Thanks for all you do.
Jim Becker wrote:The rocker arm shaft is held in place on top of the head by 3 supports. The middle one is held by a nut (along with a very important flat washer) that threads onto a hollow stud. The stud is drilled on one end and the side. The hollow end goes down. Pressurized oil goes into the bottom end and out the side of the stud. It then flows through a passageway in the support to lubricate the rocker arm and the rest of the top end. You need to be gentle when tightening the nut as the stud is very easy to twist off. People have been known to install the stud bottom side up, or after loosing or twisting it off, replace it with a plain stud or a bolt. Any of these assembly errors will result in cutting off all lubrication of the top end. I would not try to remove the stud, as it is may twist off. After the engine is restarted, make sure there is oil flow to the top and take corrective action as needed.