General Description

The Borg-Warner 4472 is a three-piece aluminum case, chain driven, viscous clutch type transfer case. This transfer case allows a system in which all four wheels are engaged all the time or all-wheel drive. The all-wheel drive is automatic and has no external controls.

The viscous clutch in the Borg-Warner 4472 is a torque distribution device that is not serviceable. The internal construction of the viscous clutch consists of alternating plates that are connected to the front and rear outputs of the transfer case. The clutch is filled with a high-viscosity fluid that flows through slots in the plates. The fluid's resistance to shearing causes the plates to transmit torque at the needed ratio to the front or rear wheels. The ratio that torque is transmitted is approximately 35 percent front and 65 percent rear.