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Vacuflush Head question

Old 07-25-2020, 03:32 PM
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Default Vacuflush Head question

Trying to diagnose an issue with my head, the pump won't stop pumping. I had it apart over the winter to replace the seal and it sorta worked for a little while but now it just keeps pumping.

During re-assembly, i haven't been able to get the 2 clamp ring pieces flush together after tightening the hose clamp. There's at least a 1" gap in the back between the two side pieces. I don't recall if it was this way before I took it apart and before I try any more troubleshooting, I need to find out if this is normal?

I don't have water leaks in or around the bowl.
Old 07-27-2020, 03:54 AM
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Vac leak. Did you change out the duck bill valves? Bowl to hull gasket or you have a leak somewhere further down the line. The plastic shroud is not a functional part but hides the guts.
Old 07-27-2020, 12:46 PM
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Originally Posted by irishangler View Post
Vac leak. Did you change out the duck bill valves? Bowl to hull gasket or you have a leak somewhere further down the line. The plastic shroud is not a functional part but hides the guts.
Thanks, I was hoping it wasn't the duckbill valves, they were last replaced just under 2 years ago but i've ordered replacements and will start there.
Old 07-30-2020, 05:57 AM
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Is the bowl empty? if so its the double gasket seal between the top of the stand and the bowl . Do you hear a leak at the pedal , that is the stem that goes through the side of the bowl to actuate the ball? Check the switch on the end of the vacuum storage chamber for leaks . The SW and TW pumps will both leak if the plunger gets cracked . And then there is the duck bills .
Old 07-30-2020, 07:32 AM
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Check the exhaust valve isn’t sticking
Old 07-30-2020, 03:26 PM
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Originally Posted by northeaster View Post
Is the bowl empty? if so its the double gasket seal between the top of the stand and the bowl . Do you hear a leak at the pedal , that is the stem that goes through the side of the bowl to actuate the ball? Check the switch on the end of the vacuum storage chamber for leaks . The SW and TW pumps will both leak if the plunger gets cracked . And then there is the duck bills .
Bowl remains full, gasket is new in January. Worked for a while but then this started.

no leak sound at the pedal, stem was replaced 2 years ago as part of an overhaul.

“Check the switch at the end of the vacuum storage tank” - what switch, the Vacuum switch. Test for leaks, will I hear air pressure escaping, soapy water spray or something else?

what plunger are you referring to, the Bellows?

Duckbills arrived today, I’m steeling myself for install tomorrow after a good pump out and rinse.

Old 07-30-2020, 03:30 PM
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Originally Posted by formula67 View Post
Check the exhaust valve isn’t sticking
good idea, had that problem once before....result was a sh*t volcano - not pretty

I did discover that the filter was “clogged”, probably happened when the tank got full recently. Filter has been cleaned but I’ll double check the vent tomorrow.
Old 07-31-2020, 03:41 PM
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Pulled the duckbill valves, one was definitely shot but it didn't solve the problem. Started checking the vacuum switch and as soon as I touched it, the pump stopped. Tried a few other times and each time and the pump would only stop when I tapped the vacuum switch. Order placed for a new one.
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Old 07-31-2020, 04:24 PM
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Had the same issue and replacing the vacuum switched helped it go away, until other issues arose, lol.
Old 08-01-2020, 05:41 AM
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Try giving the folks down at Environmental Marine a call. They are extremely knowledgeable and a great source for all things VF.

https://environmentalmarine.com/
Old 08-05-2020, 02:11 PM
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The new vacuum switch arrived today and based on how it's now clear to me that the old one is broken. Fingers crossed this works.
Old 08-31-2020, 05:54 PM
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Yeah, was wrong about the vacuum switch too. I still think the old one was beat, but the new one didn’t solve the problem.

bought a vacuum gauge and discovered the system was not building enough pressure. Bellows looked fine, but comparing to new it was clearly deformed. Replaced it and the o-rings, problem is now solved.
Old 09-14-2020, 12:57 PM
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Sounds like my story. I would advise anyone to order new duck bills to start, then listen for leaks with a cheap stethoscope from Amazon. When reassembling, pull every connection that you can and refit every fitting with silicone grease. This goes for any rubber gasket. I found some of the smaller O rings at NAPA for cheap. In the end, I was out for a new switch, duck bills, bellow kit and a few o rings. Works like a champ now but boy that was aggravating especially since I had to pull a fridge just to get to the vacuum tank.
Old 09-14-2020, 01:00 PM
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Go to the cruisers forum and ask Peggy. She is the head expert.

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