How do you remove and reinstall the Pushrod and Rocker Arm in 2.2L four cylinder engine on Pontiac Grand Prix?

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Accepted Answer

To eliminate the valve cover from the cylinder head, turn the rocker arm nuts at the frontal part of the cylinder head counterclockwise; to remove the pushrods only, the rocker arms must be turned sideways The rocker arm nuts, the pivot balls, and the rocker arms must be removed if all the parts are affected. In case only the pushrods are being removed, turn the rocker arms in a way that will enable the pushrods to be removed. All the nuts, the rocker arms and the pivot balls should be placed in containers that are properly labeled so that they can be fitted back in the right positions, the box in which the pushrods are placed should have perforations, and with writing on the box that indicates the front side of the engine. If the pushrod guides need to be removed one must mark them in order to know how to install them later. The common areas to look for defects in a rocker arm are wear, crack and damage especially at the part that may touch the pushrods and valve stem; make sure the hole at the end of the pushrods is also clear. Inspect the pivot location of each of the rocker arm for signs of wear or damage; replace any worn or damaged rocker arm or its pivot balls. Examine the pushrods for cracks and excessive wear, take each and roll it across a piece of plate glass and this will show any bending. During reassembly, apply clean engine oil or moly-base grease to the low ends of the pushrods before they are reinstalled to their prior positions and make sure they are firmly seated in the lifter shelf. Having placed the adjusting end of each pushrod over the upper end of the respective rocker arm, and having inserted the nut over each pushrod, you must then smear moly-base grease on the end of the valve stems and on the upper ends of the pushrods before you fit the rocker arm nuts. Fit the rocker arm assemblies onto the heads in the locations specified, fit the pivot balls into the holes in the rocker arms along with the nuts to secure it, using moly-base grease to protect the mating surfaces until such a point that adequate engine oil pressure is unavailable, then tighten all nuts to the prescribed torque.

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