"Having the right tools is also very important."--Yak
When dealing with AC lines.... it is always suggested that two wrenches be used.. and often the proper wrenches will be what is called ' Line wrenches " or "?"... these are open end wrenches which wrap more than 180 degrees around the nut. But are still large enough on the open side to fit over the tube next to the nut or fitting... so they can be used in tight places to protect the line from being crunched...which is the most important place to exercise caution because having to replace the line in a tight place is really a chore.
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