Speed-sensitive power steering, function with vehicle stationary - GF46.50-P-2500A
MODEL 171.4, 203 with CODE (213) Speed-sensitive power steering up to Model Year 8
MODEL 209, 211 with CODE (213) Speed-sensitive power steering
MODEL 215, 220
MODEL 230 up to Model Year 8
Illustration shows rotary valve and control bush housing for models 215 and 220, left wheel lock
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.
| 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 | |
| Model 220 except Code (487a) Active Body Control (ABC) | GF46.30-P-2100B | |
| Model 230 except Code (487a) Active Body Control (ABC) | GF46.30-P-2100R | |
| Tandem pump, location/task/design/function | Model 215 Models 220, 230 with Code (487a) Active Body Control (ABC) |
GF46.30-P-3300A |
| Rack-and-pinion steering gear, location/task/design/function | Model 171.4, 203, 209 | GF46.20-P-1000PA |
| Model 211 | GF46.20-P-1000TA | |
| Models 215, 220, 230 | GF46.20-P-1000B | |
| SPS solenoid valve, location/task/design/function | GF46.50-P-5000B | |
| Rack-and-pinion steering play compensator, location/task/function | Model 171.4, 203, 209 | GF46.20-P-1100P |
| Model 211 | GF46.20-P-1100T | |
| Models 215, 220, 230 | GF46.20-P-1100B | |
| Rack-and-pinion steering damper, location/task/function | Model 171.4, 203, 209 | GF46.20-P-1200P |
| Model 211 | GF46.20-P-1200T | |
| Models 215, 220, 230 | GF46.20-P-1200B |