Transfer Case - MPT3015 (One Speed)
DESCRIPTION
This is an electronically controlled active full-time transfer case. A wet clutch in the transfer case is used to control torque transfer to the front and rear axles. The Drivetrain Control Module (DTCM) is integrated with shift motor mounted on the transfer case.
OPERATION
The DTCM controls the front to rear torque distribution by application of a multi disc clutch assembly. Increasing the amount of force applied to the clutch results in a greater amount of torque supplied to the front axle. The input shaft is splined to the transmission output shaft. The front output shaft is operated by a drive chain that connects the shaft to a drive sprocket on the main shaft. Depending on traction conditions, the DTCM will modulate the electromagnetic clutch assembly to vary the amount of torque applied to the front axle. Torque is transmitted through the input shaft to the clutch and drive sprocket assembly which is transferred directly to the rear driveshaft, and also to the output shaft and front driveshaft by the drive chain. The oil pump circulates gear lube throughout the case to provide clutch cooling.
Proper operation of all-wheel drive vehicles depends on tires of equal size, type and circumference on each wheel. Any difference in tire size can cause damage to the transfer case.