I've decided to gen up on aircon in general and specifically the system in my 1995 E300 Diesel. I have the Haynes Techbook which is great for me as a newbie to A/C but I quickly have learnt there are different types of systems and combinations of components across manufacturers.

Can anyone tell me what basic system type is in my W124, I think it could be an Expansion Valve System with a cycling compressor (electro mag clutch?) and a combined accumulator /drier compressor cut out switch unit - am i right? if not could you tell me what basic components I have. This will allow me to optimise what I am reading around the system in my car.

many thanks in advance
Keith

The 124, at least the US models, are an expansion valve and cycling switch system. The regulation of the temperature is accomplished by varying the amount of coolant allowed through the heater core along with regulation of the fresh air flaps.

An accumulator system is predominantly used in GM cars, or Euro cars with a GM a/c system.

There are many, MANY posts on this forum regarding this system. Searching on a topic such as 124 a/c will probably result in more threads than you care to read.

Hopes this helps,

thanks Larry
I wanted to get a high level view to know what to take further interest in. Will take your advice and drill down within earlier posts.

Keith