Most of the Mercedes cars I have messed with did not require a rear spring compressor... I have not messed with your model... I jacked up the car and installed jack stands... then I disconnected the sway bar and put the floor jack under the spring I was removing first.. Removed the nuts from the top of the shock and lowered the spring perch until the spring had no tension...

You might ask others if this is possible with your car... I have used this method on the 116, 123, and 126 models.......... Jim

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James A. Harris