Electronic Shift Operation

The system consists of a pushbutton control, electronic control module, electric shift motor with integral shift position sensor and a speed sensor.

The transfer case is equipped with a magnetic clutch located inside the case next to the 2WD/4WD shift collar. The clutch is used to spin up the front drive system from zero to vehicle speed in less than a second. This spin-up allows the 2WD to 4WD shift to be made at any speed.

When the transfer case rear and front output shafts reach the same rotating speed, the spring loaded shift collar mechanically engages the mainshaft hub to the chain drive sprocket. The magnetic clutch is then deactivated. Shifts between 4WD high and 4WD low only occur with clutch interlock or transmission safety switches closed. Vehicle speed must also be 3 MPH or under.

When the operator selects the 4WD or 2WD drive mode, the actual shifting is carries out by electric motor mounted on the transfer case.