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Need to change out my Impeller
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Author:  GADawg [ Mon May 17, 2010 7:42 am ]
Post subject:  Need to change out my Impeller
It has been at least one year since this has been done. I know how to do it yet have never done it on this boat before. First thing I need is the correct part #. I have the 5.7L Volvo Penta. Not the 7.4L. Also any good tips, tricks or advice from you guys that have been working on your Volvos for years?

The closest I have been able to narrow the search down to is http://ww2.sierramarine.com/catalog_pdf ... 24-778.pdf.
Author:  298VISTA2000 [ Mon May 17, 2010 9:26 am ]
Post subject:  Re: Need to change out my Impeller
This site should get you the part #. You may need more info on your engine though.

http://www.volvopentastore.com/Gasoline ... _id.342338
Author:  97_245_sd [ Mon May 17, 2010 9:35 am ]
Post subject:  Re: Need to change out my Impeller
I'd highly recommend the volvo penta website as well to get the proper part number. There have been multiple changes to the impeller kit part number and there is a bulletin on the correct current part number to be used for the various styles of pump.

Another advantage is that the parts catalog is part of an exploded illustration and I found it helpful to understand the whole cooling system setup.
Author:  firecadet613 [ Mon May 17, 2010 9:48 am ]
Post subject:  Re: Need to change out my Impeller
97_245_sd wrote:
I'd highly recommend the volvo penta website as well to get the proper part number. There have been multiple changes to the impeller kit part number and there is a bulletin on the correct current part number to be used for the various styles of pump.

Another advantage is that the parts catalog is part of an exploded illustration and I found it helpful to understand the whole cooling system setup.


+1. The diagrams help a TON! I picked up mine from a local dealer, and my old impeller was in good enough shape to keep as a spare
Author:  Buoy Howdy [ Mon May 17, 2010 11:41 am ]
Post subject:  Re: Need to change out my Impeller
I see from your pictures that you are in a wet slip. I mentioned this on another thread, when I tied to change mine in the water recently I discovered that the pump is below the water line and that there was not enough flexibility to pull it up and stop to flow of water. Now admittedly I was planning to pull the boat the following weekend anyway, so I did not get real creative trying to find a solution. Just be forewarned that you may be dealing with a steady flow of water while you make the swap.
Author:  GADawg [ Mon May 17, 2010 1:07 pm ]
Post subject:  Re: Need to change out my Impeller
Buoy Howdy wrote:
Just be forewarned that you may be dealing with a steady flow of water while you make the swap.


Thanks all for the help. Just after I posted this I found the volvo penta website and I am headed up to the boat this afternoon to get the exact model before I order the impeller kit. Kind of overwhelming if you don't have the exact number. ;)

Buoy: Thanks for the heads up! Does it let in more water than the bilge pump can expel? Guess I'll have to be quick. I did see this on another post of yours and someone made the comment about vice grips and wooden shims on the inlet hose to clamp-it-off while you change it out. Anyone you know try this method yet. Unfortunately I do not have a trailer and I just had it pulled out 2 weekends ago to service the outdrive and acid wash the bottom paint. They wanted $100 for the impeller and $200 for labor. That is why I am gonna do it myself! :)
Author:  Buoy Howdy [ Mon May 17, 2010 3:58 pm ]
Post subject:  Re: Need to change out my Impeller
It never got to the point where my bilge pump kicked on, but I don't think it would have a problem keeping up. I was surprised based on my previous experience with the 278 and I kept thinking that it was just draining the water in the block... and draining... and draining... daayyaam that's a lot of water. :shock:

Just have everything ready to go, impeller out, lubed up with the glycerin, etc. I'd do it if I did not have a trailer. It's really a very easy process.
Author:  JAK [ Mon May 17, 2010 9:13 pm ]
Post subject:  Re: Need to change out my Impeller
When I did ours which is also below the waterline, I just jammed a tapered wooden plug into the hose opening.
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