Mercedes R107 & W126 Guide Rod Support Rubber Bushing Replacement Guide

While replacing the front suspension rod assembly you may encounter worn rubber bushings in the aluminum bracket. Here is a video that shows how to replace them. Video Chapters [00:00:01] Introduction: Replacing the front rod assembly bushings. [00:00:28] Component Overview: Inspecting the aluminum front bracket assembly. [00:00:46] Extraction Methods: Using a bench press vs. a driver and hammer. [00:01:09] Identification: Noticing the different diameters of the front and rear bushings. [00:01:19] Preparation: Why you must use lithium grease instead of petroleum-based lubricants. [00:01:46] The Pressing Process: Using a threaded rod and brass disc for installation. [00:03:07] Completion: Finalizing the bushing installation in the bracket. [00:03:39] Comparison: Seeing the severe play in a worn-out original bushing. [00:03:57] Final Inspection: A look at the fully finished and installed assembly. [00:04:30] Safety Reminder: Using jack stands and planning for a wheel alignment. Video Summary Ralf demonstrates how to tackle the often-difficult task of driving old rubber bushings out of the aluminum brake support brackets and pressing new ones in. He notes that the ease of this job depends heavily on the age and prior maintenance of the vehicle. Key Technical Highlights: Removal Techniques: For those without a professional bench press, Ralf suggests supporting the aluminum arm with blocks of wood and driving the bushings out with a manual driver and hammer. Bushing Specs: It is important to note that the front and rear bushings in the bracket are of different diameters. They are not interchangeable, and you must ensure the correct bushing is matched to the correct side of the bracket. Lubrication Warning: Ralf stresses that you should never use petroleum-based grease for this job, as it will cause the new rubber to deteriorate immediately. Instead, use a lithium-based grease or a similar rubber-safe lubricant. Installation Hack: When standard methods failed, Ralf switched to using a threaded rod and a solid brass disc to act as a custom press, allowing him to pull the new bushings into the bracket smoothly. He also mentions the need for a spacer to ensure the rubber protrudes correctly from the other side of the bracket. The "Why": A worn bushing can have nearly a quarter-inch of play, which severely affects steering precision and braking stability. After completing this work, Ralf highly recommends getting a professional wheel alignment, as the suspension geometry has likely shifted. Video URL: https://youtu.be/LqCiptWyjSY

Added 26 Jul 2026