The steering system mechanism permits the driver to guide the truck along the rod and
turn right or left as desired. The steering mechanism includes the steering wheel which the
driver regulates the steering gear which converts the rotary motion of the wheel into
straight line motion.
Steering Column
The steering wheel rotates the steering column and the steering box is fitted to end
of this column. Therefore when the steering wheel is rotated the rotary motion is
transmitted through upper column shaft to various other intermediate shaft and
finally to upper input shaft.
The main body parts included in the Steering Column is shown in the below image:Figure 1.
Figure 2.
The body parts included in the Pitman Arm Steering are explained below:Figure 3.
Tierod
The tie rod transmits force from the steering center link to the
steering knuckle and this action will cause the wheel to turn.
Wormshaft
It is a gear consisting of a shaft with screw thread that meshes with a
toothed wheel. Worm shaft and worm gear together constitute a worm
drive.
Pitman Arm
It is one of the main steering component. One end of the pitman arm is
attached to the steering box, where gears are placed that convert the
steering wheel's rotation into lateral movement. The other end is
connected to the track rod, which invokes the idler arm to amplify the
horizontal displacement. The track rod links to tie rods on either side
of the vehicle, which make the wheels to turn.
Drag Link
Drag Link connects the pitman arm to the steering arm and in turn to the
tie rod which invokes the wheels to turn.Figure 4.
