Fresh water tank new level system

[DetroitDan]

I pulled the freshwater tank to address a few leaks around the defunct level float and decided to make the original gauge work again.

I used four inexpensive float switches and four resistors to cause the gauge to read (approximately) E, 1/4, 1/2, 3/4, and F.

The system works great! And, "welding" the cracks with a large soldering gun, and HF heat gun, a high-temp glue gun, strips cut from a milk jug, and
high-temp glue sticks (eventually) produced a leak free tank!

One more check mark off the list!

Level sensors: http://https://www.amazon.com/gp/product/B01J3WGAYU/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1

Project pictures: http://http://www.gmcmhphotos.com/photos/g7159-fresh-water-tank-restore.html

--
Dan Wallace
Detroit Metro
1974 Canyon Lands 260
Headers, 3.55, 16"
Floor plan 26-9

 

[michael1]

I repaired my fresh water tank about 7 years ago.
It has developed new leaks and this time I am just going to replace it.
Just a warning that the repairs will last, but new leaks will develop.

Cool project though.
--
1973 GMC 26' Glacier - Unknown Mileage - Has a new switch pitch transmission with Powerdrive

 

[Jim Hupy]

The fresh water tanks are usually made of a different plastic than the
holding tanks. One that can be successfully repaired by plastic welding and
adhesives that melt the plastic. Add the fact that the bottom and sides are
supported by structure, as well as shielded from the sunlight and freezing
temperatures, and you have a situation that lends itself to repairs rather
than replacement. My tank outlet fitting had been stripped out by
overtightening, and leaked constantly. I removed the tank and took it to a
plastic tank manufacturer, and one of the employees, on his lunch hour,
took a hot knife, cut out the offending fitting, and welded in a new one.
Think I paid him $20.00. Been fine since 1997.
But, I would not waste that much effort on waste tanks. Once they
crack and leak, they are shouting at you "Replace me, don't try to repair
me".
Jim Hupy
Salem, Or
78 GMC ROYALE 403

> I repaired my fresh water tank about 7 years ago.
> It has developed new leaks and this time I am just going to replace it.
> Just a warning that the repairs will last, but new leaks will develop.
>
> Cool project though.
> --
> 1973 GMC 26' Glacier - Unknown Mileage - Has a new switch pitch
> transmission with Powerdrive
>
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[slc]

> I pulled the freshwater tank to address a few leaks around the defunct level float and decided to make the original gauge work again.
>
> I used four inexpensive float switches and four resistors to cause the gauge to read (approximately) E, 1/4, 1/2, 3/4, and F.
>
> The system works great! And, "welding" the cracks with a large soldering gun, and HF heat gun, a high-temp glue gun, strips cut from a milk jug,
> and high-temp glue sticks (eventually) produced a leak free tank!
>
> One more check mark off the list!
>
> Level sensors: http://www.amazon.com/gp/product/B01J3WGAYU/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1
>
> Project pictures: http://www.gmcmhphotos.com/photos/g7159-fresh-water-tank-restore.html
>
>
> My Potable water tank appears to be made of a fibre glass material. Made in layers and the outside layer is crackled, like some of those lighting
> fixture globes. I had water in it shortly after I bought it but because of some PO modifications to the lines, such as the overflow line dumps in
> the bathroom?????? have not used it since.
> -- This is an OEM tank for the 1974 Motorhome production run. I have toyed with the idea of using resin and Fibre glass cloth to cover the
> outside layer to strengthen it and maintain the water holding abilities. I have not found a tank that will fit in the same area where the OEM is
> without some modification to the back area including the bed area.
> -- The float ( level ) system needs to be upgraded as well and I have pondered adding a top access to the tank for inspection using a marine deck
> plate.
> Planning to eliminate the outside water hose connection on the driver side as it is made of plastic which is much too old now to trust from
> breaking under pressure.

--
GatsbysCruise. \
74GMC260 Former Glacier Model style. \
Located in Waukegan \ Keep those MiniDiscs Spinning \ MY GREYHOUND IS FASTER THAN YOUR HONOR ROLL STUDENT \ WindowsXP-Win7-Win8.1-UBUNTU STUDIO -
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