[C320-list] Water Pump Leak, Fuel Leak Questions - Seawater Cooling Pump Part Numbers

[Joseph Aberdale]

Do you think these part numbers would apply to the non-Euro Yanmar  
3GM30F as well?
Thanks

Joe
908

On Jan 18, 2011, at 12:06 PM, Albrecht, Alan wrote:

> Milagro #751 has the Euro version Yanmar (3GM30FYEU). I have the  
> correct impeller numbers (both Johnson and Yanmar) as well as the  
> individual part numbers for a rebuild of the pump. FYI - Johnson  
> does not sell a rebuild kit for our pump version F4B-903. The part  
> numbers are below:
>
>
> 1.	Impeller = Johnson Number 09810B or Yanmar 128990-42200
> 2.	O-Ring = Included with Johnson Impeller kit above or Yanmar  
> X0506523-01 (The O ring was out of stock but any automotive right  
> size O ring should work)
> 3.	Cam Johnson 01-452888
> 4.	Cam screw Johnson 01-46794-03
> 5.	Shaft  Johnson 01-45313
> 6.	Bearing Johnson 01-45207-3 (This is actually a bushing similar  
> to what you have on an automotive water pump. You will need a  
> universal bearing press to change this out.)
> 7.	Yanmar cooling water pipe 128690-49010 (This is the formed hose  
> between pump outlet and the heat exchanger you might as well change  
> it while you are at it)
> 8.	Glycerin, Vaseline or lube to lubricate the inside of the pump  
> until it refills with water. You may want to consider installing an  
> automotive radiator flush and fill kit on the pump inlet hose to  
> help prime the pump at start up.
>
> Items 3 and 4 are optional for a pump rebuild if the originals are  
> at all usable. If you have other problems e-mail Johnson Pump  
> directly they were very responsive and helpful.
>
> Other useful numbers:
>
> 9. End Cover Johnson 01-42388-2
> 10. End Cover Screws 0.0141.500
> 11. Replacement F4B-903 Pump Johnson Number 10-24165-2 (it is  
> around $400 USD)
>
>
> Also I had a similar fuel leak on Milagro and traced the problem to  
> a collapsed fuel hose. Over the years the clamp pressure compressed  
> the hose material so there was no more seal. A replacement needs to  
> be CG hose because it is a fuel line.
>
>
> -----Original Message-----
> From: c320-list-bounces at lists.catalina320.com [mailto:c320-list- 
> bounces at lists.catalina320.com] On Behalf Of Paul
> Sent: Tuesday, January 18, 2011 10:45 AM
> To: C320-List at Catalina320.com
> Subject: Re: [C320-list] Water Pump Leak, Fuel Leak Questions
>
> I have Hull #722 so our pumps could be the same.  I had the same  
> issue last
> year.  I was told that the only fix was a new pump.  My seal broke  
> as a
> result of trying to tighten the belts.  I had put some pressure  
> with a large
> screw driver against the pulley to try and pull the belt tight.  In  
> the
> process I broke the seal and the pump had to be replaced.  It  
> didn't take
> much.  The entire pump is sold together including impellor.  Cost was
> somewhere around $200.  We have a Yanmar dealer in our marina so I  
> was able
> to get the part immediately.  Sorry, but I don't know the part number.
>
> Paul Adison
> Rough Draft #722
>
> -----Original Message-----
> From: Dennis Harris
> Sent: Monday, January 17, 2011 10:18 AM
> To: C320-List at Catalina320.com
> Subject: [C320-list] Water Pump Leak, Fuel Leak Questions
>
> Water Pump Leak,
>
> Yesterday I decided to run the engine a bit to charge the  
> batteries.  After
> running about thirty minutes, I went below to close the thruhull  
> and saw
> water coming from under the front engine cover.  Source is the  
> cooling water
> pump.  Hoses are tight.  I couldn’t tell exactly where it is coming  
> from,
> however.  We have had a long spell of cold weather (in/for eastern  
> NC) and I
> keep a heater in the cabin that comes on at 38 degrees.  We  
> occasionally
> loose power and the power company did a 4 hour shutdown last week,  
> so I’m
> not sure whether the pump froze.  The leak is relatively slow, so I  
> suspect
> that shaft seal at front or the gasket at the back of the pump has  
> failed.
> It is my understanding that several pumps may have been used on the  
> engines
> (3GM30F, Hull 694).  How do I determine which pump I have?  Have  
> others had
> similar failure and what did you do to fix it (new pump, complete  
> rebuild
> kit, or just gaskets and impeller)?
>
> Fuel Oil Leak,
>
> At the same time that I was checking the water leak, I noticed that  
> the pan
> under the engine had some fuel oil in it.  Again, I haven’t been  
> able to
> spot the exact source, but it is coming from around the engine fuel  
> filter.
> The filter seems intact but the lines above it are wet with fuel.   
> Have
> others had a similar problem and where is likely source and what is  
> the
> recommended repair?
>
> On both of these, I was limited in the time that I could spend  
> investigating
> the problem sources and will go back to boat at first opportunity  
> to try to
> zero in a bit better, but I would be interested in your thoughts to  
> aid in
> the process.
>
> Thanks,
>
> Dennis Harris C320 #694
>