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 - Tractor Traction - by Chris Pratt. Our first bout with traction problems came when cultivatin with our Massey-Harris Pony. Up till then, this tractor had been running a corn grinder and pulling a trailer. It had new unfilled rear tires and no wheel weights. The garden was already sprouting when we hooked up the mid-mount shovel cultivators to the Pony. The seed bed was soft enough that the rear end would spin and slowly work its way to the downhill side of the gardens slight incline. From this, we learned our lesson sinc
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