[C38] Water pump

[Max Soto]

This might help
I got this from very old forums, but there are some part numbers.
*Oberdorfer Rotary Seals must seal *07/30/02 10:53AM
http://forums.torresen.com/eThreads/view/engines/view_post?id=3916

The first time I changed the impeller on my Oberdorfer I ended up pulling
the whole shaft out and after replacing the impeller on the shaft and
inserting the shaft back into the pump it started to leak water. (This water
will rust the front of your engine as well as the oil pan) Very bad news.
The next time I replaced the rotary seals as well as the impeller and this
did stop the water leak. The shaft seems to be shaped like a Coke bottle
that necks down to a considerably smaller diameter at both the water seal
and the oil seal center point. This necking looks like an intentional design
feature. Anyway, my engine needed a higher capacity pump and it is now using
a Sherwood water pump no. 302648 - 42175 that has twice the water flow
capacity. The pump came as a kit #302837 for retrofiting Universal models
5411, 5416, 5424, 5432, and 5444



*Sherwood has twice the flow of Oberdorfer*

Markus Ritter (MarkusRitter at hotmail.com)

08/02/02 09:32AM

I replaced my Oberdorfer last week with a Sherwood, so far it is great. I
love getting more water through and I no longer get steam.  see
http://sankaty.homestead.com/Universal_5432_rawwater_pump_cap.html    A KIT
IS AVAILABLE TO MOUNT THE CURRENT PUMP ON the universal 5411, 5415,
5424,5432, & 5444 IN PLACE OF THE OBERDORFER. KIT PART #302837. THE KIT
CONTAINS THE NEW PUMP AND MOUNTING HARDWARE   some folks have also changed
to the 3 inch heat exchanger in place of the original 2 inch unit.
see http://sankaty.homestead.com/Overheating_Heat_Exchanger_size_.html



*Pumps/oberdorfer/sherwood re:kubota/universal prices and compare*

Rick (pelago at phoenixcon.net)

08/05/02 11:09AM

DEPCO PUMP COMPANY 1 800 445 1656   I have read with interest the posts re:
gpm and cost and compare Oberdorfer with Sherwood.. the Universal/Kubota
uses two types of pumps 2 bolt and four bolt, but in reality they are the
same pump they are 202 pumps and the flow rate is 9.59 gal per minute at
2500 rpm... cost is $140.00 from Depco, I use them for all pump needs,
rebuild kit is $32.31 and comes with all needed for complete rebuild. If you
want to replace the shaft it is $21.57. Sherwood no longer makes the M-5 or
the H-80 that would be the Sherwood model to replace the 202 style, However
a Westebeke kit deal from Sherwood thru Westerbeke or Westerbeke distributor
is G903 for 234.20..HOWEVER THE FLOW RATE IS DAMN NEAR THE SAME AS THE
OBERDORFER...  no brainer 140.00 versus 234.20....  Just ordered a new
oberdorfer as a backup for existing pump, also ordered a rebuild kit for ON
HAND!!!!   happy sailing and Pelago is getting ready for cruise #8
-- 
Max Soto
C38 #198 ESTANCIA
Puntarenas, Costa Rica








2008/6/16, RICHARD KILROY <dickkilroy at verizon.net>:
>
> There are two water pumps on the 5424 one is the saltwater cooling pump and
> the other the fresh water circulation pump. I have replaced both on my cat
> 38 I think it is the saltwater pump that Charles has leaking, it has a long
> name I have forgotten( sounds Italian I think) If that is the pump it
> should
> be replaced with a Sherwood which is adapted to fit  by the dealer. it
> pumps
> more gallons per minute and cools the engine better. If the Great Lakes guy
> doesn't have what you want you can also try Hansen Marine in Marblehead Ma
> 781=631-3282. There is a freeze plug on the bottom of the face of the
> engine
> where this pumps drip will run , if it goes on long enough, the freeze plug
> will corode and fail and you will loose the engine oil, again it happened
> to
> me in saltwater. Hope all ends well
>
> Dick
>
>
> _______________________________________________
> Listserve mailing list
> Listserve at catalina38.org
> http://catalina38.org/mailman/listinfo/listserve_catalina38.org
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://catalina38.org/pipermail/listserve_catalina38.org/attachments/20080616/d27d7004/attachment-0001.htm>