A tool for removing valve springs and seals from an engine's intake and exhaust valves includes a bracket having apertures spaced therealong and for receiving fastening members therethrough. The tool further includes a plurality of support pedestals provided with channels extending therethrough and for receiving the fastening members respectively so that the bracket is maintained at a substantially stable position. The tool also includes a mechanism for simultaneously compressing a valve spring by exerting pressure upon a valve head keeper and retainer, thereby releasing associated locks keepers so that a user can remove the valve springs and valve seals from the valve head. The compressing mechanism cooperates with the pedestals and the bracket and is rotatable about a fulcrum axis traversing the pedestals wherein the fulcrum axis extends along a horizontal plane subjacent the bracket.
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0. 19. A tool for allowing an operator to remove valve springs and valve seals from an engine's intake and exhaust valves without requiring the removal of the engine from a support frame, said tool comprising:
a support structure adapted to be mounted fixedly relative to an engine cylinder head;
and means for compressing a valve spring by exerting pressure upon a valve retainer in a compression direction, thereby releasing associated keepers so that a user can readily remove the valve springs and valve seals from said cylinder head, said means for compressing cooperating with said support structure and being manually rotatable about a fulcrum axis positioned substantially orthogonally skew relative to said compression direction wherein said means for compressing a shaft rotatably mounted co-axial with said fulcrum axis and wherein said pressure is generated by rotation of said shaft.
0. 28. A method of using a tool in conjunction with an engine including valves, the method comprising the steps of:
providing a tool comprising an arcuate bracket formed of rigid material, said bracket having a plurality of apertures spaced along a perimeter thereof, a plurality of fastening members positionable through said apertures, a plurality of elongated support pedestals having longitudinal channels extending axially therethrough, and means for compressing a valve spring rotatable about a fulcrum axis;
securing said bracket at a substantially stable and elevated position above a cylinder head by positioning each fastening member through one of said bracket apertures, aligning each support pedestal channel with one of said bracket apertures, positioning each fastening member through one of said channels of said support pedestal, and threadably engaging each fastening member with a threaded aperture provided on said cylinder head; and
using said means for compressing to compress a valve spring by exerting pressure upon a valve retainer to release associated valve keepers.
7. A tool for allowing an operator to remove valve springs and valve seals from an engine's intake and exhaust valves without requiring the removal of the engine from a support frame, said tool comprising:
an arcuate bracket formed from rigid material and for distributing external forces away from an engine valve cylinder head, said bracket having a plurality of apertures spaced along a perimeter thereof and comprising a plurality of fastening members threadably positionable therethrough for securing said bracket adjacent the valve cylinder head;
a plurality of elongated support pedestals having vertically disposed longitudinal axes and being provided with threaded channels extending axially therethrough respectively, said pedestals being aligned and abutted with the bracket apertures for receiving said fastening members therethrough so that said bracket can be maintained at a substantially stable and elevated position during operating conditions; and
means for compressing a valve spring by exerting pressure upon a valve head keeper and retainer, thereby releasing associated locks keepers so that a user can readily remove the valve springs and valve seals from the valve head, said compressing means cooperating with said pedestals and said bracket and being manually rotatable along a selected radial direction and about a fulcrum axis traversing said pedestals.
13. A tool for allowing an operator to remove valve springs and valve seals from an engine's intake and exhaust valves without requiring the removal of the engine from a support frame, said tool comprising:
an arcuate bracket formed from rigid material and for distributing external forces away from an engine valve cylinder head, said bracket having a plurality of apertures spaced along a perimeter thereof and comprising a plurality of fastening members threadably positionable therethrough for securing said bracket adjacent the valve cylinder head;
a plurality of elongated support pedestals having predetermined uniform axial lengths respectively, said pedestals further having vertically disposed longitudinal axes and being provided with channels extending axially therethrough respectively, said pedestals being aligned and abutted with the bracket apertures for receiving said fastening members therethrough so that said bracket can be maintained at a substantially stable and elevated position during operating conditions; and
means for simultaneously compressing a valve spring by exerting pressure upon a valve head keeper and releasing associated locks keepers so that a user can readily remove the valve springs and valve seals from the valve head, said compressing means cooperating with said pedestals and said bracket and being manually rotatable along a selected radial direction and about a fulcrum axis traversing said pedestals wherein the fulcrum axis extends along a horizontal plane subjacent said bracket.
