What vaculush Vcuum oump do I have?

[Barnaclebill]

I have a 2004 Mariner 360. My Vacuflush vacuum pump needs a rebuild. The toilet is a 706 with a separate vacuum pump. It has a white cover guard held on by two screws. I can't find an exact image or a part number on the pump. Anybody have any ideas?

BarnacleBill

[tomschauer]

It is a Sealand either an S or T pump. If it runs, you most likely just need the duck bill valves. Both pumps use the same duckbills.

[Barnaclebill]

Thanks for the info.

[JohnS]

https://marinesan.com/vacuflush/vacuflu ... -diagrams/

[Midnightsun]

Source of the post I have a 2004 Mariner 360. My Vacuflush vacuum pump needs a rebuild. The toilet is a 706 with a separate vacuum pump. It has a white cover guard held on by two screws. I can't find an exact image or a part number on the pump. Anybody have any ideas?

BarnacleBill

What exactly is your problem? For sure the duck bills need replacing as mentioned. Mine lasted 10 years before I started having issues and now will changed them every 8 as a preventative maintenance routine. 4 duckbills and a new bowl seal should do the job. I did change the bellows on one but think that was overkill. Do have a set of duckbills and bellows on board just in case. Much better to do this when you have time as opposed emergency repair in the middle of vacation.

[Midnightsun]

By the way, bowl seal kit is available in the US via USPS here for a ridiculously low price. https://www.aliexpress.com/item/4000132 ... 0132846914

[Cooler]

You may be able to just replace the accordian bellows at the top of the pump. Open the top, see if the bellows are wet or gunked up. That is a frequent fail for those pumps. Replace the duck bills at the same time. er

[Viper]

Need to know what's happening first or not happening. Don't start throwing parts at it until you diagnose it properly as some components can be pricey.
- does the pump run?
- does the pump eventually shut off?
- how long does it run for before shutting off?
- does it cycle on it's own periodically?
- will water remain in the bowl if you don't flush?
- if the pump is working and shutting off after it builds a vacuum, do the contents of the bowl evacuate when you push the pedal?
- when were the duckbill valves last inspected/replaced?
- why are you rebuilding the pump?
etc....

[g36]

the biggest problem with these is usually being able to get to them often buried in some space you can hardly get too.

[rjr]

Viper: I was getting ready to post a question about duckbills until I saw your list of questions. So here are my answers:
Yes, the pumps run. (2 heads).
Yes, pumps shut off.
Pumps run 30 to 40 seconds before shut off - could be a little less.
Hardly ever cycle on their own.
Yes, water will remain.
Yes, full evacuation.
Duckbills were replaced approximately 5 years ago.
Duckbills on Admiral's head are making a "weet weet weet" noise just before shutoff. So I figured it was time to replace. Then I figured might as well do both.

Question: Do you know where vacuum generator for forward head is located? Are generators located next to each other on starboard side of engine room near aft head holding tank? I have a waste & water schematic - if anybody wants one shoot me a PM with your email.