If the front end of your W107 SL or SLC convertible or coupe wanders on the road or thunks when you go over railroad tracks, you most likely need to install a new front subframe bushing kit. I see this condition even on real low mileage pristine cars. As seen on Cherry. Click here to watch full videos series on an R107 rolling restoration. Note: also works on all W114 and W115 chassis. See below.
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It is not a function of mileage, but rather of age. From my experience, all rubber suspension parts seem to deteriorate when they reach 15 to 18 years old. You can inspect your mounts without jacking the car or removing the tires. It is not a difficult job to replace the subframe mounts. Included here is a complete rubber mounting kit along with installation instructions. My guide will take you step-by-step through the process of doing it yourself. You will need to raise the car up in the air and remove the front wheels. You lower one side at a time and do one side at a time. You can be done in a long afternoon and will most certainly be pleased with the results! For the do-it-yourselfer, I consider this one of the best (for the money) handling improvements you can make on your 350SL 450SL 380SL and 560SL.
Here I am pointing to the two bushing locations on one side of the front end. (two on each side of the subframe)
Even though the bushing may look " ok" they have often lost their firmness due to age even on low mileage cars.
After new ones were installed.
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How to view the PDF digital instructions:
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Related Products:
R107 450SL 380SL 500SL 560SL Front End Stabilization Kit
These are the rubber parts that often do not get replaced when working on an R107 front end to fix loose steering, squeaking noises, and erratic handling. These fit all 107s from 1972 to 1989.
1968 to 1976 W114 W115 Front Subframe Mount Kit w/ Instructions
If the front end of your W 114 or W115 sedan or coupe wanders on the road or thunks when you go over railroad tracks, you most likely need to install a new front subframe bushing kit. I see this condition even on real low mileage pristine cars.