If you've got tools, you can do the work. You don't have to be an expert MB mechanic to work on one; I'd never worked on an MB before I did my chain and it came out fine.

Check out the DIY section at the top of the pages under "Resources". I think the timing chain switch is for an M117, but it works for the M116 as well.

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A.S.E Tech A1,A6,A7,A8 & MVAC 609 + EPA 608

Unless stated otherwise, any question I ask is about my greymarket 1985 380SEL.