a little scoring is on my pump, still usable? pics
#6
Right... polish it lightly, rinse it well and then see how it looks. As a rule of thumb (no pun intended) you should not be able to snag a fingernail on any of those grooves as Predator mentioned. For the $$$, if you are concerned replace it. Better to have a known good part then to have something that is questionable in the unit.
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#10
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no you cant polish it but you can grind it out. Some shops have the proper machines to grind down pumps.
They just have to grind down the center pocket and then grind down the worm track area the same amount. Most pumps can be saved, we do it at my shop all the time. We have a Van Norman pump grinder.
Thats pretty much exactly what happens when a large company manufactures a pump. Except they do it on a much larger scale, we do it for our own rebuilds, to help keep the cost of a rebuild down.
They just have to grind down the center pocket and then grind down the worm track area the same amount. Most pumps can be saved, we do it at my shop all the time. We have a Van Norman pump grinder.
Thats pretty much exactly what happens when a large company manufactures a pump. Except they do it on a much larger scale, we do it for our own rebuilds, to help keep the cost of a rebuild down.