I am so sick of the plastic impeller ones. I went through 2 within 50k miles
on my 2000 5 series BMW. I found a metal one and its lasted a long time so far.
and when the plastic ones break, there is no question what went wrong!
Chris
---- "Timothy H. Collins" <thcollin@mtu.edu> wrote:
> Professor Peter
> Thanks for the great lesson on Spridget water pumps!
>
> PPP> They typically are "lubricated for life" as they are sealed at each end.
> Interesting, I assumed the screw into the bearing area was there for
> periodic greasing maintenance. Maybe I have the "Old type" pump??
>
> PPP> Takes some time and some tooling.
> I can't imagine that you'd make any money fooling with them unless
> someone had to have an exact original pump and then of course the
> pricing structure would be different. Replacements of the aluminum
> kind are around $25. That can't be much of your shop labor/overhead
> time not to mention parts.
>
> The internals of the water pump are interesting and it is sad, to me,
> that they have become throw away items. This seems to be a small
> picture of the larger problem in our throw away society. The
> government is now encouraging folks to get rid of their "old" car and
> buy new - like that's a small, easy to do, thing. I would think that
> most families think twice and three times before making a purchase of
> that size.
>
> Thanks again. I need to find something else to take apart now. LOL
>
> Tim Collins
> http://www.flickr.com/photos/12702006@N07/
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