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Old 11-19-2017, 03:32 PM   #1
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Webasto Furnace

Circulating pump is leaking and appears the seal has failed on the shaft. Has anyone replaced this seal or is there a replacement pump available at a reasonable price. If so where would one be available for purchase. The existing pump is made by Johnson Pump. Thanks. Grant.
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Old 11-19-2017, 03:46 PM   #2
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Sure Marine in Seattle should have the pump and would be able to tell you if the one you have can be rebuilt.

Sure Marine Service: Webasto Heating, AC & Galley Equipment
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Old 11-19-2017, 04:15 PM   #3
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Ditto Sure Marine as a resource. I have an Espar hydronic, and they convinced me on the merits of changing to an AC circulating pump. Very quiet, long service life and low amp draw, although I can't quote you what that is. I've had it in for 5 years, trouble free.
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Old 11-19-2017, 05:01 PM   #4
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I agree, Sure Marine will have what you need. Fixed mine.
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Old 11-19-2017, 07:02 PM   #5
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Or call someone in Sidney who are Webasto dealers. Such as Vector, Raven or Philbrooks.
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Old 11-19-2017, 08:39 PM   #6
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Or call Sure Marine and get the right answer the first time.
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Old 11-24-2017, 11:10 PM   #7
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There are different pumps, but if you have an MP Pump 29924....
https://www.suremarineservice.com/29924-1.aspx

....then you need seal kit 28984. It comes with a shaft seal and o-ring. You'll need a small gear puller (for the limited use, I got mine at Harbor Freight). Its an easy job, 30 min max, to replace the shaft seal.
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