Removal/replacement of engine valve springs
OwnerBrice Harmandinventor
Life of this patent
Estimating the term…
Abstract
The detached cylinder head is placed on a table or other flat surface which has a recessed area within which is retained a deformable elastic bladder. Air, water or some other fluid is introduced into the bladder causing it to expand so that it conforms to the chambers within the cylinder head. The pressure of the expanded bladder within the chamber forces the valve upward against the valve seat. Once the valve is pressed upward against the valve seat, the valve can be disassembled by depressing the spring and removing the fastener, so that the spring can be removed, or the spring can be put in place and the valve reconnected.
Claims17
A method for improving access for removal or replacement of at least one valve spring in a cylinder head having a plurality of chambers with a corresponding plurality of valves when said cylinder head is disassembled from an engine block, the method which comprises:
- disposing a deformable bladder within a flat surface, said deformable bladder having a length sufficient to span said plurality of chambers;
- placing said cylinder head against said flat surface so that said plurality of chambers is positioned over said deformable bladder;
- and
- filling said deformable bladder with a fluid so that said deformable bladder expands to fill said plurality of chambers thereby forcing at least one valve within each chamber outward so that said at least one valve is disposed in a position to facilitate removal or replacement of said at least one valve spring.
A method for improving access to valve springs on valves within a cylinder head having a plurality of chambers so that at least one of said valve springs can be removed from its corresponding valve or replaced on its corresponding valve when said cylinder head is disassembled from an engine block, the method which comprises:
- disposing a sealing means on a surface, said sealing means having a length which spans said plurality of chambers;
- placing said cylinder head against said flat surface adjacent said sealing means so that said plurality of chambers abuts said sealing means;
- and
- introducing a fluid into said plurality of chambers thereby forcing at least one valve within each chamber outward so that said at least one valve is disposed in a position to facilitate removal or replacement of its corresponding valve spring.
A method for improving access for removal or replacement of at least one valve spring in a cylinder head having a plurality of chambers and a plurality of corresponding valves when said cylinder head is disassembled from an engine block, wherein said at least one valve spring is disposed on a stem of a corresponding valve, held in place by a key bolt, the method which comprises:
- disposing a deformable bladder within a channel which generally bisects a flat surface, said deformable bladder having a length which spans said plurality of chambers;
- clamping said cylinder head onto said flat surface so that said plurality of chambers are positioned over said deformable bladder;
- filling said deformable bladder within a fluid so that at least a portion of said deformable bladder expands to fill said plurality of chambers, wherein each valve of said corresponding plurality of valves is forced outward so that said at least one valve is disposed in a position to facilitate removal or replacement of said at least one valve spring by allowing compression of said at least one valve spring to provide access to said key bolt.
Dependencies are inferred from the claim text.