General Information

The transmission which provides all-wheel drive is a version of that used for front-wheel drive. It is a compact, "full-time" transmission that utilizes a center differential provided with a viscous coupling at the rear of a transfer unit. The viscous coupling serves as a differential-action control.

The center differential utilizes a highly reliable, bevel gear. it not only delivers an equal amount of drive power to both the front and rear, but controls the difference in rotating speed between the front and rear wheels. A viscous coupling and center differential gears are located in the center differential case to connect the front and rear wheel drive shafts. With this arrangement, the transfer system realized a compact construction.

In addition, the viscous-coupling serves as a differential-action control to eliminate a mechanical lock mechanism. The major parts, such as the main case, mainshaft, front differential, the same types as those used with the transmission that provides front-wheel drive (FWD) for standardization purpose.