impeller replacement

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Ken Heyman

I removed my sea water pump impeller  a few days ago. I have a sherwood pump. I compared this impeller to one that came as part of a Universal Diesel parts replacement kit for a mxp25 (contained fuel filters, oil filters belts etc.). It appears to be of a different size than the one I removed. The width and length of the blades of the replacement  are longer. Also the slot for the "key" is  wider. It will probably fit but I can't find a part number on the old impeller in order to inquire of universal. Any suggestions? I guess I could let Universal sort it out with a phone call.

Thanks  in advance,

Ken
Ken Heyman
1988 c34 #535
"Wholesailor"
Chicago, Il

Tom Soko

Ken,
It could be that the impeller in the spare parts kit is for an Oberdorfer pump.  Both  Sherwood and Oberdorfer were used on the M25XP.
Tom Soko
"Juniper" C400 #307
Noank, CT

Ron Hill

Ken : When you ordered that kit did you state that you had a Sherwood?
The Oberdofer impeller has 6 blades and as I recall a Sherwood impeller has 8 or 10 blades.  
Think that you need to call Universal/Westerbeke.   :wink:
Ron, Apache #788

Ron Hill

Ken : As mentioned your engine could have 3 different pumps Oberdofer, Sherwood or a  Johnson.  
BTW, if you look on page 34 of your owners manual you'll find that a
Sherwood impeller has 12 blades and as I said an Oberdofer has 6 blades.
:wink:
Ron, Apache #788