Vacuflush cycling

General repair/maintenance/upgrade information exchange.

Vacuflush cycling

Postby wlcstc » Fri Dec 01, 2017 9:38 am

I recently bought a lightly used 2004 3060 Window Express and the Vacuflush system cycles or re-pressurizes every few minutes. I've replaced the four duckbill valves, the ball seals, and the vacuum switch. Water holds in the bowl and I can't figure out what else to check. Any and all ideas are welcome. Thanks.
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Re: Vacuflush cycling

Postby gofast24 » Fri Dec 01, 2017 11:51 am

wlcstc wrote:I recently bought a lightly used 2004 3060 Window Express and the Vacuflush system cycles or re-pressurizes every few minutes. I've replaced the four duckbill valves, the ball seals, and the vacuum switch. Water holds in the bowl and I can't figure out what else to check. Any and all ideas are welcome. Thanks.


Yes, could be the bellows or in our case on our aft head it was the shaft "O" rings , the shaft meaning the SS rod from the foot flush pedal that opens the bowl ball valve, in our case the water remained in the bowl but the "vacuum" was leaking out of the shaft seal o rings. Just needed two new "O" rings and a good coating of "SuperLube" grease on the old shaft and new O rings!
Also, as our vessel is now 17 years old (we have two toilets) I had both pumps, gear drives, bellows, all "O" rings, and 8 duck bill valves all replaced a couple of weeks ago. The fwd head pump motor seized and blew the one breaker on the salon DC panel, as both pumps are fed by only one breaker that ended the use of either of the toilets. Put in line 10 amp fuses on both pumps so in the future if one motor shorts out that fuse will blow and therefore the other head toilet will still function until we get it replaced. Of interest, we put in 10 amp fuses that if the fuse blows the fuse has a small red LED light in it that comes and stays on so we can tell which pump is the culprit. To be honest here, the complete rebuild of both systems cost $1200, I dont have any experience with toilets, just engines :)
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2001 Regal 4160
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Lake Lanier, GA
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Re: Vacuflush cycling

Postby wlcstc » Fri Dec 01, 2017 12:50 pm

Gofast24,
Thanks for the lead. I'll go check this out and let you know what happens.
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Re: Vacuflush cycling

Postby ChesapeakeLover » Fri Dec 01, 2017 7:22 pm

This is great information. I've been having the same problem with my head cycling on and off. I to have replaced the duck bill valves to know final solution. I've already purchased the floor seal gaskets to try that solution. I have not replaced the O-rings. Since I'll have the unit apart I will replace the O-rings at the same time then. It is a very frustrating solution as my head cycles often and in the middle of the night it is not very pleasant to be awoken by the vacuum pump running constantly.
Tim & Jen
'Best Day Ever'
Severna Park, MD
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Re: Vacuflush cycling

Postby gofast24 » Sun Dec 03, 2017 11:54 am

ChesapeakeLover wrote:This is great information. I've been having the same problem with my head cycling on and off. I to have replaced the duck bill valves to know final solution. I've already purchased the floor seal gaskets to try that solution. I have not replaced the O-rings. Since I'll have the unit apart I will replace the O-rings at the same time then. It is a very frustrating solution as my head cycles often and in the middle of the night it is not very pleasant to be awoken by the vacuum pump running constantly.

The great guy we had do the complete rebuild of both pumps (after he fixed the aft head 6 months ago) used a vacuum gauge at the small vacuum tank (where the motor/bellows/ and duck valves are located) to determine if the leak was from the duck bills or the bowl to floor gasket or the shaft o rings. He determined from the vacuum check that it was the flush lever shaft o rings and not duck bills or floor seal gasket. Not sure how he figured that out but he was correct so I just left it go at that.

