Hey everyone,

My 91 300D was retrofitted to 134a sometime in 2010 by the previous owner. (a shop did it, I have a receipt in my records book). I am not sure what work they all did. I know that the fittings are now quick disconnects and there is a sticker the calls out the amount of 134a and type of oil used.

When I bought the car in summer the a/c worked well. When I went to use it this spring I found that it had lost enough charge to make the compressor not engage. I bought some 134a and charged it back up and so far its doing alright. However at 85F its not the greatest...better than nothing but not as cold as my other proper 134a system'd cars.

I know MB made 134a 124's after 1993, so I believe proper parts would be available for my 300D. So here is my question, what parts would I all need?

I would imagine:
1) Condenser
2) Dryer/Accumulator
3) Proper 134a seals
4) Expansion valve

But what about lines and evaporator? I think the compressor is OK with 134a...

This is mostly a fact finding mission as I probably wont jump on this until sometime in the fall or even next year.

Thanks!

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