GF46.50-P-2500A Speed-Sensitive Power Steering, Function With Vehicle Stationary

GF46.50-P-2500A Speed-sensitive power steering, function with vehicle stationary
- with CODE (213) Speed-sensitive power steering [models 171.4, 203, 209, 211]

Component Identification:

Vehicle speed v = 0 km/h
The SPS solenoid valve (Y10) receives maximum current which closes it against the force of the integrated compression spring. The pressure ratios in the reaction chambers are identical, since the pressure oil supply is stopped. No force is exerted on the reaction balls (4) and no additional moment is produced on the v-shaped surfaces of the rotary valve (12).

The steering turns easily because the steering moment which the driver must apply to overcome the force of the torsion bar (10) is very low. The oil passes virtually unpressurized via the constant constriction orifice (8) to the supply reservoir of the power steering pump.