Raw Water Pump replacement

[FWF]

Raw water pump on Westerbeke showing has a leak and price being quoted for replacement Sherman pump is $832. Ouch. Any insight from others on replacing this part much appreciated.

[ElizabethG]

Fred,

I replaced my raw water pump with this from CatalinaDirect.com

From my order...

Items Ordered
-----------------
Water Pump, 1/2" Oberdorfer, Repl for 1/2" Sherwood (#Z3936): 1
Item Total: $466.40

Water Pump Adapter Elbow, 5/8" x 1/2" NPT (#Z3955): 1
Item Total: $15.91

====================

Subtotal: $482.31
Shipping (Best Way): $12.95
Total: $495.26

Bill
C350, #193
Atlanta (Home) / Charleston, SC (Boat)

[KenKrawford]

Fred, you can also just replace the pump seals. Provided the shaft isn't scored, new lip seals should fix and water leakage problem. Here's a pretty good writeup on bearing replacement on a Johnson pump which is similar to the Sherwood. https://marinehowto.com/rebuilding-a-raw-water-pump/

The option that Bill chose is also a very good one. The Orberdorfer pump has the advantage of a forward facing face plate so access to the impeller is much easier since you can actually see what you are doing rather than working blind.

[FWF]

Thanks Gents. Good info to consider. Can't quite understand the Sherwood design with access tucked behind the pump.