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  #1  
Old June 18th, 2014, 08:11 AM
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Exclamation Auxiliary Tank

Hello guys,

I have a second fuel tank under the passenger seat at my 87 110 sw county.

Does any one knows how to activate and deactive it ? What is that switch for ?



Thanks alot.
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  #2  
Old June 18th, 2014, 08:48 AM
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Does the fuel line from the tank go to the valve connected to that handle?
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Old June 18th, 2014, 08:53 AM
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Quote:
Originally Posted by Red90 View Post
Does the fuel line from the tank go to the valve connected to that handle?

Yes it does go.
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Old June 18th, 2014, 08:57 AM
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Follow the line from the valve. Willing to bet it goes to the main tank.

If you have never used it, wondering how much crud it would introduce into the fuel lines.
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Old June 18th, 2014, 09:02 AM
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Quote:
Originally Posted by Rocky View Post
Follow the line from the valve. Willing to bet it goes to the main tank.

If you have never used it, wondering how much crud it would introduce into the fuel lines.

I never touched the valve. The valve was at up position When i bought it. Former owner said that do not touch it.

So is it active or not ?

------ Follow up post added June 18th, 2014 01:06 PM ------

Bigger picture.

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Old June 18th, 2014, 09:31 AM
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The valve is manually operated.
The lines from the other tank should also run to the valve and allow you to switch from tank to tank.

Caution: these valves have a cork gasket that often gets hard and breaks.
The result is a leak and or air entering the system.

It is often that you will find the valves shut off and the fuel lines joined in order to bypass the auxiliary under seat tank for the above reasons.

In order to use both tanks, I wire a main/aux 12V switch that uses a standard 3 way 12V fuel solenoid change over valve.
You can also wire the fuel gauge through a relay also activated by the switch.
In that way when you switch fuel tanks the sending unit also switches for the tank in use and the fuel gauge switches readings tank to tank.

That manual CAV change over switch is a failure and if it is not bad already, it's a failure waiting to happen.

Hope this helps.
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Old June 18th, 2014, 09:40 AM
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These are old vehicles. Nobody on the internet can figure out what has been done to your truck. 99% of these vehicles have been modified. You need to look and trace everything to see what is there.

If it is hooked up and connected, I would drain and clean the tank and flush out the lines before using it.

Make sure you investigate what is happening with the return lines and whether or not they are switched as well as the supply lines.
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Old June 18th, 2014, 09:47 AM
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Quote:
Originally Posted by Red90 View Post
These are old vehicles. Nobody on the internet can figure out what has been done to your truck. 99% of these vehicles have been modified. You need to look and trace everything to see what is there.

If it is hooked up and connected, I would drain and clean the tank and flush out the lines before using it.

Make sure you investigate what is happening with the return lines and whether or not they are switched as well as the supply lines.
My vehicles is not modified, it is original as factory shipped. It is hard believe but it is.


Thank you very much to all of you.
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Old June 18th, 2014, 10:31 AM
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Quote:
Originally Posted by Desert Lion View Post
My vehicles is not modified, it is original as factory shipped. It is hard believe but it is. Thank you very much to all of you.
No SW has supplementary fuel tanks from the factory. It's a prior owner modification that had clearly stopped working.

Sad to read that you don't accept people's advice.
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  #10  
Old June 18th, 2014, 10:37 AM
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Quote:
Originally Posted by Rocky View Post
No SW has supplementary fuel tanks from the factory. It's a prior owner modification that had clearly stopped working.
And why do you say this? I've seen more than one. Are you making a distinction between LR parts and "from the factory?" Because that's the only conceivable way you'd be correct.

That being said, that doesn't exactly look like the OEM changeover valve.
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Old June 18th, 2014, 10:49 AM
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Having seen and worked on a lot of "factory" or fitted with genuine parts setups, the aux tank is of factory parts including what I can see of the manual valve in the pictures.

The picture is not quite large enough to be 100% certain, but all the parts sure look "from the factory".

The same or similar are very very common if not standard on series military vehicles and the identical or very similar parts were used on 80s era 90s & 110s.

In Turkey there was a Land Rover assembly plant that turned out 110s and other models for the "local" markets.

One thing is for certain, there is NO hard and fast rule that says a Land Rover did or did not come with aux fuel tanks with a manual change over valve or for the other parts that show up in the offical Land Rover Factory Optional Equipment Catalogue.
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UD: "Just Power through it man!"
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Old June 18th, 2014, 10:49 AM
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Quote:
Originally Posted by Desert Lion View Post
My vehicles is not modified, it is original as factory shipped. It is hard believe but it is.


Thank you very much to all of you.
So then can't you just call your local Land Rover dealership?
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  #13  
Old June 18th, 2014, 11:35 AM
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My '66 NAS 109" has the same 10 gallon aux setup and I believe it to be original. Though I cannot tell if the valve is the same from your pics. My valve leaks just like it is supposed to.........
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  #14  
Old June 18th, 2014, 11:39 AM
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So then can't you just call your local Land Rover dealership?

They don't know it. The vehicle imported from UK.
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Old June 18th, 2014, 12:03 PM
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Auxiliary Tank

Quote:
Originally Posted by taoseno View Post
My '66 NAS 109" has the same 10 gallon aux setup and I believe it to be original. Though I cannot tell if the valve is the same from your pics. My valve leaks just like it is supposed to.........

I will clean it this week and take better pictures from in and out. Mine doesn't leak. Everything looks very fine.

Thank you so much again to all of you mates!
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Old June 18th, 2014, 12:48 PM
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Google for the Defender 110 part catalog and download it. All the pieces are shown in there and you can see how they are connected. This is the 10 gallon, Station Wagon, extra fuel tank. The hose at the back is the fuel supply and the one at the front the return.

The manual only shows a solenoid changeover valve for 110s, but who knows what gets supplied in all markets.
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  #17  
Old June 18th, 2014, 04:56 PM
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I would check the series3 manual, a lot of early 110s had series3 parts used on them, mine seemed to be a bit of a mix.
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  #18  
Old June 19th, 2014, 08:02 AM
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Quote:
Originally Posted by paul c View Post
I would check the series3 manual, a lot of early 110s had series3 parts used on them, mine seemed to be a bit of a mix.
Okey paul let me know please. Thanks alot.
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Old June 19th, 2014, 08:55 PM
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Quote:
Originally Posted by red90 View Post
google for the defender 110 part catalog and download it.
url ?
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Uncle "Richard" Douglas has a Land Rover with big wheels that never gets stuck... until he breaks something so it won't go. Uncle Douglas always breaks something. - Anna Crowther at the Conclave 2012 (AKA Carburetor Neck)

"What's with this death wobble, Uncle Douglas, I can't keep it in 1 lane?"
UD: "Just Power through it man!"
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  #20  
Old June 19th, 2014, 09:00 PM
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Quote:
Originally Posted by rdavisinva View Post
url ?
http://bit.ly/1srVBGG
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