For many years I have tried to buy the special tool for a job and do it myself if there was any chance the tool would ever be used again. As a result I have both the type shown in your attachment (usual internal compressor ) and an external used for strut type arrangements. I am just guessing but it may be that the one shown has the tips too long to fit between the coils on a sagging spring MB. When I looked under my 300td that is the impression I got. you have to be able to get both through the openings and that may be why the MB specified one is such a flat design.

If you get that and it does work be sure and post your success... I would love to use these tools for that instead of renting or making the mb type.

If you rent the MB type how about contacting me while you have it and lets measure it so I can replicate it in my shop.

On the other hand, it would seem, and I have mentioned this before, to thunderous silence, that we could coordinate between the members of the forum to utilize the rented compressor and considerably reduce the rental cost per person. Good luck, Greg