The Mercedes-Benz W123 is equipped with a hydraulic self-leveling suspension (SLS) system, where the valve plays a critical role in maintaining correct rear ride height. Over time, these valves often become contaminated, worn, or stuck, leading to improper suspension behavior.
The unit shown here arrived in heavily contaminated condition, with restricted internal movement and failing seals, causing incorrect pressure regulation in the system.
During the refurbishment process, the valve was completely disassembled, thoroughly cleaned, and inspected. All seals were replaced, and internal components were carefully restored to ensure smooth and precise operation.
The result is a fully functional SLS valve capable of properly regulating hydraulic pressure and restoring factory-like suspension performance.
