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Re: Changing A Raw Water Impeller (How To)
This thread is a bit old but I'm hoping halekai36 or someone else can help - specifically with changing my impeller.
Fyi, I'm a new Ericson 30+ owner doing my maintenance for the first time. With a boat buddy, I managed to change my oil and oil filter, transmission fluid, both fuel filters and bled the system. All seems good! :-) I decided to wait on changing on the coolant until I figure a couple things out.
HERE'S MY BIG QUESTION:
I'm trying to change the impeller on my raw water pump. I have an Oberdorfer (p/n # N202M-07) raw water pump. Per the engines owner's manual, I removed the screws, front plate and the retaining ring. Using a wooden dowel to keep the shaft from coming out I was able to pull out the impeller (that took quite a lot of work). I took the impeller to the chandlery and got a new one. Pushed the new one onto the shaft and it seemed to go all the way on but there's just not enough clearance to get the retaining ring back into its little groove. Any ideas?
Yes, we compared the new impeller to the old one. It sure seems like its definitely the right replacement part (and went to a good chandlery that should definitely know). It seems like the new rubber is slightly firmer as would be expected, which makes it stick out maybe less than a millimeter more - just enough that we can't get the retaining ring back on.
Would really appreciate any help!