Quote:
Originally Posted by cfh
Those fittings are SAE, not metric - I think one is 7/8 and the othe 11/16 but my memory could be off. I've had good results with crow's foot wrenches and also by using a cutoff wheel to make a very short-handled wrench. If these fittings have never been apart they can really be stuck and you can do serious damage to the copper pipe going into the evaporator. Use MAP gas torch (like a yellow butane torch) to apply heat (have a fire extinguisher handy too) and also use striking blows with a hammer on your wrench, rather than steady torque, to break the fittings loose. Steady torque will twist your pipes rather than breaking loose the fittings
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You just convinced me to take this job to my indie. He's very knowledgeable with old MBs, but pricy. Depending on the estimate, this maybe the death knell of my AC system. The compressor has also been squealing for a good 5 seconds when I turn it on which probably has to do with a shortage of oil in the system. I'm tempted to add some oil to the system just to see if the squealing goes away.