www.iFourWinns.com

I took apart my vacuum pump to replace the duck bills, expecting 4 of them. 2 on each side of the pump. I only found 3, 1 on the input side and 2 on the discharge side. I had the whole thing apart and couldn't find another.
Anyone else run across this? I want to make sure I didn't miss something.

Thanks,

Steve.

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1969 Chris Craft Commander 47
1999 Four Winns 328 Vista - SOLD

I have four duck bill valves in my Vacuflush. I have replaced them once. The manual and the Vacuflush Maintenance Kit show four. As you say, two on each side.

http://seacoastservices.com/vacuum-generator-vg2-parts/

http://www.marinesan.com/1_5_Duckbill_1_p/385347802.htm

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John
2006 Four Winns Vista 278 (sold)

Shoot - I should have looked at that diagram while I had the whole thing out. I wondered if that nipple could be removed (part 15), mine did not have the 4th duck bill between the nipple and the pump, but obviously it's missing. Guess I get to pull it all apart again.
How would I go about removing the nipple without damaging the threads?

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1969 Chris Craft Commander 47
1999 Four Winns 328 Vista - SOLD

I can't remember having any difficulties taking that area apart. I had the duckbills in and out a number of times before I got the system working but this was nearly 3 years ago.
I found these step by step instructions with photos:
http://clubsearay.com/archive/index.php/t-30700.html
I can see a photo of the nipple but no mention of any problem with removing it.

My problem was that the system stopped working for no apparent reason. I replaced the duckbill valves then the pressure switch. Then I hired a professional. He was stumped but replaced the bellows. It still didn't work. He told me the key to keeping the system working was regular use of liquid soap. I put some in and vacuum was obtained immediately. Have been using putting hand soap or dishwashing liquid in the bowl ever since. Of course, this will not help with a missing part.

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John
2006 Four Winns Vista 278 (sold)

Interesting about the liquid soap - maybe that will stop my bellows from squeaking. How much and how often do you put it in?
I did try to loosen the nipple by hand, but wasn't sure that it was a separate piece so didn't force it. It might be in there tight since there is no rubber from the duck bill keeping the plastic parts separate.

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1969 Chris Craft Commander 47
1999 Four Winns 328 Vista - SOLD

We seldom overnight so the toilet is not used much. I apply a squirt of liquid soap whenever I remember, not every time it is used.
I can't recall if the nipple is a separate piece.

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John
2006 Four Winns Vista 278 (sold)

Is this the nipple we are talking about?

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John
2006 Four Winns Vista 278 (sold)

That's it. By the diagram it should have a duck bill on each side of it. Mine is missing the one between the nipple and the pump.

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1969 Chris Craft Commander 47
1999 Four Winns 328 Vista - SOLD

I found a service manual at http://osborneworld.com/Files/Caravan/D ... 0Guide.pdf
The diagram on page 28 looks like my system. Page 26 has a system with the nipple (part#13).

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John
2006 Four Winns Vista 278 (sold)

Perfect, thanks John. That service manual will come in handy.

Steve.

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1969 Chris Craft Commander 47
1999 Four Winns 328 Vista - SOLD

Yes thanks for the manual it on my list of things to do, knock on wood haven't had ann issues yet so i am greatful this topic is being covered before i need to dig into it

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2001 328 Vista "Nauta Dream 2"
AB Inflatable 10AL "Little Dreamer"
2000 248 Vista
1997 225 Sundowner


Mike