Operation Principle
When Steering Wheel is in the Neutral Position
Because the hydraulic routes open at the power steering pump, right side of gear housing, left side of gear housing, and reservoir tank, the hydraulic pressure applied to the right side and left side of the gear housing is equal and no steering assist force is generated.
When Steering Wheel is Rotated to the Right
The hydraulic routes open from power steering pump to right side of gear housing and from left side of gear housing to reservoir tank, providing left directional assist force to the rack.
When Steering Wheel is Rotated to the Left
The hydraulic routes open from power steering pump to left side of the gear housing and from the right side of the gear housing to reservoir tank, providing right directional assist force to the rack.