is there anything i should know before replacing compressor,dryer,& expansion valve? - Page 4 - PeachParts Mercedes-Benz Forum

Diesel Giant · #46 06-22-2005, 08:00 PM

Here is how to do it.

http://dieselgiant.com/mercedes_diesel_maintenance_tips.htm

Scroll down to the bottom of the page.

Hit Man X · #47 06-22-2005, 08:36 PM

Quote:

Originally Posted by leathermang

On many of these cars that job is listed in the flat rate manual at 17 hours.. yes... not a typo... and several threads are posted by people who have replaced them... My condolences go out to those people every time I think about that job...
As I get older and fatter ... I have a problem committing to working under the dash on a car that long....
If I was sure that my evaporator was toast... I would construct one in the trunk of the car... plenty of room... just like about a 1957 Buick had... and for the historical record... the company which made those was located within a few miles of where you live.

Your best bet.. take ALL the time and EFFORT required to make sure you have an evaporator problem before making up your mind..
I think someone lately put dye into their system, saw it come out the drain tube...and assumed the evaporator had a hole... it turned out to be the expansion valve connection to the evaporator...

Well looks like we'll just keep it in there. hahaha I figured since it was decently priced I could replace it if the work was a few hours only... guess I was wrong!

I must flush the Evap Core as I had a total system failure, is there a better way versus another to flush it properly?

leathermang · #48 06-22-2005, 08:54 PM

The methods mentioned above... a funnel to introduce some solvent and then blowing it out are the same my Guru ... Tray at Carlisle Auto Air in San Antonio said they use..
I think the main thing is to keep flushing until what you get out is completely clean....
I like the use of mineral spirits and then the regular commercial flush...
I would not switch to the commercial flush until your mineral spirit fills come out completely clean...
Given what has been said... if you can introduce it and leave it a while I think that is good also... don't be in a rush on any part of the procedure for flushing the evaporator....

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