Yes, clearly he did not have the room shown in the FSM when they did not have the crank so close to the seal.... but he sure had to do a lot of heavy lifting to manage this ...since he said ' rolling' I am hopeful everything went in perfectly... or maybe he is stronger than you and I are ? LOL

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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