No way to fix or rebuild the dampers. must buy new. I recommend doing both, they all fail over time and if one is gone the other is surely to follow soon. it is an easy job, just dirty, you will likely be wrist deep in hydrolic fluid when you are done, but it is an easy job.

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Christopher Henkel
1990 190E 2.6 - Arctic white SOLD
1986 190E-16v - Blauswartze
1993 300CE - SOLD
2003 W208 CLK 320 Cabriolet - Magma Red