One of the fellows attempted to use a non-specific compressor for the W107 and he failed miserably. The design of that vehicle seems to mandate the proper tool for that job and the typical M/B spring compressor is not adequate.

There is a thread about his escapades here, somewhere.

Edited:

I found it:

http://www.peachparts.com/shopforum/showthread.php?t=123959&highlight=W107+spring


The standard spring compressor for M/B would not work for him.