[T3] fuel tank leak

Jim Adney jadney at vwtype3.org
Sun Jul 3 09:50:03 PDT 2011

On 3 Jul 2011 at 8:21, Jim Adney wrote:

> On 30 Jun 2011 at 18:36, Dave Hall wrote:
> > 311 201 235 for the 6mm pipe (up to '67 models) and 235A for the 8mm pipe
> > from '68 models.  
> I've used ordinary nylon washers from a hardware store to replace the 
> special alum sealing washer under the screw you remove on the fuel 
> ring to connect a pressure gauge. I wasn't sure if that was going to 
> be a good fix, but I've had them last for decades.
> If you could find something the right size for your fuel tank 
> connection, nylon should last even longer there, where it's cool.

I just checked the used fittings I have here, and I find a single 
sealing washer, between the filter sock flange and the flange on the 
outlet pipe. I guess the flange on the sock is expected to deform 
enough to seal against the tank nipple. That's also where the 
microfilm shows the sealing washer, and it only calls out 1 washer 
per car.

Try some nylon washers. If you can't find something exactly right, 
buy some with the right OD and use a tapered reamer to modify the ID 
to fit. Look at the flange on the filter sock. If it's rough, modify 
another nylon washer to seal between it and the tank nipple. That one 
will need a larger hole.

Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA

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