Great write up Naughti! That job is on my list for the near future and I appreciate your efforts. At first I thought you bought your boat from my previous owner last month!! He too said "all service up to date, have done everything that needed to be done"! Until I asked him when the impellers were replaced, the response, "what are impellers?", I knew I was in trouble......Again, thanks.

 

Nauti,

Boy, it is really nice to have a dockmate who is qualified in this task!

Nice writeup - thanks - mine will be next.

 

Nice write up, Your set up looks the same as mine, I'll save this thread for future reference. Thanks for posting

 

Hey don't forget us good ole boy's over on A dock !!!!!!

 

I agree - thanks for the write up and photos. I was searching on the same topic and couldn't find any info other than "replace the duckbills". My pump was running continuously but then stopped on its own and works fine now. I assume from reading other posts that something (TP?) got stuck. This will be great info for future reference.

 

Funny, I forgot that's the reason I went in. I found what looked like an old toothpaste cap stuck in one of the middle ducks. Cannot for the life of me figure out how it got through, but it was there and the way it was wedged affected flow pretty substantially.

 

Nice writeup and pics. I may have to do this soon so I'll bookmark this topic.

Just a tip for VacuFlush owners...the reps from the company said when you use it, always let the foot pedal snap back to the top position, don't raise it slowly with your foot. That helps to keep the rotating ball and other internal parts free of anything that might clog the system and keep it from working properly.

 

Just a tip for VacuFlush owners...the reps from the company said when you use it, always let the foot pedal snap back to the top position, don't raise it slowly with your foot. That helps to keep the rotating ball and other internal parts free of anything that might clog the system and keep it from working properly.

This is a good one! Other tips they (Dometic Vacuflush) gave me were:

1. Clean your toilets and system exclusively with Cascade dishwasher powder.
2. Do NOT put holding tank deodorizer chemicals down the toilet - it dissolves the duckbills - rather add it thru the suckout hole.
3. Lubricate the ball and seal regularly with Synco/Super Lube Multi-Purpose Synthetic Lubricant (spray is definitely most convenient)

http://www.amazon.com/Synco-Superlu...perlube-Multipurpose-Synthetic-Grease/dp/B0016GTSBY/ref=acc_glance_sg_ai_ps_t_4

 

Too bad they don't have "smell-a-net" to convey the true fun of this repair!
I have yet to do one by the way!

 

thanks for info on duck bills I replaced my duckbills in 20 nin all systems working 2006 38sundancer Boston Ma.

 

Thanks so much for this detail write up. It gave me the confidence to tackle the job and it was a breeze!!! A stinky breeze but still pretty easy.

 

Agreed. The pump was hard to get at but reading through this made it worth while. It took me about 2 hours total with the most frustrating thing being the two little screws associated with the shield and getting them back on.

 

Nice job Your Honor! This is actually something in my boat that is fairly EASY to do. I don't have to take the pump out - it's mounted to a piece of grey Searay plywood in the bilge. I had no idea how to do it but the duckbills come with a small sheet of paper with line drawings which were pretty self explanatory. I was told it is helpful to run a few flushes of soapy water through first (assuming your pump is working correctly) and keep rags handy for the "overflow"

 

Thanks for this tutorial, on my list for the near future

 

How do you lubricate the ball and such? Shut off water and drain the toilet?

 

As I went to change my duckbills, all went to hell on the second thing I touched. When I went to remove the union on the right (dip tube) it crumbled. I ordered a new one, hope it’s here by Thursday.... besides that, this went real well. Mine looked to be close to needing it, they didn’t look completely closed like the new ones.... here is a piece, it almost looked like the PO or mechanic had used some white tape in it. Lucky it was still working

here is the part I had to order
https://www.environmentalmarine.com...RCdARIsAGEX0zlwufOUlEEnOdZOpqmAp_eBaOutFbviw9pdsm-D1imE6j2lrViUQKUaAnjCEALw_wcB

 

Question, what is the total number of duck bills that need to be replaced?

 

4, 2 on each side of the pump. 2 are easy to get to, the other 2 are behind a short piece of pipe (on each side)

 

410 with two heads, one pump? or two? to replace duck bills?
mine works great holds water flushes great, just the amp meter in panel cycles when fwd or aft is on... so i am assuming two systems two separate rebuild on vacu flush?

also 2inch or 1 1/2 kits

Thanks in Advance

 

I unfortunately need to replace my duckbill valves. there is some stinky water in the toilet. When I pull the pump is that water coming out or do I just need to deal with the extreme smell?

 

If water isn’t removing from the toilet with the pump on, you could have stuff blocking the line causing it, or bad duckbill valves

There is 4 total. I have a weak stomach, and I will say it wasn’t bad at all….

 

Would it make sense to replace the white pump bellows at the same time or can they be easily replaced at a later time?

 

It’s not a bad thing to do, I like to do one change to a system (if possible) at a time to see what fixes a problem (or doesn’t). You will have the pump out so it’s no more work.

 

As has been mentioned many times on CSR, on reassembly do not crank down on any of the nuts (metal or large plastic). Strip any fittings or crush any gaskets O rings or duck bill rims will be a big problem.