brass fitting for gas lines on TD-20 Johnson outboard

[td20]

copper gas lines with brass fitting

The brass fitting for my 3/16 copper gas lines are very difficult to work with. I viewed a video on YouTube about joining compression fitting and my fitting don’t work that way at all. My fitting are very tight, like the threads are mismatched. Do these fitting have some type of special threads ? Do these fitting have a short life for loosening and tightening them ?? I used 3/16 inch nuts and compression sleeves from AutoZone.

[RICHARD A. WHITE]

Do you have pictures of the fitting(s)

http://www.richardsoutboardtools.com
classicomctools@gmail.com

[frankr]

Compression fittings should be easy to take apart and reassemble. But if you are talking about the tapered pipe threads, like where it screws into the tank, yes they are designed to wedge together tightly, and generally also need a sealer.

Yes, compression fittings do wear from repeated disassembly and retightening. It is the sleeve that wears. You can see the groove at each end of the sleeve. Some grooving is normal (the "compression" in the description). But deep mashing of the ends of the sleeve is not good. Overtightening, even at the first time of assembly will also mash them and ruin them.

https://en.wikipedia.org/wiki/Compression_fitting

[drdipstick]

I have just restored 2 TD-20’s and took apart 6 parts motors to accumulate a good supply of usable parts to do the work. I have several of these copper lines and will be glad to send you one. Have other parts available including some good coils.
Dick Rheutan

[Author]

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