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Air conditioning line fitting wrenches

1.4K views 8 replies 5 participants last post by  victor  
#1 ·
Question first when tightening up my AC lines how tight do I need them second question do I need to go buy aluminum wrenches or is there a special wrenches to tighten up the lines fittings
 
#3 ·
aluminum wrenches not necessary--just good fitting wrenches. If worried about marring aluminum use a layer of painter's tape on the nuts. I use a small amount of anti-seize on threads especially if aluminum to steel. If o-ring fittings just good and snug. Do not overtighten and stretch threads.
 
#4 ·
Thanks also I had One more question on my Sanderson – 7 compressor I had to change out the manifold should I replace the rubber o- rings if so are they the same seals that I use on the fittings just getting the correct size the 10 and eight the ones I see under the manifold are black and I have a pack of assorted new O-rings but they were the green ones so I was not sure if they’re different O-rings to use