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Water Pump Shaft's

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Hi,

I bought a new water pump impeller shaft as my oil was mixing with water in my 250, because there was a notch almost half way up the shaft and I thought it had to be completely smooth from the cog all the way to the thread for the impeller. However, the one I received (it is second hand) has a notch in exactly the same place.

My question is should this notch be there or am I right in thinking it should be totally smooth?

Thanks

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If the notch is where the seal rides then its standard wear.

The issue is that the size of the shaft dictates the amount of lip pressure from the seal to do it's job.

You likely can clean it up. however it will be a smaller diameter and thus less lip pressure. Often I've seen these maintain a seal but for a reduced time than if it were New.

If you go this route clean it up the absolute minimum it takes. Of course use New seals.

Your best solution of course is a new shaft along with seals.

Edited by Supertuner_tb

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