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post #1 of 5 (permalink) Old 06-26-2009, 03:39 AM Thread Starter
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Air Con

Trailing round forums to see if any help
Has anyone any tips on removing the dashboard on my 1992 500SEL
Evaporator behind dash leaking.My fault as called to phone and left bottle connected which fell over filling system with a litre of R134a Opps!
Does wheel and airbag have to come off. ? Thanks.
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post #2 of 5 (permalink) Old 06-26-2009, 04:43 AM
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To change the evap, the entire dash comes out including console, it is not for the inexperienced. There are lots of wires, hoses and things. It is usually a $4000 job at a dealer. The link discusses it on a coupe
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post #3 of 5 (permalink) Old 06-26-2009, 09:25 AM
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This question might be better phrased, "How do I remove the car from the evaporator?" Legend has it that the first piece they put on the assembly line was the evaporator, and they then proceed to build the car around it.
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post #4 of 5 (permalink) Old 06-26-2009, 01:42 PM
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My W124 was the same way. Replacing the evaporator basically required the removal of everything in the interior forward of the B pillar except the seats. If I recall, the flat rate (remember this is a simpler 124) was 20 hours or some such.

The advice you are receiving is accurate; this is not a job for an amateur--even a talented one with time on his/her hands. You may find it more expensive to repair than the car is worth. I found an indie shop to replace mine, which turned out to be less than half what the dealership quoted, but it was still $2k or something like that including the new part.

Good luck.

"Don't pick a fight with an old man. If he is too old to fight, he'll just kill you."--John Steinbeck
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post #5 of 5 (permalink) Old 06-26-2009, 05:03 PM
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I had the dash out of my W124 a few years ago. airbags, steering wheel, instrument cluster, everything had to come out. I needed to pull the dash to replace the vacuum pods, but the evaporator was right there and could have easily been pulled as well.

Though it was a lot of work, as long as you proceed carefully with the appropriate service manual pages at hand, it shouldn't be too bad. I started about 6am and was done about 3pm.

Regarding the airbags: they are really safe. The procedure in the service manual covered that nicely. I did need a special tool to remove the airbag from the steering wheel.

My advice would be to proceed slowly and carefully, and do the job when you are not rushed and have no deadlines ( and can do without the car for a week if necessary).

Dave Barnhart
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