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Date: Thu, 28 Sep 2000 16:58:13 -0700
From: Johannes H Andersen <johannes.andersennopsamel.ac.uk>
Subject: Re: Solve this Master Tech


Mike F wrote: > > Ask The MasterTech wrote: > > > > Hi Johannes, > > One of two things. Either the A/C system is overfilled making the compressor > > overwork or the compressor is beginning to fail inside. Compressor failures > > on Saab (as with many other cars) are a very common failure because most > > people tend to leave them on all the time inadvertently.Hopefully this will > > help. TW <johsnopsamsafish.com> wrote in message > > news:39D2626D.EBB8FEC2nopsamsafish.com... > > > On my Saab 9000 CSE 1993 75000 miles, the A/C pump wheel emits a noise > > > (A/C off) which one normally would associate with lack of lubrication. > > > The noise is not audible inside the car, but it worries me if the unit > > > is about to fail. I asked the Saab dealer about it, he said there are > > > no lubrication points or requirements for this unit. A replacement pump > > > would cost around £500 ! This is a lot of money for a bit of cold air. > > > What should I do now ? > > > > > > Johannes > > Interesting that the overfilling would make any noise with the A/C off. > If there is noise at the front of any A/C compressor with the A/C off, > it's caused by the bearing that allows the A/C drive pulley to freewheel > without turning the compressor. The worst part of this is that part is > normally a standard ball bearing that costs no more than $10 if you buy > it separately. Sorry I know nothing of Saabs, but you may be able to > remove the pulley and lubricate this bearing. This may make it last for > 2 more hours or forever, depending on how lucky you are. (I did this on > a Volvo once, about 8 years ago. My brother still has the car, A/C > works fine.) > > -- > Mike F. > Thornhill (near Toronto), Ont. > > Change cant to ca and remove parentheses to email me directly. Thanks, I will try to lubricate the bearing if I can get access. Not much space around the unit and A/C hoses are in the way. Johannes

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