John is a special person that has had a lot of varied experience. He and I have always had a difference of opinion about who should attempt to rebuild/patch up a Roosa Master pump. Guess that is the perfectionist coming out of me. I have always been one that has to do it exactly right, but that is just who I am. If you are looking for perfection or have a pump that needs more than just a reseal, it needs to go to someone who has had years of experience after having factory training like John and I have had. And even then, it can be a challenge. Only the most experienced can tell by looking if a part should or should not be replaced for for a long service life. Even simple things like the transfer pump blade springs or delivery valves can be ready to fail or knowing how to check for the presence of water having gone through the pump.
I remember a CB pump that came through the diesel room that gave me fits back in the 70s. It simply would not settle down on the tractor, nor would it on the test stand. The first thing I checked was the air seperator for blockage. To make a long story short, there was a shiny sliver of steel in the bleed hole that made it appear the hole was empty. Only found it when I tried to to run a pin punch through it.
Not saying you can't do it, for I,too, have torn apart pumps on the tailage of a pickup truck,even in corn fields. The most memorable was a brand new 4320 at the Indiana State Fair. The dealer I worked for wanted to use it as a pull back tractor on the tractor pull strip and to also pull it as a demonstration. First 4320 I had ever seen as it had just been released from Deere that day, I pulled it apart, removed the shims and set the pump wide open. Talk about a new model making a show,it did.lol. Good luck and go for it. You won't learn Any younger. bob
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