Speed-sensitive power steering, function with vehicle stationary - GF46.50-P-2500A

MODEL 171.4, 203, 209, 211 with CODE (213a) Speed-sensitive power steering

MODELS 215, 220, 230

Illustration shows rotary valve and control bush housing for models 215 and 220, left wheel lock

Fig 1: Identifying 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