Question 1

How to service and repair the Pushrod on Buick Regal?

Accepted Answer

Your first step to repair the push rod starts with removing the valve Rocker Arm covers and the Rocker Arm bolts and setting aside each part on a clean area until reinstallation. Begin service by taking off the valve Rocker Arm(s) followed by the push rod guide plate(s) when all rocker arms are removed before placing the push rods(s). Clean all push rods and valve rocker arms and guide plates and bolts in a suitable solution while ensuring all valve Rocker Arm bolts have no remaining thread adhesive. The installation process requires the electronic torque angle meter (J36660-A) to use compressed air for blowing oil out of the Cylinder Head tapped holes. Clean engine oil should be applied to both ends of push rod(s) before their installation into their original positions which should be followed by push rod guide plate(s) and valve Rocker Arm(s). The threadlocker gm p/n 12345493 or an equivalent product should be applied to the Rocker Arm bolt threads before installing the valve Rocker Arm bolts with j36660-a tool usage. Tighten the bolts to 15 nm (11 ft. Lbs.) before using the j36660-a to rotate them by another 90 degrees. As the last step install the valve Rocker Arm cover(s) before inspecting the valve train for any unwanted sounds.

Question 2

How to replace the pushrods and valve rocker arm on Buick Century?

Accepted Answer

The replacement of valve rocker arms and push rods should begin by eliminating the left or right valve Rocker Arm covers. Begin by taking out the Rocker Arm bolts while discarding them before placing the valve train parts into a rack and carefully working with the pushrods to stop them from dropping into the lifter valley. Remove first the rocker arms and then the pushrods from the operation. When installing the pushrods apply prelube gm p/n 1052367 (Canadian P/N 992869) to their ends as the intake pushrods extend 144 mm (5.68 inches) and the exhaust pushrods measure 152.5 mm (6.0 inches). Replace the pushrods together with rocker arms to their accurate spots followed by installation of new valve Rocker Arm bolts. Use j 36660-a torque angle meter (J 36660-A) to rotate bolts 30 degrees after tightening them to 14 nm (124 in. Lbs.). Put back the valve Rocker Arm covers of either the left or right side as the final step of the valve adjustment.

Question 3

How to Service and Replace the Pushrod on a Buick LeSabre?

Accepted Answer

The necessary tools to replace the valve Rocker Arm and push rod consist of torque angle meter (J 45059). After unfastening the left and right valve Rocker Arm covers and removing the bolts from the pedestal retainers proceed to detach the pedestal. Maintain cleanliness on the surface area where you set the assemblies and arrange the stored components according to the original configuration and original mating surface locations. Remove the Rocker Arm assembly along with pushrods before cleaning all bolts of thread adhesive while conducting inspections of valve rocker arms and pushrods. Your first step should be assembling pushrods after which you should install the valve Rocker Arm assembly before adding the pedestal. The bolts fastening the lower Intake Manifold to the Cylinder Head can be accessed exclusively through removing the upper Intake Manifold which is found in right front and left rear corners. Use gm p/n 12345493 (Canadian P/N 10953488) threadlocker compound or its equivalent on the thread areas of the valve Rocker Arm bolt before installing the pedestal fasteners. Apply the torque angle meter (J 45059) to tighten the value Rocker Arm bolts to 15 nm (11 ft. Lbs.) + 90°. The final step includes replacement of the left and right valve Rocker Arm covers while listening for valve train noises.

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