GM 24504406
Push Rods

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.

Start the valve Rocker Arm and push rod replacement by obtaining a torque angle meter (J 36660-A). Rephrase the left and right valve Rocker Arm covers first and then remove the valve Rocker Arm pedestal retaining bolts before removing the pedestal. The assemblies must be placed on a clean surface till reassembly happens. Proceed with removing both the Rocker Arm assembly and the pushrods before cleaning all thread adhesive from the bolts while inspecting the valve rocker arms and pushrods. Begin by setting in the pushrods then the valve Rocker Arm assembly after which you install the pedestal. The two bolts securing the lower Intake Manifold to the Cylinder Head become reachable only after disassembly of the upper Intake Manifold positioned at both right-front and left-rear locations of the lower manifold. The gm p/n 12345493 (Canadian P/N 10953488) threadlocker compound serves as the install application along with other equivalent compounds before setting the valve Rocker Arm pedestal retaining bolts to a torque range of 15 nm (11 ft. Lbs.) + 90 degrees following torque angle meter (J 36660-A) protocol. As the last step reinstall the left and right valve Rocker Arm covers before checking for valve train noise.

Service and repair of the push rod begins with left valve Rocker Arm cover removal followed by removing the right valve Rocker Arm cover. Start by removing the pedestal retaining bolts then disconnect the pedestal from its location and clean both assemblies and store the components in order for rebuilding. After removing the Rocker Arm assembly with pushrods you can clean the valve rocker arms pushrods pedestal bolts using a suitable solution for wear inspection. You must eliminate thread adhesive from all bolts just before their installation stage. To perform this procedure the torque angle meter (J36660-A) becomes the necessary tool. The installation starts with placing pushrods and valve rocker arms on their respective positions before securing the pedestal. The threads of valve Rocker Arm bolt require gm p/n 12345493 threadlocker compound with equivalent properties before installing the valve Rocker Arm pedestal retaining bolts. Secure the valve Rocker Arm bolts at 15 nm torque setting followed by an additional 90 degrees rotation using the torque angle meter (J36660-A). After installing the left and right valve Rocker Arm covers you should check for any abnormal valve train noises.

Install the left and right valve rocker arm covers and listen for any valve train noise.

Use compressed air to blow oil out of the tapped holes.

Remove the valve rocker arm cover(s).

The necessary tools include the Torque Angle Meter (J 36660-A).

Finally, install the valve rocker arm cover(s) and inspect the valve train for noise.

Remove the left or right valve rocker arm cover and the rocker arm bolts, placing the parts on a clean surface and storing them in order for reassembly.

Reinstall the left and right valve rocker arm covers and listen for any valve train noise.

Install the valve rocker arm bolt(s) and tighten them to 15 Nm (11 ft. lbs.), using the J36660-A to rotate the bolts an additional 90 degrees.

First, remove the valve rocker arm cover(s) and the rocker arm bolt(s).

The intake pushrods have yellow stripes and measure 5 3/4 inches long, while the exhaust pushrods have green stripes and are 6 inches long.

Apply Engine Oil Supplement (EOS) GM P/N 1052367 or an equivalent.

Clean the push rods, valve rocker arms, bolts, and guide plates in a suitable solution, and clean the valve rocker arm bolts of all thread adhesive.

The intake valve push rods, which measure 144 mm (5.75 inches) and are yellow, should be installed in their original location.

Coat the rocker arm friction surfaces with camshaft and lifter prelube GM P/N 12345501 (Canadian P/N 992704) or an equivalent.