby said valve train module will be secured in position to effect operation of said inlet and exhaust valves.