New member to forum, was really happy to see such a complete write up on W123 SLS. While the SLS is functionally similar in W124, are the leveling valves (and repair) the same? My '87 300TD SLS jacked the rear end up as for a heavy load, even though there was no load, after only 432K miles. I read your (Biodiesel300TD) troubleshooting guide, but didn't find a "rear end jacked up and rides like shocks are bad" write up. D you have a guess as to what my problem might be? Do you have a kit for W124 valve (if that's the problem)? Do you offer rebuild service? Thanks for your help, David E

Unfortunately the 124 valves are not rebuildable. They aren't designed to come apart like the 123 valves are. You can get to some of the o-rings but not all of them. If the rear is riding high all the time I'd look at the connecting rod between the valve lever arm and the sway bar. It may have become disconnected and so the lever arm dropped down, making the valve think the rear is sitting low so it's compensating. If this is the case your car is sitting at its max height and probably riding bad because of it.

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Re: jacked up rear on W124 w/ SLS. You were exactly right about the connecting arm coming loose. I feel lazy not looking underneath before posting, but I was still full of turkey. The ball and swivel attachment at the valve has corroded and I won't be able to reattach, but the dealer ordered a new connecting rod for only $41. I don't think my zip tie is a long term solution. Such is the cost of driving a luxury vehicle. Thanks again for your help, David E

At least you knew what to look for when you climbed underneath. Glad I could help, and it was an easy fix! Happy motoring.

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