What is obvious is that your critical reading skills are lacking...
I need my cell phone to call AAA, USAA, 911
it costs me $8 a month.
I use my computer at home to access the internet. By not accessing the internet with my cell phone it is pretty much hack proof.
I open up my paper FSM MB manuals to search for some answers.

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1980 240d ,

chain elongation, cam marks reference:
http://www.peachparts.com/shopforum/showthread.php?threadid=10414

http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html

evap fin cleaning:

http://www.peachparts.com/shopforum/diesel-discussion/156207-photo-step-step-post-showing-w123-evaporator-removal-1983-240d-1982-300td.html?highlight=evaporator

A/C thread

http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html