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Post by dancbx on Mar 19, 2017 21:25:03 GMT -5
Dumb question. I have seen guys post these for sale- running without water in them. Everything in my brain says this is no no for any pump, water or otherwise. Can anyone chime in? Thanks Dan
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Post by Clasec on Mar 20, 2017 1:06:04 GMT -5
I would say it depends on the impeller design. If it were metal or composite and didn't contact the housing all is good. But if rubber or a vane type and contacted the housing I'd say not good.
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Post by sweepleader on Mar 20, 2017 6:37:29 GMT -5
The shaft seal is important too. The shaft seal usually needs water for lube, even a ceramic seal needs to be cooled right away. I would expect the shaft seal to be damaged by running dry. Some are lip seals, rubber or plastic, they would go away in a few seconds I would think. Ceramic or similar face seals would last a little longer. It would depend on the individual design used in a particular pump. I don't have any experience with Homelite pumps directly so this information might not apply to them. If a new seal was lubed with oil or grease it could run a little while without trouble.
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Post by onlyhomelites on Mar 20, 2017 14:23:10 GMT -5
Dan you are spot on! I believe these pumps use a ceramic seal, but I would not be running one dry for very long. When the seals are available, they are not cheap. I think these have a brass impeller (I know it's not rubber).
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Post by sweepleader on Mar 20, 2017 20:21:12 GMT -5
Most sizes of ceramic seal are available in the aftermarket, like bearings. If you knew the diameters and lengths, I bet a seal house could match it up, just like the bearing guys do. Not saying it would be cheap but it would not need to have a Homelite number on it.
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Post by onlyhomelites on Mar 20, 2017 20:39:18 GMT -5
Great to know...I was not aware that there were aftermarket sources for those kinds of seals too!
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Post by Clasec on Mar 20, 2017 20:46:54 GMT -5
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Post by dancbx on Mar 20, 2017 20:47:01 GMT -5
Dan you are spot on! I believe these pumps use a ceramic seal, but I would not be running one dry for very long. When the seals are available, they are not cheap. I think these have a brass impeller (I know it's not rubber). I have the pump but I am eyeing up another one:) I have a stash of the ceramic seals- 62694 and 62713 that I stumbled across, I just checked, the one impeller I have is cast iron.
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Post by dancbx on Mar 20, 2017 20:48:34 GMT -5
Great to know...I was not aware that there were aftermarket sources for those kinds of seals too! Agreed- I did not you could source those as well, I think the hardest part would be removing the impeller!
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Post by sawnami on Mar 21, 2017 8:22:32 GMT -5
That guy may be willing to deal. He's had them advertised for a looooooooooong time. My luck would be assuming that they are all pump parts after all this time.................except for the case of 750 and 650 pistons that the buyer finds in the bottom of the pile after they finally sell.
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Post by undee70ss on Mar 21, 2017 11:35:00 GMT -5
..............except for the case of 750 and 650 pistons that the buyer finds in the bottom of the pile after they finally sell. That would be like hitting the lottery!!!!!
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Post by onlyhomelites on Mar 21, 2017 14:29:43 GMT -5
I'm not that lucky!
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Post by lawnmowertech37 on Mar 27, 2017 6:53:11 GMT -5
Well just letting u all know i have pump parts here even the ceramic seals
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