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View Poll Results: How often do you replace the impeller on your raw water pump?
Once a year, or more frequently, depending on engine hours 19 10.98%
Once every two years 59 34.10%
Once every three years, or more 50 28.90%
Only after it fails 21 12.14%
I've never replaced it 24 13.87%
Voters: 173. You may not vote on this poll

 
 
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  #25   IP: 207.210.31.104
Old 06-17-2010, 09:57 PM
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Dromo Dromo is offline
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Thumbs up soaking impellers

I use two impellers..one is installed in the pump and the other is soaking in brake fluid in a small glass jar. I keep swapping them out in the beginning of each season. I think doing this should make them last indefinitely. I soaked an impeller, that was in a used pump that I bought off E-Bay, for about three months and it came back to life, even the bent fins went back to their original shape.... looked like new!! As far as the vans being too flexible? I think that the centrifugal force on the impeller itself should counter any negative effect on the pump efficiency. My understanding is that brake fluid is formulated in such a way that it helps to keep all the soft rubber parts in the braking system from drying out and cracking i.e. boots on brake cylinders and calipers, inside master cylinder.
Just my two cents worth, to each their own.
Cheers Rick
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