That 17mm wrench is the correct tool for getting of spark plug wires on all
M112 and M113 engines. It gets behind the plug connector and presses it off
when you lever against valve cover. MB tool # 110 589 01 01 00.
Not too expensive, last one I bought was $40 ish.......
Dr.D

__________________
Dr.Diesel -
Shop Foreman
Master Guild Mercedes-Benz Technician.

Think the dealer is expensive? Do you know how much it costs to train a dealer tech? Or buy the required MB special tools to have on hand?