Back in the olden days when I was a kid I was taught how to make a flare connection that would never leak.
Old John taught me that you should never tighthen a flare nut with an open end or adjustable wrench. One should always use a FLARE NUT WRENCH to tighten a flare nut.
The reason is that when you tighten a flare nut with an adjustable you are applying pressure only on 2 points at one time. With a flare nut wrench you are applying pressure on 6 points of the nut all at the same time. There is no chance of distorting the flare or the flare nut.
So this has always been my practice until NOW! All of these ductless split systems are coming into this country from places as far away as Mars. On the 3/4 OD suction lines they put a metric gigantic flare nut. It would take a 36mm flare nut wrench to properly tighten this nut. Ain't nobody got no 36mm flare nut wrench
The Sanyo rep. said, "Have you tried the internet?" Hmmm...geeez no wonder why I am a lowly contractor. I never thought of that!
If anyone can suggest a supplier of a 36mm flare nut wrench please let me know. Yes, I did try the internet and every automotive and AC supplier.
[Edited by benncool on 03-03-2005 at 02:29 PM]