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Steering and Related Components

The "steering" function is carried out by all the articulated components that allow for control of the trajectory of a vehicle.

Side Slip Angle and Alignment of the Front Axle

ROLE: to measure the tendency of a wheel to deviate from the trajectory of the opposite wheel, it indicates how much the tire is being dragged sideways. This can be done on a test bench, the side slip tester.
Risks if non-compliant:
  • The vehicle may drift to the left or right and the driver may experience poor road handling, especially when braking.
  • It may cause premature wearing of the tires and of other mechanical components (shock absorber, bearings, etc..).
  • There may be excessive play of the ball joints.

Steering Wheel and Column

ROLE: these components allow the vehicle to be steered by simultaneously controlling the wheel direction.
The inspector will check your steering wheel for loose connections or excessive play. No excessive play, stiffness or resistance must be observed.
Risks if non-compliant:
  • Inconsistent or inaccurate steering which can lead to a loss of control if there is excessive play or stiffness.
  • There is also a risk of loss of control if they are not securely and correctly fitted.

Steering Transmission System

ROLE: to transmit the movement of the steering wheel to the wheels.
Risks if non-compliant:
  • Inconsistent or inaccurate steering which can lead to a loss of control if there is excessive play or stiffness.
  • There is also a risk of loss of control if it is not securely and correctly fitted.

Power Steering Fluid

ROLE: to transmit power from the pump to the rack. It is the hydraulic fluid used in the steering system to create a hydraulic link between the steering wheel and the front wheels.
Risks if non-compliant:
  • There may be insufficient power assistance.
  • A heightened risk of corrosion or accelerated wear of components.

Power Steering System

ROLE: it uses intermediate electric or hydraulic devices to reduce the effort necessary to maneuver the steering wheel, allowing for easier and better control of the vehicle, especially at lower speeds.
Risks if non-compliant:
  • There may be inconsistent, inaccurate or heavy steering if it is damaged, which could even lead to loss of control.