Mercedes Benz C 43 AMG Technical Service Bulletin # P-42_30-118 Date: 111219

Mercedes Benz C 43 AMG Technical Service Bulletin # P-42_30-118 Date: 111219

Brakes/Traction Control - Handling Multipole Rings

Date: December 19, 2011

Order No.: P-B-42.30/118

Group: 42

SUBJECT: Models 129, 140, 170, 171, 172, 202, 203, 204, 207, 208, 209, 210, 211, 212, 215, 216, 218, 219, 220, 221, 230, 231

Handling Multipole Rings

When repairing and maintaining operations on the rear axle, ensure that there is no mechanical and magnetic damage to the multipole rings on the

external ball joint of the drive shafts, and that all work conducted is performed in accordance with the WIS documentation specifications.

To avoid magnetic damage to the multipole rings everyone who comes into direct contact with the components must familiarize themselves with the

following specifications for handling multipole rings. This applies to the following components:

^ Drive shaft

^ Steering knuckle/wheel bearing

^ Spring control arm

^ Transverse control arm

^ Cross strut

^ Torque strut

^ Thrust arm

^ Camber strut

^ Shock absorber

^ Spring

Note the following precautions when handling these magnetic multipole rings:

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^ Do not bring into contact with external magnetic fields (Figure 1) (a).

^ Avoid damaging rubber-lined encoder track (Figure 1) (b).

^ Avoid soiling parts (Figure 1) (c)

^ Do not bring into contact with metal shavings (Figure 1) (d).

Installation instructions for multipole rings are in WIS document AR42.30-P-0715A Remove/Install Pulse Ring.