oil supply leak solution

yngnor · Mar 17, 2015

Hey guys, I am a new Comer in the classic norton world and I am having a hell of a time trying to seal the threaded oil supply connection to the old tank on my 1972 commando roadster. Can anyone guide me to a solution?

comnoz · Mar 17, 2015

yngnor said:
Hey guys, I am a new Comer in the classic norton world and I am having a hell of a time trying to seal the threaded oil supply connection to the old tank on my 1972 commando roadster. Can anyone guide me to a solution?

That would normally require nothing but a couple good seal rings for the banjo fitting. Are you sure the leak is not from a cracked bottom tank mount? Jim

yngnor · Mar 17, 2015

Yes, the tank is fine. I did a good inspection. What material or seal rings do you suggest?

comnoz · Mar 17, 2015

yngnor said:
Yes, the tank is fine. I did a good inspection. What material or seal rings do you suggest?

I prefer copper rings. Jim

yngnor · Mar 17, 2015

Do you use any kind of gasket or liquid gasket with the copper washers? Or are you referring to copper rapped rubber compression rings?

Anonymous · Mar 17, 2015

yngnor said:
Hey guys, I am a new Comer in the classic norton world and I am having a hell of a time trying to seal the threaded oil supply connection to the old tank on my 1972 commando roadster. Can anyone guide me to a solution?

Perhaps Dowty washers.
http://86.43.94.97/moodlecp9a/file.php/ ... csheet.pdf

comnoz · Mar 17, 2015

yngnor said:
Do you use any kind of gasket or liquid gasket with the copper washers? Or are you referring to copper rapped rubber compression rings?

I have never found sealant was necessary. I just use plain copper washers and snug it up good. If that doesn't hold then there must be a blemish on one of your sealing surfaces or a crack you haven't seen. Jim

toppy · Mar 17, 2015

needing said:
yngnor said:

Hey guys, I am a new Comer in the classic norton world and I am having a hell of a time trying to seal the threaded oil supply connection to the old tank on my 1972 commando roadster. Can anyone guide me to a solution?

Click to expand...

Perhaps Dowty washers.
http://86.43.94.97/moodlecp9a/file.php/ ... csheet.pdf

Am with Needing on this one Dowty washers work best and dont need large amounts of force to seal so are safe of oil tank and sump plug without risk of thread damage. The world has moved on from copper washer.

Snorton74 · Mar 17, 2015

I used copper crush washers and no liquid gasket.

Dean · Mar 18, 2015

Do you guys anneal copper washers each time you use/reuse them?

kommando · Mar 18, 2015

Copper washers should be annealed every time, they harden when compressed so they need to be returned to fully soft.

Biscuit · Mar 18, 2015

kommando said:
Copper washers should be annealed every time, they harden when compressed so they need to be returned to fully soft.

The sealing surfaces are seldom perfect but a soft copper washer will conform to small irregularities and seal. If reused without annealing, the small irregularities of the washer against the now not matching ones of the sealing surface can leak. Annealing will allow the washer to re-conform to the surfaces.

oil supply leak solution

yngnor

comnoz

yngnor

comnoz

yngnor

Anonymous

Guest

comnoz

toppy

Snorton74

Dean

kommando

Biscuit

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