COMPONENT OPERATION / Axle Traveling Straight with the Same Road Resis- tances to Left and Right Tires As the differential pinion gear and the left and right pinion gears rotate solidly, the drive forces of the left and right tires are the same similarly to the TPD. Traveling on Soft Roads (Different Road Resis- tances to Left and Right Tires) Drive force is transmitted to the case, pressure ring, and spider through the ring gear. At this time, the spider having the cam construction pushes the pressure ring with the thrust (P). Clutch disc is geared with the case through the pressure ring.
Side gears fitted to the clutch disc by spline rotate solidly with the case, and the left and right gears rotate at the same speed. Like this, the left and right axle shafts fitted to the side gears by spline tend to rotate solidly with the case, and the differential movement restriction works. In case the drive force provided for the skidding tire is larger than the road resistance, part of the torque of the skidding tire is added to the tire contacting the road by the differential movement restriction (be- cause of the same speed of the left and right tires), and the tire contacting the road is provided with more torque.
Until the difference of the resistances between the left and right tires exceeds certain value (until the clutch disc begins to slip), the left and right gears solidly rotate at a constant speed. On such soft roads, the drive force increases by 1.5 times the value for the TPD if the LSD is provided. Clutch Disc P P Pressure Plate Spider Pressure Ring T4GB-03-10-004 T3-10-9