Just got back from the boat.
I ordered two new impellers for the Westerbeke
(2008 30-B-Three). They are in a Johnson box and are the correct stock number 09-810B-1. Same as the ones I have been using except different packaging.........and..........the center pin that fits into the slot on the shaft is TOO BIG!!
The old ones came two ways and were threaded with a slot for a small screw driver. One was threaded all the way and one was only threaded on the two ends with the central part of the shaft smooth - and slightly smaller in size too, I think. They were brass colored (bronze?) too. The new ones look to be stainless.
The new one is TOO BIG and it is not threaded. It has knurling on each end and is pressed in.
Sometimes it is hard to get a new impeller to go in so I took the pin out and tried to fit it by itself. No luck. TOO BIG!!
Anyone come across this?
Tomorrow's plan is to talk to someone at Johnson Pumps, hopefully far enough up to get the real skinny.
The housing I have is the "newer" one that has the o-ring and a round cover.
I would not be surprised to find that they will be more than willing to sell me a rebuild
kit with shaft (or a new pump!!) for my perfectly working pump.
We shall see.