That IT service manual is not correct on the timing. They are talking about the very early JD 4010s. I have never seen one in person. The pumps they are talking about do not have the external adjustment for the pump timing. I think they all would have been 1960 models. All of the JD 4010s I have done have had the external adjustment. I own one that I just did the pump in last fall. I timed it TDC and then set the advance on the pump while running.
To make sure ask your injection repair shop how to do the dead/static timing on your pump. You could have the real old pump but I think that most of them where replaced under warranty. They had other issues with them.
A word of warning. IT service manuals are not always correct. I have them but I kind of take what they say with a grain of salt. They do show how to make some of your own tools and such but on the real important stuff I go with JD factory manuals.
The picture is of a JD 4010 and JD 4020 I own. They both where bought by my Grand Dad new.
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Today's Featured Article - Uncle Cecil's Super A Lives Again - by Mike Purcell. A week or so out of most of my childhood summers was often spent with my Uncle Cecil and Aunt Sissie in the small East Texas town of Maydelle on their 80 acre farm. Some of my fondest memories of these visits are those of learning to drive a tractor at the helm of Uncle Cecil’s 1948 Farmall Super A. Uncle Cecil was the second owner of this wonderful little tractor, but it was almost as though he had adopted an infant. The original owner was a man from Minnesota who bought her from a local dea
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