0. 1. A tool for allowing an operator to remove valve springs and valve seals from an engine's intake and exhaust valves without requiring the removal of the engine from a support frame, said tool comprising:
a bracket formed from rigid material and for distributing external forces away from an engine valve head, said bracket having a plurality of apertures spaced along a perimeter thereof and comprising a plurality of fastening members threadably positionable therethrough for securing said bracket adjacent the valve head;
a plurality of support pedestals having vertically disposed longitudinal axes and being provided with a channel extending axially therethrough, said pedestals for receiving said fastening members therethrough so that said bracket can be maintained at a substantially stable and elevated position during operating conditions; and
means for compressing a valve head keeper and associated locks so that a user can readily remove the valve springs and valve seals from the valve head, said compressing means cooperating with said pedestals and said bracket and being manually rotatable along a selected radial direction and about a fulcrum axis traversing said pedestals.
0. 2. The tool of
an elongated anchor bolt defining the fulcrum axis and being disposed along a substantially horizontal plane, said bolt having a threaded end portion and an oppositely disposed head portion extending outwardly from said bracket respectively;
a plurality of fingers secured to said bolt and extending outwardly therefrom along a generally perpendicular path to said bolt, each said finger having an inner surface area provided with a longitudinal axis offset from a vertical plane so that the valve spring can be effectively engaged during operating conditions; and
a plurality of stop members adjustably engaged with said bolt and for defining a linear path along which said bolt can be positioned, one said stop members protruding outwardly and orthogonally from said bolt and adjacent said head portion thereof;
wherein said fingers are rotated downwardly onto the valve spring and the valve head keeper which causes release of the associated locks, said fingers being rotatable upwardly such that the valve springs and the valve seals can be removed.
0. 3. The tool of
0. 4. The tool of
0. 5. The tool of
0. 6. The tool of
8. The tool of
an elongated anchor bolt defining the fulcrum axis and being disposed along a substantially horizontal plane, said bolt having a threaded end portion and an oppositely disposed head portion extending outwardly from said bracket respectively;
a plurality of fingers secured to said bolt and extending outwardly therefrom along a generally perpendicular path to said bolt, each said finger having an inner surface area provided with a longitudinal axis offset from a vertical plane so that the valve spring can be effectively engaged during operating conditions; and
a plurality of stop members adjustably engaged with said bolt and for defining a linear path along which said bolt can be positioned, one said stop members protruding outwardly and orthogonally from said bolt and adjacent said head portion thereof.
9. The tool of
10. The tool of
11. The tool of
12. The tool of
14. The tool of
an elongated anchor bolt defining the fulcrum axis and being disposed along a substantially horizontal plane, said bolt having a threaded end portion and an oppositely disposed head portion extending outwardly from said bracket respectively;
a plurality of fingers secured to said bolt and extending outwardly therefrom along a generally perpendicular path to said bolt, each said finger having an inner surface area provided with a longitudinal axis offset from a vertical plane so that the valve spring can be effectively engaged during operating conditions; and
a plurality of stop members adjustably engaged with said bolt and for defining a linear path along which said bolt can be positioned, one said stop members protruding outwardly and orthogonally from said bolt and adjacent said head portion thereof.
15. The tool of
16. The tool of
17. The tool of
18. The tool of
0. 20. A tool according to claim 19, said fulcrum axis defined by said shaft.
0. 21. A tool according to claim 20, said shaft being rotatably supported by the support structure.
