Power Steering In Neutral Position
| ITEM | DESCRIPTION |
|---|---|
| 1 | Return fluid control groove |
| 2 | Radial groove |
| 3 | Feed fluid control groove |
| 4 | Radial groove |
| 5 | Axial groove |
| 6 | Feed fluid control edge |
| 7 | Feed fluid radial groove |
| 8 | Return fluid control edge |
| 9 | Return fluid chamber |
| 10 | Cut-off valve |
| 11 | Radial groove |
| 12 | Servotronic transducer valve |
| 13 | Feed fluid radial groove |
| 14 | Radial groove |
| 15 | Orifice |
| 16 | Balls |
| 17 | Compression spring |
| 18 | Torsion bar |
| 19 | Power steering fluid reservoir |
| 20 | Valve rotor |
| 21 | Reaction piston |
| 22 | Reaction chamber |
| 23 | Centering piece |
| 24 | Pressure relief/flow limiting valve |
| 25 | Power steering pump |
| 26 | Tie-rod |
| 27 | Pinion |
| 28 | Valve sleeve |
| 29 | Steering gear rack |
| 30 | Steering gear housing |
| 31 | Power assist cylinder - right |
| 32 | Piston |
| 33 | Power assist cylinder - left |
When the engine is started, the power steering pump draws fluid from the fluid reservoir down the low pressure suction line. The fluid passes through the pump and is delivered at pressure, via a hose, to the steering gear valve unit.
The pressurized fluid flows through a connecting bore in the valve and, via the feed fluid radial groove and the transverse bores in the valve sleeve, passes to the feed fluid control groove of the valve rotor.
In the neutral (straight ahead) position, the fluid passes over the open feed fluid control edges to all valve sleeve axial grooves. The fluid then passes through return fluid control edges and the return fluid grooves of the valve rotor, back to the reservoir via the fluid cooler (if fitted).
Simultaneously, the radial grooves of the valve and their associated pipes provide a connection to the left and right power assist cylinders.