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Learning Objective: Identify the major components of a steering system. Explain the operating principles of steering systems. Describe the differences between the linkage and rack and pinion type steering. Describe the operation of power steering. Describe service and repair procedures for manual and rack and pinion type steering mechanisms. Explain the service procedures for servicing power steering belts, hoses, and fluid. The steering system allows the operator to guide the vehicle along the road and turn left or right as desired. The system includes the steering wheel, which the operator controls, the steering mechanism, which changes the rotary motion of the steering wheel into straight-line motion, and the steering linkage. Most systems were manual until a few years ago. Then power steering became popular. It is now installed in most vehicles manufactured today. The steering system must perform several important functions, pitman arm normally uses a ball-and-socket joint to which are as follows: connect to the center link. Provide precise control of front-wheel direction. Center Link Transmit road feel (slight steering wheel pull caused by road surface) to the operator's hands. Absorb most of the shock going to the steering wheel, as the tires hit bumps and holes in the road. The parallelogram steering linkage (fig. 8-19) uses a center link, otherwise known as an intermediate rod, track rod, or relay rod, which is simply a steel bar that connects the steering arms (pitman arm, tie-rod ends, and idler arm) together. The turning action of the steering mechanism is transmitted to the center link through the pitman arm. Allow for suspension action. Idler Arm |
 
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