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aux air tank leak

I am getting bolder into tackling some leaks and the aux tank is leaking right at the weld where that 1/4 goes in.

Can I reweld that or just get new tank(does anyone have a part number or a place where won't cost an arm and the other leg)
Also looking for a place where I can buy the air line fittings at an affordable price please share any suggestions looking for the ones that don't leak.
A friend of mine told me to get the treaded ones I would appreciate some help with parts if anyone know something.
2003 Foretravel u320 build 6066
cummins 450 ism
2008 Jeep Cherokee Toad
former Country Coach Owner.
Part time Rv er
Never afraid to learn.

Re: aux air tank leak

Reply #1 –
I would get a new tank.

I get my air fittings from Fleetpride.  I try to the the compression fittings since I don't think they will ever leak like the push on ones do.

There has been some discussion on here about replacing tanks.  Might do a search to see if you can find them.
2014 ih45  (4th Foretravel owned)
 1997 36' U295 Sold in 2020, owned for 19 years
  U240 36' Sold to insurance company after melting in garage fire
    33' Foretravel on Dodge Chassis  Sold very long time ago

Re: aux air tank leak

Reply #2 –
Quote from: danilaprepeleac –
Can I reweld that or just get new tank(does anyone have a part number or a place where won't cost an arm and the other leg)


Per the 2003 U320 parts manual (in the Files section), here are the relevant pages with part numbers/descriptions if you're talking about the skinny tank for the slide bladders.

Not sure who the vendor was, but it shows just the tank as having part number 8001 1 EA AIR TANK, 8" X 32", SLIDEOUT



Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320

Re: aux air tank leak

Reply #3 –
After more research I found this 2 tanks

This one is the more expensive and it has the correct mounts and ports  and orientation I guess it's called a smiley face tank
So this one looks identical to the one I have on the FT

Tramec Sloan 461026 Air Brake Reservoir + Cross Reference | FinditParts

This one is cheaper and it does have an extra port on the face of it
Original has one this one has 2 which can be plugged np.
Fontaine Magnitude Lowboy Air Tank 51475007 | ILoca Services, Inc.

Am I missing something??
2003 Foretravel u320 build 6066
cummins 450 ism
2008 Jeep Cherokee Toad
former Country Coach Owner.
Part time Rv er
Never afraid to learn.

Re: aux air tank leak

Reply #4 –
I don't know what shape your tank is but I would weld a tank that is in good shape.
Peter and Frieda Morin
1999 36ft. U320 Foretravel
Build # 5436
1998 Suzuki Sidekick Sport

Re: aux air tank leak

Reply #5 –
Very common for a weld to leak at the end of the weld do to porosity or cooling. Leaves a little hole that may leak. May check good then start leaking years later. Not corrosion related I would weld

Re: aux air tank leak

Reply #6 –
Quote from: dsd –
Very common for a weld to leak at the end of the weld do to porosity or cooling. Leaves a little hole that may leak. May check good then start leaking years later. Not corrosion related I would weld
I guess I have to take to front port off and check for extensive corrosion
On the other hand to weld is another labor intensive process if you are like me and don't have a welder and have to go to someone that can weld.
Even then the process of taking the tank off clean area ,weld,repaint and reinstall  not sure if it's gonna hold and I may end up spending more time and money at the end.
I don't think that you can weld the tank in place without removing it.
 Also when I was spraying the tank while it was under pressure I was noticing like a mist jet  coming from the area

My fitting is leaking and I will change that and then see if the problem persists
The problem is that the lines are so tight that there is no slack
They say to clip a bit of the line  when you open it and it creates a little recesed  ring to clip it so the next time you push it in it goes past it but if I do that the line will be stretched where it will tug on the connection itself
2003 Foretravel u320 build 6066
cummins 450 ism
2008 Jeep Cherokee Toad
former Country Coach Owner.
Part time Rv er
Never afraid to learn.

