A transfer case is one of parts that your vehicle utilizes to activate the traction to the rear wheels or traction 4×4. When it disconnects the function of the transfer case only works two wheels since this undertakes to transfer the engine power to the rear wheels.
The transfer case is the part to your vehicle that it undertakes to transmit the transmission power to the front and rear axles by means of drive shafts. The transfer case undertakes to synchronize the front and rear wheels rotation doing to turn to the same speed, this is possible thanks to this part so important distributes the power that come from the engine through of the axles and synchronizes with the front and rear wheels.