0. 22. A tool according to claim 19, said support structure comprising:
a bracket formed from rigid material and for distributing external forces away from said engine cylinder head, said bracket having a plurality of apertures spaced along a perimeter thereof and comprising a plurality of fastening members threadably positionable therethrough for securing said bracket adjacent said cylinder head; and
a plurality of support pedestals having vertically disposed longitudinal axes and being provided with a channel extending axially therethrough, said pedestals for receiving said fastening members therethrough so that said bracket can be maintained at a substantially stable and elevated position during operating conditions.
0. 23. A tool according to claim 22, wherein said means for compressing comprises:
an elongated anchor bolt defining said fulcrum axis and being disposed along a substantially horizontal plane, said bolt having a threaded end portion and an oppositely disposed head portion extending outwardly from said bracket respectively;
a plurality of fingers secured to said bolt and extending outwardly therefrom along a generally perpendicular path to said bolt, each said finger having an inner surface area provided with a longitudinal axis offset from a vertical plane so that the valve retainer can be effectively engaged during operating conditions; and
a plurality of stop members adjustably engaged with said bolt and for defining a linear path along which said bolt can be positioned, one of said stop members protruding outwardly and orthogonally from said bolt and adjacent said head portion thereof;
wherein said fingers are rotated downwardly onto the valve retainer which causes release of the associated keepers, said fingers being rotatable upwardly such that the valve springs and the valve seals can be removed.
0. 24. A tool according to claim 23, wherein said bolt head portion has a substantially hexagonal shape so that a user can readily rotate same by employing a conventional ratchet and socket.
0. 25. A tool according to claim 22, wherein said bracket has a generally U-shape.
0. 26. A tool according to claim 23, wherein said fingers are medially spaced along said bolt and within an inner perimeter of said bracket, said fingers terminating above a top surface of said bracket.
0. 27. A tool according to claim 23, wherein said bolt further includes an integrally disposed collar portion extending radially therefrom adjacent said head portion, said collar portion being engageable with another said stop members as said bolt is selectively positioned along the linear path.
0. 29. The method of claim 28 further comprising the step of removing valve springs and valve seals from the valve while said valve keepers are released.
0. 30. The method of claim 28 wherein after said securing step, said fulcrum axis is in a position substantially parallel to said bracket.
0. 31. The method of claim 28 wherein said means for compressing is used in cooperation with said support pedestals and said bracket, and manually rotatable along a selected radial direction and about said fulcrum axis.
0. 32. The tool of claim 7 wherein said fastening members are threadably positionable through said apertures in said bracket.
0. 33. The tool of claim 13 wherein said fastening members are threadably positionable through said apertures in said bracket.
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Not Applicable.
Not Applicable.
Not Applicable.
1. Technical Field
This invention relates to a component removal tool and, more particularly, to a tool for removing valve springs and valve guide seals from an engine.
2. Prior Art
An automotive engine “valve job” involves removal of the valve cover and cylinder head, followed by disassembly and removal of each valve from the cylinder head for replacement or repair.
The valves are held in place in the cylinder head, each by a compression spring acting on the valve stem to keep it tightly closed. A dish-shaped retainer centered on top of the valve spring has a frusto-conical inner ramp surface which engages a pair of frusto-conical “keepers”, forcing them into positive locking engagement with the valve stem. The two keepers are halves of a split ring, together forming a frusto-conical ring to surround and engage the inner ramp of the retainer. The inner surfaces of the keepers together form one or more circumferential keys to engage corresponding circumferential keyways near the top of the valve stem. The conical inner surface of the retainer engages the conical outer surface of the keepers to force them into locking engagement with the valve stem.
To disassemble and remove a valve, it is first necessary to further compress the valve spring, move the retainer out of engagement with the keepers, remove the keepers which are now loose, remove the retainer and spring (which are now free), then slide the valve stem (which is now free) out through the underside of the cylinder head.
