Buick 22530557 Cylinder Head Assembly

Check that all parts of the valve mechanism are clean and free from carbon and dirt; the bare cylinder head should be clean with no abrasive particles which were used on valve reconditioning. Install a valve in the right port and fit the valve spring assembly of that cylinder which includes; spring, damper, shield, and cap. Fit the valve spring compressor over the valve stem and tighten to squash the assembly together. Mount a new oil seal in the lower groove of the valve stem, it should lie flat and should not be twisted. After that, tighten the valve locks and then open the compressor where the lock must sit well in the upper catch of the valve stem. Measure the installed height of the valve springs by using a narrow thin scale from the top of the shim if fitted, or from the spring seat to the top of the valve spring or spring shield if used. Should the valve spring installed height be slightly less than the minimum specified length, shims may be inserted under the spring to provide the required installed height but the latter should not be less than the minimum specified length. If the spring is rather short, it is necessary to change it to a new one.