OEM 2007 Chevrolet Express 2500 Rocker Shaft Spring Kit

2007 Chevrolet Express 2500 Rocker Shaft Spring Kit Parts and Q&A

• Q: How to replace the Rocker Shaft Spring Kit and valve stem oil seal on 2007 Chevrolet Express 2500?

  A: First, remove the valve rockers arm, and after that, at the Spark Plug, twist each plug wire boot 1/2 turn and pull only the boot off. Take out the spark plugs from the Cylinder Head with an engine that is at room temperature turn them 1 or 2 turns and then clean by using brush or air blast to get rid of dirt or other stuff before removing fully the Spark Plug. Install Spark Plug port adapter (J 22794), connect an Air Hose to it, attach an Air Hose to it and use compressed air to keep the valves in place. With the help of the valve spring compressor (J 38606), compress the motion of the valve spring, followed by removing the valve stem keys and after that carefully releasing the valve spring tension. The valve spring compressor (J 38606) is then removed, followed by the valve spring cap and the valve spring, as well as further slide out of the Valve Stem Oil Seal and shim (1, 5). User should clean Cylinder Head valve spring seat or shim area, lubricate valve guide and Valve Stem Oil Seal with clean engine oil and install Valve Stem Oil Seal and shim (1, 5). Next, install the valve spring and valve spring cap, compress the valve spring with the valve spring compressor (J 38606) and install the valve keys, applying grease to hold the valves in their place and ensure that they are seated in the groove of the valve stem. Carefully relax the valve spring pressure without disturbing the valve keys and remove the valve spring compressor (J38606). Tap the end of the valve stem with a plastic faced hammer to seat the keys if needed. Lastly, take off Spark Plug port adapter (J 22794) from Spark Plug port, crank start the Spark Plug, and tighten it to 15 n.m (11 lb ft). Replace the Spark Plug Wires at the Ignition Coil and to the Spark Plug, check the wires for correct installation by pushing sideways on each boot and replace loose boot and then install valve Rocker Arm.