570 STEERING SYSTEM The construction and working of steering system is as follows : Steering system used in TATANANO is of Mechanical Rack and Pinion type. The Rack and Pinion (RPS) assembly (6) is attached to the intermediate shaft (4) through lower universal joint (5). Tie rod assembly (7) is connected to both ends of RPS assembly. When the steering wheel (1) is turned, the motion is transmi tted from steering upper column (2), intermediate shaft (4) and then to the pinion of RPS assembly through upper and lower universal joints (3 and 5) Since the pinion teeth are in mesh with the rack teeth, the motion is further transferred to the rack and converted to linear motion. The linear motion is then transferred through the tie rods to the steering knuckle through outer ball joints which finally turns the wheel. Rack-and-pinion gear set performs following two important functions : (a) It converts the rotational motion of the steering wheel into the linear motion needed to turn the wheels/tyres. (b) It provides a gear reduction, making it easier to turn the wheels/tyres.
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