Posted by JD Seller on January 21, 2017 at 09:05:27 from (208.126.196.24):
In Reply to: Injection pump leak? posted by tomstractorsandtoys on January 21, 2017 at 08:51:39:
Tom I would really look hard at the sealing washers on the injection lines. They can be a bear to get to seal correctly. I have had to double them up and use a new bolt to get some to stop leaking. Also the seals/orings around the throttle shaft can easily weep fuel.
With a book, an some common sense, they are not hard to take apart and reseal them. IF your not resetting the fuel delivery rate you do not need a test stand to work on these pumps. I have cleaned and replaced the governor dampener ring on hundreds of these pumps without any trouble. It takes about 3-4 hours to do it right and you just need to be clean.
I usually just do it on my work bench in the shop. Blow any an all dust/dirt/chips off the area and cover it with clean newspaper. You will need a vise to hold it as getting the head to pull out of the case can take some force but it is not hard to do. Just watch an get everything laid out in order. The easiest thing to mess up is the low pressure vane pump in the back of the pump. The outer ring can be install in either CCW or CC wise rotating. It is marked but it is easy to invert when you remove it and clean it. I take a picture with my phone anymore just to refresh my memory. LOL A seal kit is only around $25-30. If your replace the weight cage with a solid steel one that adds another $40 or so to the cost. So you can make pretty good wages doing it for yourself.
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