BRACKET ASSEM. 9K3141 - Caterpillar

Torque is a twisting effort applied to an object that tends to make the object turn about the axis of rotation. The amount of torque is equal to the magnitude of the applied force, multiplied by the distance between the object's axis of rotation and the point where the force is applied. Just as a force that is applied to an object tends to change the linear rate of motion of the object, a torque that is applied to an object tends to change the object's rate of rotational motion.The amount of torque that is available from a source of power is proportional to the distance from the center at which torque is applied. In Illustration 2 the lever has more torque as the fulcrum gets closer to the object of power application (right diagram). But the lever must also be rotated farther to get this torque.Mechanical Power Train
Illustration 3 g01084045
The power trains that are used in most of today's construction machinery can be classified into three basic types:
Mechanical
Hydrostatic
ElectricIn a mechanical power train, power from the engine is transferred through a coupling (clutch or torque converter) to the transmission. From the transmission power is transferred to the differential, final drives, and to the wheels or tracks.The major components of a typical mechanical power train are listed below:Engine - Provides the power to operate the vehicle and the coupling device.Coupling - Connects the engine power to the rest of the power train. Flywheel clutch couplings can disconnect the engine power from the rest of the power train. This allows the engine to run while the machine is not moving. Torque converters and torque dividers always provide a fluid coupling in order to connect the engine to the remainder of the power train. The connection can be direct if the machine is equipped with a lockup clutch.Transmission - Controls output speed, direction, and torque of the power that is delivered to the remainder of the power train.Differential - Transmits power