Re: aux air tank leak

Reply #7 –
You may want to look getting at a roll of DOT Brake Line and a DOT Brake Line Fitting Kit.  Depending on where the lines go, you can just run a new line with a little slack and new fittings.
Good quality lines and fittings are relatively easy to work with and just need basic tools.
Then you'll know you have new lines and fittings and done right.
Mark & Bev
2001 U295 36' Slide
Cummins ISC 8.3 350HP
Build #5802
Jeep Wrangler Toad

Re: aux air tank leak

Reply #8 –
Quote from: MarkC –
You may want to look getting at a roll of DOT Brake Line and a DOT Brake Line Fitting Kit.  Depending on where the lines go, you can just run a new line with a little slack and new fittings.
Good quality lines and fittings are relatively easy to work with and just need basic tools.
Then you'll know you have new lines and fittings and done right.

I ordered me some compression kit and lines from Amazon (mainly cause I don't know a local supplier that is affordable and most of the trucking industry stores and suppliers are some 20 miles away and without a commercial account everyone wants full price)once here I will run them to my Mechanic to have him take a look and approve 
Every time I open one of those push to connect it kind of compromises the seal and needs to be shortened .
I don't necessarily like Amazon but for the price and convenience it's an option that I find myself go to more often.

2003 Foretravel u320 build 6066
cummins 450 ism
2008 Jeep Cherokee Toad
former Country Coach Owner.
Part time Rv er
Never afraid to learn.

Re: aux air tank leak

Reply #9 –
I had a similar problem but with a pin hole leak at the bottom of the tank; the lower part of the tank had rusted on the inside, since the tank had no drain valve.  After a lot of looking, I found an aluminum tank that works great and is an improvement on the original since it is rust proof and has a drain valve port.  I've attached photos of tank and invoice.  Good luck.
2000 U320 mid entry  #5688
2006 Jeep Liberty


USMCR retired
SDFD retired
FEMA US&R TF8

Re: aux air tank leak

Reply #10 –
Quote from: Sven and Kristi –
I had a similar problem but with a pin hole leak at the bottom of the tank; the lower part of the tank had rusted on the inside, since the tank had no drain valve.  After a lot of looking, I found an aluminum tank that works great and is an improvement on the original since it is rust proof and has a drain valve port.  I've attached photos of tank and invoice.  Good luck.
Swen
The tank that I am talking about is underneath the coach right behind the generator  it's a little bigger than the one that you have posted

I will call this guys to see if they have a bigger one I like the aluminum idea
I am trying to attach pics but I don't see the attach icon here
I will have to get under the coach and see if the straps idea is viable but the tank you have is smaller and that will call for more often generator starts.

2003 Foretravel u320 build 6066
cummins 450 ism
2008 Jeep Cherokee Toad
former Country Coach Owner.
Part time Rv er
Never afraid to learn.

Re: aux air tank leak

Reply #11 –
You need to press reply to find the place to download pictures
Peter and Frieda Morin
1999 36ft. U320 Foretravel
Build # 5436
1998 Suzuki Sidekick Sport

Re: aux air tank leak

Reply #12 –
Quote from: oldguy –
You need to press reply to find the place to download pictures

Just go to "Forum Instruction Manual"-- several good posts on how to post pictures.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: aux air tank leak

Reply #13 –
Quote from: danilaprepeleac –
I am trying to attach pics but I don't see the attach icon here
To post images, you have to be in "full editor" mode.  There are several way to get there

1) Use the Reply button found at t the top/bottom of the topic you are viewing.  Doing that you will be in full editor and have a way to attach files.
2) If you use the Quote button at the bottom of a post OR if you scroll to the editor at the bottom of the page, that is Quick Reply (you will see "Quick Reply" right above the editor toolbar B I U etc.) Should you decide to add a file, simply select Preview and you will find yourself in the Full Editor.

Once in the full editor you will see a add files area right below the editor.
2000 / 36' / U320 / WTFE
WildEBeest / "Striving to put right what once went wrong"