Rack and Pinion Steering The rack gear is connected to an inner tie rod end that is covered by a rubber bellow. The inner tie rod end is connected to the outer tie rod end. These rod ends have the ability to move in any linear direction. Finally, the tie rod end is connected to the wheel spindle.
Rack Bellow, Inner Tie Rod, Outer Tie Rod End
Tie Rod End A worm gear box style of steering system is constructed of two main parts much like the rack and pinion style system. The main part is called a worm gear; the other is a selector shaft gear. The worm gear is connected to the pitman arm and then to a center link and tie rod ends. The opposing end of the center link is supported by an idler arm, which is located on the opposite side of the frame from the steering box.
Steering Box (worm)