This from the Ponton group:
English and german language technical documentation for different Mercedes types
From: Detlef
Date: Fri, 24 Jan 2020 11:57:48 PST
Hello group,
a german Mercedes club provides a huge library of Mercedes documentation for types between 1950 to 1990. All are provided as Flipbooks, not downloadable but screen printable. Good enough for working in the garage. Most of them are in german language, but some are in english or multi lingual. See below;
Ponton, unfortunately all in german language only
https://mercedesclubs.de/anleitungen/79-pontonW100
https://vdhflipbooks.de/books/WHB/Schulung-Mercedes600/W100 – W116 Service Information
https://vdhflipbooks.de/books/SI/ServiceInformationBand2englisch/M117 Engine
https://vdhflipbooks.de/books/KAT/MotorenkatalogM117/Continuous Injection systems 1976-1979
https://vdhflipbooks.de/books/WHB/Schulung-MBCIS1976-1979/Registration year 1975 Passenger Cars
https://vdhflipbooks.de/books/EFS/EFS-PKW-ModellYear1973/W107,108,109, 113,114,115,116,123 repair shop manual
https://vdhflipbooks.de/books/WHB/WAB-Modelle1972-80-E/W112 spare parts
https://vdhflipbooks.de/books/KAT/Motorenkatalog-300SE/W108-W113 Zenith carburetors
https://vdhflipbooks.de/books/EFS/EFS-PKW-ENG-zentihvergaser/W111 280 SE 3.5 electric wiring
https://vdhflipbooks.de/books/SchP/Mercedes-Benz-280-SE-3,5%20Coup%C3%A8-Convertible/#1 Chiltons repair and tune up guide 1960-1970 models
https://vdhflipbooks.de/books/WHB/Chilton%60s%20Repair%20&Tune-Up-Guide/#1Electric troubleshooting manual 1980
https://vdhflipbooks.de/books/EFS/EFS-PKW-ModelYear1980-Trouble/Service information 1980 until... W107, 123, 124, 129, 201
https://vdhflipbooks.de/books/SI/ServiceInformationBand3englisch/#1Preliminary Passenger Car- R129
https://vdhflipbooks.de/books/EFS/Passenger-Car-Model-129/#4/z