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The steering linkage is made of interconnected parts which move every
time the steering wheel is turned. The rotating movement of the
steering column activates mechanisms inside the steering box. Tie rod
ends, which join the key parts, pass on the steering wheel's motion
no matter what the angle of the linkage or the vibration from the
road. In a pitman arm steering setup, the movement inside the
steering box causes the Pitman shaft and arm to rotate, applying
leverage to the relay rod, which passes the movement to the tie rods.
The steering arms pick up the motion from the tie rods and cause the
steering knuckles to turn the wheels. The steering linkages need
regular maintenance for safe operation, such as lubrication and
inspection. Faulty steering links can cause tire wear at the least,
and complete loss of control of the vehicle at worst. "Popping"
noises (when turning the wheels) usually indicate worn out steering
linkages.
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