Figure 262. Steering rod: 1 — steering rod joint; 2 - protective cover
Shown in the picture 262 Protective cover 2 should be checked along its entire length for cracks or cuts. You need to inspect the underside especially carefully. It is necessary to check the reliability of the cover fastening on the steering mechanism and steering rod. Worn steering rod joints and damaged covers must be replaced.
(Material borrowed from an online resource mercedesman)