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Rack-and-pinion steering straight-ahead driving function - GF46.25-P-3100P

MODEL 171.4, 203 except CODE (213) Speed-sensitive power steering up to Model Year 8 

MODEL 209, 211 except CODE (213) Speed-sensitive power steering 

Fig 1: Rack-And-Pinion Steering Straight-Ahead Driving Function Diagram
G07283499Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Shown on model 203 

The rotary valve is composed of the rotary slide (4k) with 6 control grooves with ground edges on its jacket surface, and the pilot bushing (4i) also with 6 control grooves corresponding to those on the rotary slide (4k).

One end of the torsion bar (4a) is pinned to the rotary slide (4k), and the other end to the drive pinion (4b). It holds the rotary slide (4k) in the neutral position when the steering wheel is not turned.

Rack-and-pinion steering gear, location/task/design/function Models 171.4, 203, 209 GF46.20-P-1000P
  Model 211 GF46.20-P-1000T 
Rack-and-pinion steering play compensator, location/task/function Model 171.4, 203, 209 GF46.20-P-1100P
  Model 211 GF46.20-P-1100T 
Rack-and-pinion steering damper, location/task/function Model 171.4, 203, 209 GF46.20-P-1200P
  Model 211 GF46.20-P-1200T 
Power steering pump, location/task/design/function Model 171.4 GF46.30-P-2100SK
  Model 203 GF46.30-P-2100P
  Model 209 GF46.30-P-2100Q
  Model 211 GF46.30-P-2100T