Correction = The vacuum gauge he used was "pushed" into the bowl ball valve opening while the ball was in the open (flush) position for whatever help this corrected statement might be?
Last edited by gofast24 on Sun Dec 17, 2017 11:53 am, edited 1 time in total.
gofast24
2001 Regal 4160
Twin VP 8.1GSiI V Drive Inboards
Lake Lanier, GA
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Re: Vacuflush cycling

Postby wlcstc » Tue Dec 12, 2017 3:02 pm

I can't find the shaft "O" rings. Does anyone have a source or know the size? I'd rather have the parts ready before I tear the head apart.
Thanks.
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Re: Vacuflush cycling

Postby gofast24 » Wed Dec 13, 2017 1:34 pm

wlcstc wrote:I can't find the shaft "O" rings. Does anyone have a source or know the size? I'd rather have the parts ready before I tear the head apart.
Thanks.

Give these folks a call or mail. If you have the model number that would help a lot! they put me in contact with the great fully trained mechanic that did my repairs. Maybe they will give you the p/n's for the "O" rings you will need and where to buy them? =

QUOTE=
Please contact our Marine Sanitation Distributor and VacuFlush training center, Environmental Marine in Ft. Lauderdale, they can refer you to a mechanic that has been trained on VacuFlush in your area.

1-800-522-2656

Kind regards,
Heidi McClain*
Export Customer Service Specialist
Dometic Corporation, SeaLand
13128 State Route 226, Big Prairie, Ohio 44611
Direct Line: 330-439-5541 - Fax: 330-496-3097 - Email: heidi.mcclain@dometic.com
gofast24
2001 Regal 4160
Twin VP 8.1GSiI V Drive Inboards
Lake Lanier, GA
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Re: Vacuflush cycling

Postby wlcstc » Sun Dec 17, 2017 7:27 am

Thanks very much, I'll give them a call.
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Re: Vacuflush cycling

Postby gofast24 » Wed Dec 27, 2017 12:06 pm

wlcstc wrote:Thanks very much, I'll give them a call.

What did you find out? Were they helpful in either finding the o rings that may have been the problem or a factory trained mechanic in your area to do a thourough analysis of your problem? Regarding a previous post in this thread regarding the pump kicking in at night we put up with this for a few weeks and then finally figured out to just turn off the DC breaker that fed both pumps, no more noise at night. Also of interest what the mechanic that rebuilt both pumps indicated the bad pump/motor failure was most likely due to the pump continually cycling (about every 15/30 minutes) , makes sense, the motor/gear box just wore out due to us letting the problem go for a year or so! Shame on me!
gofast24
2001 Regal 4160
Twin VP 8.1GSiI V Drive Inboards
Lake Lanier, GA
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Re: Vacuflush cycling

Postby wlcstc » Sat Jan 06, 2018 11:09 am

I've just received a rebuild kit for the flush lever and will let you know what happens after it's installed.
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Re: Vacuflush cycling

Postby gofast24 » Sat Jan 06, 2018 12:01 pm

wlcstc wrote:I've just received a rebuild kit for the flush lever and will let you know what happens after it's installed.

Great, where did you get it and how much dineros ? Let us know if it fixed your cycling problem!
gofast24
2001 Regal 4160
Twin VP 8.1GSiI V Drive Inboards
Lake Lanier, GA
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Re: Vacuflush cycling

Postby wlcstc » Sun Jan 21, 2018 9:50 am

The repair kit solved the problem. No more cycling! I ordered the kit from Environmental Marine Services in Fort Lauderdale, FL. 954-522-2626. For my model system it was item #385318162 and cost $39.95 plus tax and shipping.
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Re: Vacuflush cycling

Postby gofast24 » Mon Jan 22, 2018 12:56 pm

wlcstc wrote:The repair kit solved the problem. No more cycling! I ordered the kit from Environmental Marine Services in Fort Lauderdale, FL. 954-522-2626. For my model system it was item #385318162 and cost $39.95 plus tax and shipping.

Thanks for the reply! I hope the "repair kit" was more than just 2 "O" rings? What was in the kit?

thanks
gofast24
2001 Regal 4160
Twin VP 8.1GSiI V Drive Inboards
Lake Lanier, GA
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