Situ valve spring compression tool
AssigneeCummins Engine Company, Inc.
InventorsCharles R. Mote, Willard E. Fleetwood
Life of this patent
Estimating the term…
Abstract
The disclosure illustrates a valve spring compressor tool which may be used to remove heavy duty double valve springs from an engine with no more disassembly of the engine than removal of the rocker cover. The tool comprises a support bridge bolted to the rocker housing across the valves to be compressed. A plate having two cup-like recesses fits over the valve springs and a central sleeve passes through the plate to guide it for movement parallel to the normal direction of compression for the springs. A shaft is threaded into the cross arm and is aligned with the sleeve so that rotation causes it to exert a compressive force of great magnitude and retains the valve in the compressed position.
Claims6
A tool for in situ compression of a pair of valve spring assemblies positioned in a cylinder head of an internal combustion engine said valve assemblies having upper ends adapted to be compressed by a single input through an element abutting both of said valve spring assemblies and guided for movement parallel to the direction of movement of the upper end of said valve spring assemblies by a pin secured to said cylinder head, said cylinder head having a cover removably connected thereto for exposing said valve spring, said tool comprising:
- an elongated support element releasably connectable to said head for bridging the space above said valve spring assembly;
- a plate having a recess conforming to and receiving the upper end of said valve spring assembly;
- a sleeve telescoped over said pin and connectable with said plate for guiding said plate substantially parallel to the direction of movement of the upper end of said valve spring assembly during compression thereof;
- and,
- an element threadedly engaging said support element and positioned in alignment with said plate for compressing said valve spring assembly in response to rotation of said threaded element.
Dependencies are inferred from the claim text.