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Old 07-01-2010, 12:35 AM
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Join Date: Apr 2008
Location: Strange Weather NC
Posts: 61
Last few a/c questions....I hope. Please advise

I am redoing the complete system on the 79' 240D again.
Last time I hope.
Does anyone know of a way to get the lower front bolt out of the compressor so I can remove it from the car? It is the York style compressor. I have worked on it for days and I just can't get a wrench in there to turn it. The bolt is broke loose but I can not turn it because the wrench is hitting somethig from every angle.
Do I need a special tool?

My goal is to remove the compressor and drain out all the oil and Start fresh with new oil and a flushed out system.

Can someone tell me what amount of oil goes into a completely empty compressor as an initial oil charge?

What weight should be used or range of weights?
I have seen mineral oil that is 500 sus. Alkabenzene oil that is 150 through 500 weight.

Any thougts on weights for this would be awesome. I'm really looking for what came in it from the factory and then make a decision based on that.

I know you all are tired of talking about a/c systems bu I really need some help on this.
And I searched and found some useful interesting stuff but nothing specific.
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Old 07-01-2010, 08:01 AM
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I can't help you with the bolt, because I can't see what you are dealing with. I have multiple chests full of all kinds of end wrenches, sockets, extensions, universals, gearwrenches, on and on and on. When I'm faced with that I just keep opening drawers until I find something that works. I really wish I could help with it, but I just can't without seeing it.

Try to visualize what extension and universal or a ratcheting boxend, such as brand name gear wrench or something.

As far as oil in the compressor goes, the York's aren't too picky. You don't fill them by volume, you actually fill them through the fill hole and make yourself a dipstick. Most any car that uses one of these type compressors has the shape and dimensions for making a dip stick in their service manual.

The MasterCool A/c Manual has such a diagram. You can probably google for something like "York Oil Check" or something like that and find such a drawing online.

Hope this helps

BTW, I've been talking about auto a/c systems since the age of eight in my Dad's shop circa 1957 and I haven't gotten tired of it yet. I get tired of some of the pushback I get, but I don't get tired of the subject itself.

Last edited by LarryBible; 07-01-2010 at 11:33 AM.
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Old 07-01-2010, 09:28 AM
vstech's Avatar
Join Date: Mar 2006
Location: Mount Holly, NC
Posts: 26,286
agree totally with all larry has said.
I actually get happiest when the a/c questions come in.
I'm not an expert on any particular field, but I've been working on them a LOOOONG time. and it would suck to have this knowledge and not have anyone need it.
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