The procedure described above is usually performed by using a C-clamp or the like to compress the valve spring, then using one's fingers or needle nose pliers to remove the keepers. Another expedient is the use of a lever having a notch at its end to straddle the valve stem, the fulcrum of the lever being anchored to a rocker arm stud. The lever is pivoted about the rocker arm stud to thereby compress the valve spring and permit manual removal of the keepers. All of these methods, though, still require the complete removal of the engine block from the automobile and then the cylinder head from the engine block, and other time consuming preparatory procedures.
Accordingly, a need remains for a tool for removing valve springs and valve guide seals from an engine to overcome the above noted shortcomings. The present invention satisfies such a need by providing a convenient, easy to use, effective and time saving tool for valve spring removal. Such a tool takes advantage of existing bolt holes in the engine block and thus requires no removal or modification of an engine block in order to use.
In view of the foregoing background, it is therefore an object of the present invention to provide a tool for removing valve springs and valve guide seals from an engine. These and other objects, features, and advantages of the invention are provided by a tool for allowing an operator to remove valve springs and valve seals from an engine's intake and exhaust valves without requiring the removal of the engine from a support frame.
The tool includes an arcuate bracket, preferably having a generally U-shape for extending about the engine valve head 31 and formed from rigid material for distributing external forces away from an engine valve cylinder head 31. Such a bracket 20 has a plurality of apertures 21 spaced along a perimeter thereof, including a plurality of fastening members 22 threadably positionable therethrough for advantageously securing the bracket 20 adjacent the valve cylinder head 31.
As is shown in
The tool 10 also includes a mechanism 50 for simultaneously compressing a valve spring 32 by exerting pressure upon a valve head keeper retainer 90, and thereby releasing associated locks keepers 91 so that a user can readily remove the valve springs 32 and valve seals 33 from the valve head 31. Such a compressing mechanism 50 cooperates with the pedestals 40 and the bracket 20 and is manually rotatable along a selected radial direction and about a fulcrum axis traversing the pedestals 40 wherein the fulcrum axis extends along a horizontal plane subjacent the bracket 20. The compressing mechanism 50 conveniently decreases the amount of force needed to compress the valve head keeper for compression, allowing for easier and more rapid replacement of the valve spring 32 and seal 33.
As can be seen in
The compressing mechanism 50 further includes a plurality of fingers 54 secured to the bolt 51 and extending outwardly therefrom along a generally perpendicular path to the bolt 51. The fingers 54 are medially spaced along the bolt 51 and within an inner perimeter of the bracket 20 and terminate above a top surface 23 of the bracket 20. Each such finger 54 has an inner surface area 55 and a longitudinal axis offset from a vertical plane so that the valve spring 32 retainer 90 can be effectively engaged during operating conditions.
The mechanism 50 also includes a plurality of stop members 56 adjustably engaged with the bolt 51 for defining a linear path along which the bolt 51 can be positioned. The stop members 56 advantageously prevent the bolt 51 from becoming disengaged from the bracket 20, effectively avoiding damage to the engine valve cylinder head 31. One such stop member 56 protrudes outwardly and orthogonally from the bolt 51 and adjacent the head portion 53 thereof. The bolt 51 further includes an integrally disposed collar portion 57 extending radially therefrom adjacent to the head portion 53. Such a collar portion 57 is engageable with another of the stop members 56 as the bolt 51 is selectively positioned along the linear path.
While the invention has been described with respect to a certain specific embodiment, it will be appreciated that many modifications and changes may be made by those skilled in the art without departing from the spirit of the invention. It is intended, therefore, by the appended claims to cover all such modifications and changes as fall within the true spirit and scope of the invention.
In particular, with respect to the above description, it is to be realized that the optimum dimensional relationships for the parts of the present invention may include variations in size, materials, shape, form, function and manner of operation. The assembly and use of the present invention are deemed readily apparent and obvious to one skilled in the art.
Qualman, Richard K., Qualman, Karen A.
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