Colorado 2WD L5-3.7L (2007)
7. Install the base plate of the J-44228-A over the spark plug hole of the cylinder to be serviced.
8. Install the J 39313 in the spark plug hole.
9. Apply constant air pressure to the J 39313 in order to keep the valve closed.
10. Install the arm and swivel nut of the J-44228-A over the stud corresponding to the valve to be serviced.
Caution: Compressed valve springs have high tension against the valve spring compressor. Valve springs that are not properly
compressed by or released from the valve spring compressor can be ejected from the valve spring compressor with intense force. Use care
when compressing or releasing the valve spring with the valve spring compressor and when removing or installing the valve stem keys.
Failing to use care may cause personal injury.
11. Tighten the swivel nut of the J-44228-A down only enough to allow access for removal of the valve locks.
12. Remove the valve locks. A magnet is the most suitable tool for this activity.
13. Loosen the swivel nut of the J-44228-A and swing the arm away from the valve spring retainer.
