Vacuflush pump cycling

spirt320 · Dec 8, 2015

Unit is three years old. Within the last couple weeks I replaced all four duck bill valves, the vacuum pressure switch and the heads seals etc... But as it did before I did all of that, it still pumps/cycles about every 20-30 minutes for about 20 seconds at a time. I cannot locate any leaks and am at a loss for what to do next. Thought about maybe adjusting the pressure switch, but have heard some people advise against changing it from the factory setting. Any thought?

FootballFan · Dec 8, 2015

Have you cleaned the ball? Quick fix, take a brush - or even paper towels go around the ball while holding your foot down.

Next may be the seals in the unit itself. I had one that was running too much - put in a seal kit that is available (in the head itself) - took care of the problem.

Just a couple of ideas...

Mark

spirt320 · Dec 8, 2015

Yes sir, cleaned it all. Completely removed the commode from the boat, cleaned from top to bottom and put new seals in etc...

bbwhitejr · Dec 8, 2015

Very likely a leak at a hose or fitting...I have heard you can take shaving cream and coat the joints like you would use soapy water to find an air leak. If a vacuum leak, the shaving cream will "suck" into the leak.

Bennett

spirt320 · Dec 8, 2015

bbwhitejr said:
Very likely a leak at a hose or fitting...I have heard you can take shaving cream and coat the joints like you would use soapy water to find an air leak. If a vacuum leak, the shaving cream will "suck" into the leak.

Bennett

Thanks, I will try and give that a shot this weekend.

Vacuflush pump cycling

spirt320

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FootballFan

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