OEM Chevrolet Colorado Rocker Shaft Spring Kit

Chevrolet Colorado Rocker Shaft Spring Kit Parts and Q&A

• Valve Springs
  12592506
  Q: How to replace the Rocker Shaft Spring Kit and valve stem oil seal on Chevrolet Colorado?

  A:

  To change the Valve Stem Oil Seal and valve spring you must first boost the vehicle and take off the service slot plug. Place the en 46547 (Flywheel Holding Tool) on the flywheel teeth before lowering the vehicle. Remove both Camshafts and Spark Plugs from their locations. Fit the j-44228-a base plate above the Spark Plug hole of the targeted cylinder and insert the j 39313 Spark Plug port adapter. Maintain pressure through the compressor's air supply to prevent the valve from opening. Insert the j-44228-a arm over the stud that corresponds to the valve and tight the swivel nut but leave it loose enough to access the valve locks. Gently pull out the valve locks with a magnet before detaching the swivel nut and moving the arm away to take out both valve spring retainer and valve spring. Insert the j 38820 tool onto the valve stem seal to remove it by turning and pulling the device. Apply engine oil on the valve stem and inside the space before inserting the new seal with j 38820 until it fits properly. Position the valve locks into the valve stem retainer groove using j 43059 tool while the swivel nut remains loosely tightened. Perform the same procedure to remove and replace the swivel parts of all j44228a valves in the cylinder. Lower the air pressure and withdraw j 39313 from the Spark Plug hole before taking off j-44228-a base plate. Perform these steps for all cylinders needing service then put in spark plugs and camshafts. After supporting the car lift it again and put the service slot plug back in place while disconnecting the en 46547 tool from the flywheel teeth.
• Valve Springs
  12596078
  Q: How to service and repair the Rocker Shaft Spring Kit and Valve Stem Oil Seal on Chevrolet Colorado?

  A:

  After supporting the vehicle you must raise it before taking off the service slot plug. Put the en 46547 Flywheel holding tool on the Flywheel teeth before lowering the vehicle to the ground. Move forward by taking off valve Rocker Arms and Spark Plugs first. Place the j 44228 base plate over the Spark Plug hole of the servicing cylinder and insert the j 39313 Spark Plug port adapter in its place. Keep the valve closed using continuous air pressure on the j 39313 before you mount the j 44228 arm and swivel nut on the appropriate j 44228 stud. Take proper safety measures because valve spring compression creates strong pressure against the tool. Turn the j 44228's swivel nut softly to reveal the valve locks. A magnet proves useful for taking the valve locks out. To remove the valve spring use the j 44228 by unscrewing its swivel nut to pivot and detach the valve spring retainer and spring. Push the j 38820 valve stem seal installer onto the old valve stem seal to twist and pull it out for measurement and inspection of the valve spring. Apply engine oil to the valve stem and new seal's inner diameter. Put a seal protector on the valve stem before using the j 38820 to install the valve stem seal gently as you push and turn the tool. Slide the arm tool over the valve holder while tightening the swivel nut until you can set the valve locks into place using tool 43059. Take off both parts of the j 44228 then perform this same procedure for other cylinder valves. When work is completed you must release air pressure after disconnecting the j 39313 from the Spark Plug hole and taking off the base plate of j 44228. Finish by putting in both spark plugs and valve rocker arms then hoist and hold the car before taking off the teeth lock from the Flywheel and replacing it with the service plug.