The components of a Front End Suspension system are ball joints, tie rod ends, rack ends, idler arm and pitman arm. Not all vehicle have all of the above components, it depends on how the manufacture designed the vehicle.
What do they do?
Upper and/or Lower Ball Joints are a pivot point between the tyres and the suspension. They connect the control arm to the steering knuckle. Ball joints also support weight. On some vehicles, the ball joints may be used to make wheel alignment settings. Inner and/or Outer Tie Rod Ends transmits force from the steering centre link or the rack end to the steering knuckle. This causes the wheel to turn. The Outer Tie Rod End connects with an adjusting sleeve which allows the length to be adjustable. This is used to set a vehicle’s alignment angle.
Rack Ends transfer the force, which is transformed from the circular motion of the pinion into the horizontal linear motion of the rack, to the left and right wheels.
Ends transfer the force, which is transformed from the circular motion of the pinion into the horizontal linear motion of the rack, to the left and right wheels.
Pitman Arm attaches to the steering gear shaft and acts as a lever, converting torque from the steering gear to the mechanical force for movement of the steering linkage.
Idler Arm assists the pitman arm by supporting the steering linkage as it moves in the direction controlled by the steering gear.
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