Turn rack-and-pinion steering to center position, mount steering coupling - AR46.20-P-0600-01P

Turn so that the marking on cap is in alignment with the marking on the control valve housing (arrows).

Shown on model 203 

Fig 1: Locating Marking On Control Valve Housing (Shown On Model 203)

Courtesy of MERCEDES-BENZ USA

Shown on model 220 with 4MATIC 

Fig 2: Locating Marking On Control Valve Housing (Shown On Model 220 With 4MATIC)

Courtesy of MERCEDES-BENZ USA

Shown on model 211 with 4MATIC 

Fig 3: Locating Marking On Control Valve Housing (Shown On Model 211 With 4MATIC)

Courtesy of MERCEDES-BENZ USA