I just got diagnosed by my local MB dealer that my AC evaporator (or expansion valve) has a leak. The system did not hold pressure, and their "sniffer" gave a positive result under the dash and from the air ducts. There was also some oiliness around the heater box. They gave me an estimate of 4933$ for the work and parts, so I am now gathering a parts list and doing some self-studying on this subject to do it myself once this year's driving season is over.
The local MB dealer did a good job diagnosing the fault, I was quite happy about it. They gave me the following list of parts to replace:
A126830038464 expansion valve
A0139974245 seal ring x 2
A1268300383 receiver drier/accumulator
A0048206810 pressure switch
A0139974045 seal ring x 2
My questions are:
- Has anyone done this to 126-chassis? Any tips, HOW-TO's etc? I have the factory workshop manual.
- What parts to replace "while you're in there" Vacuum pods? Anything else? I think all the flaps work as they are intended to, but should I replace the pods anyway?