Bravo/MIE Raw water pump impeller replacement

HT32BSX115

Supreme Mariner
Joined
Dec 8, 2005
Messages
10,083
Howdy all,

Some people have indicated that you can go many years if the pump has "low" hours.

Here's a pump that I am replacing the impeller on that only has 20hrs on it!

You would think that it's in pretty good shape until the impeller is pulled.



DSCN1911.jpg




You can see that the "vanes" have a "set" in them which would reduce the pumping efficiency.
DSCN1912.jpg


DSCN1913.jpg


The old pump impeller is an aftermarket model and the new one is an OEM Mercury replacement.

DSCN1914.jpg




I think the old was in there for 4 years!


2 years is probably about the longest you should leave one in the housing before replacing it!


Cheers,


Rick
 
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