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air conditioning service valves[ALL/1998] posted by mike on
Saturday, 28 June 1997, at 10:09 a.m.
i have a 1989 240 gl and cannot find the low and high pressure air conditioning service valves. i am also thinking about switching to r134a. has anyone used a conversion kit, and did it work...?
Re: air conditioning service valves[ALL/1998] posted by Michael McBroom on
Saturday, 28 June 1997, at 10:34 a.m.
I dunno how different an '89 240 is from an '87 or '88 740/760, but the R12 service valves on my systems are located at the reciever drier and one each for the high and low sides on the compressor.
Regarding the retrofit, I've heard that it's expensive on earlier 240 models, but since yours is an '89, it may not be any more so than the 700-series. I converted my 760 over to R134a using Volvo's conversion kit (~$88 -- but the price varies by car model). Had a shop evacuate it first, then recharge it after I finished the installation. The car blows ICE COLD air. I plan to convert over my 740 soon, since it's blowing air that's just barely cool.
Remember, if you decide to DIY, you must drain ALL old oil out of the compressor (undo the filler plug to drain it). I ended up removing the compressor completely, so I could invert it. I recommend that you find a source of compressed air, so you can blow out all the lines too. While you're down there, check your crankshaft pulley. If it wobbles, you may as well replace it, too ($120 aftermarket, $146 from my local Volvo dealer). And if it's about that time for a new timing belt, guess what? :)