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Topic: Threaded attachment points on holding tanks -- what for? (Read 717 times) previous topic - next topic

Threaded attachment points on holding tanks -- what for?

For lack of a better word, these "bobbins" with a threaded insert in them -- as seen in the pic. What are they for?

Maybe some other sensor scheme (SOB) used these? -- It sure would be a better and more secure method than the aluminum sticky-tape capacitance sensors.
Michael
1995 U300SE CAT 3176B Build # 4612 ("Marvin")

Re: Threaded attachment points on holding tanks -- what for?

Reply #1 –
Michael, I believe what you're referring to are actually sensors for another scheme that may have been installed by the previous owner. Something along these lines perhaps...
Don
RV Holding Tank Sensors - Get accurate grey and black holding tank monitor
The selected media item is not currently available.
Don & Tys
1999 U270 3602 WTFE #5402
Xtreme Stage 1 w/Headlight, Step Conversion, etc.
2009 Honda Fit Sport with Navi
Freedom is NOT "just another word for nothing left to lose"... with apologies to Kris Kristofferson

Re: Threaded attachment points on holding tanks -- what for?

Reply #2 –
Don,

I'm fairly certain they were there from the tank supplier -- to FT.

Maybe someone else can peer at their tanks from the same approx. vintage (1994-5) and see if they also have them.

That link you sent is very interesting.

Ah - Ha! -- these are the probes that are installed, as seen in this video:

How To Install RV Holding Tank Probes

I'll try Gary O's method first of applying new aluminum tape over the existing stuff, and then see if that works.

These probes as mentioned in the video were not that reliable, it would appear. AND -- it would require a whole new monitoring package upstairs that I really would rather avoid having to do -- for now.

Michael
1995 U300SE CAT 3176B Build # 4612 ("Marvin")

Re: Threaded attachment points on holding tanks -- what for?

Reply #3 –
Mine do.
The selected media item is not currently available. Dave Head & Megan Westbrook
Titusville, FL - The Great Outdoors
'98 270 buying this month
Toad is a 2018 F150 XLT

Re: Threaded attachment points on holding tanks -- what for?

Reply #4 –
Those look like the ones in Bill Chaplin's 93 U300.  He is installing SeeLevel gauges and strips.  But has the same sort of parts on his tanks.
Dave Cobb
Buckhorn Lake Resort The Club, #6202, Kerrville TX
check the map.  I do rent it out when I am traveling!
2001, U320, 36' #5887, in Kerrville, FT Club #17006, (7/23 to present)
2024 Jeep Grand Cherokee L, Summit, white
EX: 98 U295, 36' #5219, (mid door), (4/13-10/23)
EX: 93 U225, 36' (4/11 to 4/13)

Re: Threaded attachment points on holding tanks -- what for?

Reply #5 –
I should clarify that the probes I'm referring to that are on my tanks are the ones in the video that are pre-exisiting -- and these guys are showing a improved design they are mounting next to those. It may be that the OEM supplier to Foretravel made all the tanks with these probes already fitted, but FT elected to go with the Audit aluminum tape route for some reason.
Michael
1995 U300SE CAT 3176B Build # 4612 ("Marvin")

Re: Threaded attachment points on holding tanks -- what for?

Reply #6 –
Michael,

My '95 320 does not have them.  Probably a PO put them in.

Keith
Keith, Joyce & Smokey the Australian Cattle Dog
1995 U320 SE Extreme 40' WTBI Build # 4780, with a Honda CR-V hopefully still following behind.
Motorcade # 17030
FMCA # F422159

Re: Threaded attachment points on holding tanks -- what for?

Reply #7 –
Those were spun in by the tank manufacturer, to be used by a different type of monitor system. I have found as Gary O said that many times by adding extra foil tape the sensors would work much better
previous 1984 35 ft ORED 250 HP 3208 Cat       
previous 1998 40 ft U295 CAI 325 hp Cummins
previous 2003 40 Ft u320 build #6140 450 Cummins M11.                                                         
1999 Mazda Miata
Ron, Nancy, Tipper the cat, Max The dog
1997 U 270 36 ft build number 5174 8.3 Cummins

Re: Threaded attachment points on holding tanks -- what for?

Reply #8 –
Quote from: geomm –
Don,

I'll try Gary O's method first of applying new aluminum tape over the existing stuff, and then see if that works.


I have tried to find more on Gary O's applying new aluminum tape but found nothing. How does this work and exactly what type of tape did you use?
The selected media item is not currently available.Kent Speers
Locust Grove, OK
1993 U300 SSE 40' (Restored at FOT 2009) Build 4323
720 watts Solar
6V92TA DDEC Silver Engine
2014 Subaru Outback

Re: Threaded attachment points on holding tanks -- what for?

Reply #9 –
The aluminum foil duct tape (Home Depot, etc) will work if cut to the same width as the old, but you may have to move the wire connection to the front of the tape and use a dab of Ox-Gard under it to get a good connection.  I'd try just putting a new layer of tape on the old first - that's what I did before I recently installed the Seelevel system and it (new foil) cured the fresh tank amnesia.
Dave and Nancy
1999/2013 U270 36' Xtreme
Motorcade # 16774
2013 Subaru Outback
KD0NIM

Re: Threaded attachment points on holding tanks -- what for?

Reply #10 –
On our '95 the new tape restored the sensor.  As Dave said, it needed to be cut to the same width and then burnished well on the old layer for a good contact.  Worked well..
Carol & Jeff Savournin
Usta have a '93 U225 36', Usta have a '95 U320 40', Usta have a '02 U320 40'
Usta have a 2006 Born Free, Usta have a 2011 Phoenix Cruiser
Usta have a 2012 Jeep Wrangler Unlimited 4dr
"Your time is limited, so don't waste it living someone else's life."  Steve Jobs