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Home >> Mercedes Benz >> 2008 >> C350 >> Repair and Diagnosis >> Steering >> Power Steering >> Steering -- C63/C350 (204) >> Basic Knowledge >> Rack-and-pinion steering, function when driving straight-ahead - GF46.25-P-3100CW

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

MODEL 204.0/2 up to Model Year 8 

Shown without code (213) Speed-sensitive power steering 

Fig 1: Identifying Rack-And-Pinion Steering Function Chart - Driving Straight-Ahead
G07527815Courtesy of MERCEDES-BENZ USA

When driving straight ahead (steering wheel in center position) the rotary valve of the rotary slide shift valve is in the neutral position. The control grooves of the rotary valve and the pilot bushing are interdependent to the extent that the oil flow, as supplied by the power steering pump, is routed straight back over the return flow to the reservoir. The working cylinders are therefore unpressurized.

IMPORTANT The stabilizer bar is pinned on one side with the rotary valve and on the other side with the drive Pinion.

Steering gear of rack-and-pinion steering, component description Vehicles without code (213) Speed-sensitive power steering GF46.20-P-5137CW 
  Vehicles with code (213) Speed-sensitive power steering GF46.20-P-5137CWA 
Power steering pump, component description   GF46.30-P-5136CW