I came across this today. It's similar to the Charm.li series, but you can never have too much WIS!
Rick_In_Tas
@Rick_In_Tas are you going to share any details or do we need to guess what sites you've been visiting 😬
another...
Mercedes Benz Workshop Service and Repair Manuals
Workshop Repair and Service Manuals mercedesbenz All Models Free Online
workshop-manuals.com
Put it down to old age, chaps! Sorry
Free Service Manuals for Mercedes Benz vehicles ~ LEMON Manuals
Repair/service/workshop manuals for many Mercedes Benz vehicles: electrical diagrams, bolt torques, labor times, and more.
lemon-manuals.la
sure looks like charm to me 
Free Service Manuals for Mercedes Benz vehicles | Operation CHARM
Detailed repair/service/workshop manuals for many Mercedes Benz vehicles, including electrical diagrams, recommended bolt torques, and estimated labor times.
charm.li
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