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Unread 07-20-2010, 05:45 AM   #1
AlexGeorgakis
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Soldering the copper tube of an ARB seal housing?

The small copper tube on the seal housing assembly of my rear ARB locker has got a small hole in it. It hasn't sheared off or anything. I've ordered a new part but I was wondering if some solder used for plumbing pipework would hold up as a permanent fix. This way I could use the repaired seal housing as a spare.



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Unread 07-20-2010, 05:59 AM   #2
Sundowner
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It should hold...if it's done right. A repair-type fitting soldered in place over the damaged area will be your best bet, as it gives the solder a massive amount of surface area to which it can adhere...so it's kind of like capping a rabbit hole by building a parking lot over it. That said, 100 psi is regularly used to pressure-test household copper water lines, and I've run a LOT more pressure than that through a copper line before. You should be fine if your soldering skills are up to the task.
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Unread 07-20-2010, 06:10 AM   #3
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The most impotent part is to make sure the parts you solder are clean! Before you solder them.
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Unread 07-20-2010, 06:19 AM   #4
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Quote:
Originally Posted by tractor1 View Post
The most impotent part is to make sure the parts you solder are clean! Before you solder them.
The line itself is in very good shape. A good wipe-off with a rag will take off most of the oil, and the flux itself will clean the rest of the joint. Like I said...skills.

Something you may want to do is make sure the line itself is open at a fitting, or the hot air created by the torch could blow the liquid solder back out of the repaired area. There's not a lot of expansion room in a line that small, so the heated air pressurizes quickly.
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Unread 07-20-2010, 06:45 AM   #5
AlexGeorgakis
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Great! Thanks!
I've done some copper pipe soldering before (a long time ago) so it shouldn't be difficult. I'll try it out and let you know!
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Unread 07-20-2010, 06:58 AM   #6
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Buy some icemaker tubing and practice first (1/8th soft copper).
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