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@mpcluever After checking that out it seems to me that this has to use a ball bearing because of the whole 'carbon sleeves release free radicals with wear' thing. Thank you for helping me clarify that!

@BeaksnBeer-Okay, my friend works at a machine shop so he would have access to a press like that (I assume). Have you done this? If so do you happen to remmeber the bearing number/size? I was planning on using a rubber sealed bearing. I was told the metal shielded variety do not make a complete...

So I take it that it is either dangerous or complicated to switch out the bearings? If so, that is fine. I have a friend who is very mechanically experienced and electrically knowledgeble who could do it for me. I just don't want to shell out another hundred plus dollars when I know I can buy a...

So, I have a march 809 pump, and I am planning on changing out the bearings. Does anyone know what sizes go into these things? I am fairly certain that it uses a bearing and not a bushing, but I could be wrong (and please, let me know if I am) I could buy a kit or whatever, but I would rather go...