By Fred Gagnon


Masses of vehicles are loaded with a four-wheel or all-wheel drive system. These drive systems utilize a number of mechanical components to help run correctly. One single part is the transfer case. A transfer case, often known as a transfer gearbox or transfer box, is a casing device that works together with the transmission in four-wheel drive and all-wheel drive autos.

The transfer case links to the transmission and front and rear car axles via drive shafts. Drive shafts are physical parts that permit rotation and deliver torque, or the force of momentum, to attached elements. The transfer case takes power out of the transmission and sends out that power to the front and rear axles using the shafts. It will help enable all 4 wheels to get torque concurrently.

A transfer case is typically gear driven or chain driven. Chain-driven transfer cases make use of a chain to safely move one axle, but can also move the 2 axles. Chain-driven transfer cases make use of specific roller chains, or chains built from pin links and chain links, to handle the front axle and the rear axle, hence permitting the case to move either both axles or one separately. Gear-driven transfer cases employ gear sets to transfer power to either the front drive shaft, or both front and rear drive shafts. Even so, newest transfer cases are chain driven.

Transfer cases commonly contain one or more set of low-range gears. These gears are powered by a shifter or switch, and are made to maximize torque, or the force of motion, to the axles while scaling down the car. Low-range gears are normally utilized for such functions as load-pulling and rock crawling, or off-road running on tough or higher terrain.

Driver operators can manipulate the operation of the transfer case by using a gear stick lever. This lever makes it possible for the driver to place the transfer case into two-wheel drive or four-wheel drive. Various other automobiles make use of an electronic switch as opposed to a shifter.




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