ML 63 AMG (164.177) V8-6.3L (156.980) (2007)
Ball Joint: Technical Service Bulletins
Steering/Suspension - Ball Joint Service Information
Date: June 2007
Order No.: S-B-33.20/27
Supercedes:
Group: 33
SUBJECT:
MODEL 164, 216, 221, 251
MODEL 211 as of January 2007
Disassembling of Ball Joints with Race
In order to further improve the service lives of ball joints, a new technology has been introduced for the specified joints on the front axle. This is a
metallic race (1, Figure 1 & 2) which is fixed in position between the ball joint and sealing bellows.
This race is firmly pressed onto the ball joint and improves sealing to the rotating sealing bellows together with the small clamping ring (2, Figure
2). The shape of the race alone defines the seating of the bellows without the influence of the conical pull-in. In this way, a basic improvement in
the sealing and service life of the ball joints is achieved.