Replacement tank oring.

Fitting new fuel tanks to Lady Mable.
Spectra Premium fuel tanks from Canada.
Quality looks great. Fit is awesome.
Filler neck oring is being a pain.

I know that it fits inside the neck before assembly. Lubricated. Chamfered and polished alloy assembly, to ease fitment.
Still no joy. I have even stood on top hoping for a nice "Schlock" as she slid home. Nothing.

I considered fitting the four screws and pulling it down, but dismissed that idea. I can see tears flowing when the alloy cracks.

Besides removing more material from alloy, I am at a loss.

Has anyone else encountered this issue and come up with a solution.

Cheers.

 

I fitted mine after fitting the tank. It was a stiff fit but by moving it around gradually went in.

 

You can buy O rings sized to order quite cheaply. That O ring looks miles too big to me, it should be a tight fit around the metal fitting. I would order up a new one in a smaller ID and slightly smaller cross section ID.

 

I thought the same thing.

The oring came with the tank, from the manufacturer. The tanks seem to be top quality and so I imagine that the oring is correct size for purpose.

Oring has to sit inside tank, prior to filler neck installation, so must be large enough diameter to remain seated until filler neck is pushed in.

The filler neck assembly seats down inside the bodywork recess, so does not allow much room to rotate as it is being pressed in.

 

I agree that the o-ring looks too fat.

I think I have some filler necks in a box somewhere. I'll take a look at the o-rings and compare.

Cheers
DD

 

Awesome. Thank you, Doug.

 

What a mission!

More chamfering, freezing and a dedicated Jaguar tool!


My second dedicated Jaguar tool.



After standing on top of filler neck with my whole body weight and still no joy, I had to think again

This gave me the ability to push down and twist side to side at the same time.

Finally. Success. Now to repeat the whole process on the RHS.

SIGH.

 

Having just bought two new fuel tanks and dismantled everything for my 71 XJ6, please tell me it is not this hard. My rule of thumb is if it takes that much pressure, something is clearly, (or Not so clearly) wrong or misfit?

 

I though exactly the same thing.

I removed the oring and everything fell into place, beautifully. I concluded that it was just the oring causing the issue.

I have encountered captive oring fitment before, mostly on motorbikes, where you have the ability to push and twist at the same time. This method promotes fitment.

The Series One filler neck assembly being recessed does not allow much twisting as you try to push the assembly into the oring. The design of the casting only really allows thumb and forefinger of each hand to apply the pressure during fitting.

This combination of limitations adds up to make it no easy task.

With the aid of the tool, it was nowhere near as challenging.

I am fitting the RHS tank today, after treating the void to some love and a small rust repair at the recess.

I will update on my struggles with this side when done.

I am hopeful of the process going smoothly, now that I have a tool and a technique.

I hope that you have a relatively easy time, with yours.

 

One additional thing to note.

The steel fuel lines that run from the tank to the fuel pump sit in 50 years of accumulated crud, in the void behind the muffler.

Be sure to remove the lines from the vehicle and give them a buff on the wire wheel.

Three out of the four fuel lines of Lady Mable were corroded through. Luckily I only need to refit one each side.

The RHS supply line has a pin hole which will be repaired.

 

RHS tank fitted to Lady Mable and the filler neck assembly was a struggle, again.

I was aware of what I was up against, after having done LHS, but still let off a few "F" bombs.

Unsure if the supplied orings were too thick or if this is how it needs to be, but they're not coming out for another 50years.