OEM 2002 Chevrolet Tahoe Valve Stem Oil Seal

2002 Chevrolet Tahoe Parts Questions & Experts Answers

• Q: How to service and repair the Valve Stem Oil Seal on 2002 Chevrolet Tahoe?

  A: You need to start service by removing the valve Rocker Arm and taking off the Spark Plug wire from the Spark Plug using an appropriate method. Take out spark plugs from the Cylinder Head while the engine stays warm by turning them 1 or 2 times then clearing all dust and debris with compressed air or a brush. Insert the Spark Plug port adapter j 22794 into the Spark Plug opening and add an Air Hose while holding down the valves with airflow. Put the valve spring compressor model j 38606 into action to compress the valve spring before you remove the valve stem keys and gradually open the valve spring tension. Pull off the valve spring and valve spring cap in a single step while extracting the valve guide seal as the first alternative or just the valve guide seal and shim altogether for the following model. Clean the valve seat and shim area then install the valve spring shim for the first design and combined valve guide seal and shim for the second design. The valve guide seal installer (J 42078) is not necessary for the second design. Placing and aligning the valve guide seal correctly on the valve guide helps to protect against oil leakages and damage to other parts. Apply engine oil to valve stem components then put the first design valve guide seal on and use valve guide seal installer j 42078 to press or tap it lightly until the tool reaches the valve spring shim. Check the installed valve guide seal height and observe a 18.1 to 19.1 mm (0.712 to 0.752 inch) space between its top edge and the valve spring shim surface. Insert the valve spring and valve spring cap back into position while using the valve spring compressor (J 38606) to press down the valve spring. Install the valve keys by dipping them in grease before placing them carefully. Relax the valve spring pressure using the compressor tool (J 38606), then take out the device and gently tap the valve stem with plastic head hammer if needed to secure the keys. After removing j 22794 from its port put the hand tool on the Spark Plug and then tighten it to 15 nm while installing Spark Plug Wires across ignition coil and Spark Plug ensuring everything is in place before putting back the valve Rocker Arm.