[C320-list] Slow Leak From SeaWater Pump

[Doug Treff]

I still have the old pump but I unloaded all my spare impellers and gaskets on Sailboat Swap Shop (Facebook group).

The guy at Bayshore marine told me that the pump was made to fit the 3GM30F-YEU engine. Same engine block, different pump, so the impeller was different. It bolted up just fine to my engine and it pumps a LOT of water compared to the old pump. Supposedly the Cam cannot be replaced in this pump, which makes it less expensive. But also means that when the Cam wears out, the YEU pump needs to be replaced..

I probably have created a problem for future owners of my boat, however, because I have the US version of the engine with a YEU pump installed. Thinking it might be good to take my Brady labeler and mark the pulley with "YEU Pump".

--
Doug Treff
doug at treff.us

On Fri, Jul 26, 2019, at 11:19 AM, Joel Krauska wrote:
> I went the expensive route and bought a full replacement.
> I didn't want to repack it myself or take it to a shop as I needed to fix
> it quickly as I had promised some friends some boat time.
> 
> I'd be interested in the differences between it and the YEU model.
> 
> I got the official part on Amazon.
> https://www.amazon.com/gp/product/B00C1M53Q6/
> The new one has additional material wrapping around the shaft where the
> leak was before.
> 
> Doug: Where'd you sell your old one?
> Anyone want one a used one from 2001 that leaks? :) .
> I'll send it to you for shipping costs.
> 
> 
> On Fri, Jul 26, 2019 at 6:10 AM Doug Treff <doug at treff.us> wrote:
> 
> > I had a similar issue - replaced mine with the YEU pump. Problem solved
> > for about $200. The new pump uses different impellers and an o-ring instead
> > of the paper gasket. So I also had to dump (sold online) all my old spares
> > and buy new for my spares kit. The new pump moves a LOT more water. I'm
> > assuming the old one was worn enough to affect the flow, even with a new
> > impeller.
> >
> > --
> > Doug Treff
> > doug at treff.us
> >
> > On Thu, Jul 25, 2019, at 7:08 PM, Joe Luciano wrote:
> > > Likely what is dripping is the pump seal.  They can be pressed out and
> > > replaced, but you have to remove the pump.  Or, you can replace the
> > > pump.  Just a matter of economics.
> > >
> > > Joe Luciano
> > > Second Wind
> > >
> > > Sent from my iPhone
> > >
> > > > On Jul 25, 2019, at 3:50 PM, Joe Geiger <joe.geiger at gmail.com> wrote:
> > > >
> > > > When I bought the boat back in October, the captain that did my survey
> > told me he noticed a drip from the raw water pump as we were motoring. I
> > have since replaced the impeller, the impeller cover, the seal washer that
> > goes on the inside of the impeller, the O ring and the hose that goes from
> > the raw water pump to the heat exchanger. I also used a silicone sealant
> > around the O ring before tightening the impeller cover plate. It still
> > drips. :|
> > > >
> > > > The pump cools the engine just fine so it’s not a pressing issue. Any
> > ideas on what else I might replace or check?
> > > >
> > > > Joe
> > > > --
> > > > Joe Geiger
> > > > “Vega” #722
> > > > Greenwich Cove, RI
> > >
> > >
> >
>