Tank level probes

[dru penland]

So the screw itself makes contact with the fluid inside the tank and completes
the circuit to light the light on the panel? Would this be the same on an '83?



Don Bradner wrote:
(Hopefully this answers David Brady's question, although I would not
be surprised if it was completely different in '02)

The "sensors" are the stainless machine screws themselves. They are installed in
pairs, so one grommet per screw, two per "sensor."

The screws were in good shape. The two I started with were the "Full" sensors,
so I may find things worse when I get to the 1/4 ones near the bottom. If so,
there is nothing odd about them and any well-stocked hardware store should be
able to supply them. I was surprised to find that the captive nuts are brass.

At this point it occurred to me that pictures would help:
http://www.arcatapet.net/travel/images/9...ensors.jpg
http://www.arcatapet.net/travel/images/9...ensors.jpg

Don Bradner
90 PT40 "Blue Thunder"
Eureka, CA

On 6/5/2007 at 3:17 PM Leroy Eckert wrote:

>Mine is the same year. So it takes 2 grommets per sensor? I think I have
>4 sensors on each tank. What did the sensor itself look like, condition
>etc?
>
>Leroy Eckert
>1990WB-40"Smoke N Mirrors"
>Niceville, FL
> ----- Original Message -----
> From: Don Bradner
> To: WanderlodgeForum@yahoogroups.com
> Sent: Tuesday, June 05, 2007 2:57 PM
> Subject: Re: [WanderlodgeForum] Tank level probes
>
>
> I didn't see any response from this, posted May 9th. Today I flushed the
>waste tank very thoroughly and removed a couple of the level-sensing
>screws.
>
> What I found was that they are inserted into a specialized rubber
>grommet, which has a captive nut on the inside, and when you tighten it
>swells up to seal the connection. The two I removed were in bad shape,
>typical for 17-year-old rubber exposed to wastewater, I suspect.
>
> Earl says he has them in stock at $1.08 apiece, so I ordered 16 to do
>both black and grey tanks.
>
> Don Bradner
> 90 PT40 "Blue Thunder"
> Eureka, CA
>
> On 5/9/2007 at 8:58 PM Don Bradner wrote:
>
> >OK, new topic: What can folks tell me about the probes on the waste
>tank?
> >
> >My LED gauge appears to have two conditions: 1 it reads smack-on
>correct,
> >or 2 it reads empty.
> >
> >Having seen only the first in my early experience, and having past SOB
> >experience where an empty tank would gradually read full, only showing
> >true empty if it was severely flushed, I was pretty happy.
> >
> >Unfortunately on this trip the 2nd condition has been the norm. What
>I've
> >found is that all, or most all, of the screw pairs are loose, and will
>not
> >tighten. Some signs of leakage around some of them.
> >
> >If I pull screws out, what will I find (besides the obvious in a waste
> >tank)? is it possible that I could fill the holes with epoxy and
> >drill/retap, or anything similar? Anybody run into the problem and have
>a
> >fix?
>
>
>
>
>
>[Non-text portions of this message have been removed]
>
>
>
>
>Yahoo! Groups Links
>
>
>






Dru and Debora
Corpus Christi, TX
1983 FC 35 RB

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