Transfer Case-Power Flow

In the neutral position, no power is transmitted to the front or rear drivetrain.





Power Flow in 2H

When the driver selects 2H, the (A) reduction hub is in the forward position and puts the transfer case into direct drive. The (B) input shaft and (C) rear output shaft are locked together. The (D) 4-wheel drive lockup hub is in the forward position disengaging the front driveline.





Power Flow in 4H

In 4-wheel drive-high range (4H), the (A) 4-wheel drive lockup hub moves rearward and locks the (B) chain sprocket and (C) chain to the (D) rear output shaft. Both the (D) rear output shaft and (E) front output shaft are being driven in high range. The (F) reduction hub is in the forward position.





Power Flow in 4L

In 4-wheel drive-low range (4L), the (A) reduction hub moves rearward and the (B) low range gearset is engaged to the (C) rear output shaft. The ring gear is locked and results in the (B) front planet gear turning slower than the (D) input shaft. This in turn makes the (C) rear output shaft and (E) front output shaft turn at a slower speed than the (D) input shaft. This action increases the pulling power available to the wheels.