Replacing tank gauges.

If you look online a bit you can find good explanations and pictures of how they work. There are a few different types. Mine are simple electrical contacts at different levels, and the water is the conductor. They are not adjustable and may just need a good cleaning. I decided to replace mine about a year ago, but I quickly discovered that was NOT going to happen! I didn't have enough room between the frame and the tanks to drill out the old ones and install the different type without dropping my tanks. And THAT was NOT going to happen after researching the procedure.

I have had similar problem at times with our unit but did rinse tanks extra good. Used the hose black tank flush for longer than usual and found it got better after drying out. I agree on replacing the sensors not good option. Hope it works for you.

rbpru wrote:
Are gray water and black water gauges hard to replace or adjust?

Mine will not go below 1/3 full even when the tanks are empty and the TT is level.

Can they be shimmed or otherwise ajusted? Are they float operated.

Check my installation of Horst Miracle Probes. If my present RV did not have an enclosed underbelly I'd do this mod to it as well.

Easy to replace........just a rubber bung that slips into hole in tank and then the bung is compressed as you tighten screw. That's the easy part.

Access to them is the hard part.......
Underbelly of trailer covered.then that has to be removed
Tank installed up high, next to frame, next to other stuff......can be hard to get to the probes (factory guys get to install them prior to tank going into place)

Probes get cruddy.......always showing level.

4 probes
2 lower ones......ground probe and 1/3
middle probe.......2/3
top probe.........full



There are other styles available......don't protrude thru tank wall, $$$ and you still have to have access

I haven't looked at our tank level monitor for over 6 yrs. Don't care.
Toilet burbs....time to dump
Sink/shower start to drain slower than normal....time to dump

They are all junk and destined to die. Learn to live without them. Cuz eventually you will.

LynnandCarol wrote:
They are all junk and destined to die. Learn to live without them. Cuz eventually you will.

Amen to that!

LynnandCarol wrote:
They are all junk and destined to die. Learn to live without them. Cuz eventually you will.

________________

+1. When the instrumentation quits (and it will) you will learn to fly "visual".

DRB

Check out these replacements. http://www.rvgauge.com/rv.htm

False readings with the standard button sensors are normal and if you don't have false readings, then something is broken, lol.

If you look at Old-Biscuit's photo, you can see that the lowest sensor (the common) is close to the same elevation as the 1/3 sensor and it does not take much slime built up on the wall of the tank to create a false reading. The right cleaner will fix this, but not permanently. Those sensors suck.... For really stubborn buildup, consider Liquid Drano - the version that does not attack metal. It will end up like new inside. We had to use it once, and man, does it ever work.

Even if those sensors do work, they don't represent 1/3, 2/3 & full with any accuracy.

We had Horst Miracle probes in a previous TT. False readings were gone. We are just getting our dealer to install them in our new TT. I'd do it myself but it's got an enclosed underbelly.

myredracer wrote:
We had Horst Miracle probes in a previous TT. False readings were gone. We are just getting our dealer to install them in our new TT. I'd do it myself but it's got an enclosed underbelly.

Heheh ... until your post I was wondering if my post on the Horst installation was invisible. ;)

The Horst probes are the solution. So far I have not needed to complain about my standard button probles since the BW tank has a washing system and the readings are still pretty good. Grey water is typically not an issue (as much) but the way I look at it, if I were changing the BW to Horst I would also change out the grey water probes at the same time.