Copper washer hack - Printable Version

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+--- Thread: Copper washer hack (/showthread.php?tid=6551)

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Copper washer hack - Richard - 01-11-2022

During the generator project I stumbled into a neat hack for copper sealing washers. They must be annealed if you are going to reuse them. Annealing is simple. Heat to dull red with a propane torch and dump into water. Softens them up so they seal.

I had struggled with getting the banjo bolts on the diesel engine to seal in the past, worrying that inwould over torques and break the bolt. 

No leaks this time and without excessive tightening

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RE: Copper washer hack - BusNit - 01-11-2022

Thanks for the tip! I used to shmear (Like cream cheese on a bagel) (Heck I could go for one of those right about now) a bit of black RTV to help seal. Not very pretty unless I wasn't feeling lazy and would actually wipe up the excess...

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RE: Copper washer hack - Doug Musick - 01-11-2022

OK, I have to ask, where are copper sealing washers used on the generator?

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RE: Copper washer hack - Richard - 01-11-2022

Doug,

They are used in five places that I had to disconnect and reconnect. At the bottom of the injector hole to seal the injector tip to the block, at the return fuel line connection of the injector itself, on the connection of the return line to the injector pump, on the fuel line into the injector pump, and on the oil supply line to the turbo.

https://www.amazon.com/Hose-Banjo-Fitting/s?k=Hose+Banjo+Fitting This is the idea, these are not parts for the generator, just a picture of a banjo bolt, and the washers used to seal it.

These are common on hydraulic systems and automotive brake systems.

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RE: Copper washer hack - Doug Musick - 01-12-2022

Thanks Richard, that helped a lot. Once a saw the pic I immediately was aware of one on my generator fuel supply line because is has a small drip that I wipe up occasionally. Now I know what to do to solve it I believe.

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