FRONT AXLE 4C-7
Front Final Drive (244mm (9.6 in.) Size)
The differential system employs a hypoid gearing which is higher in strength and durability and quieter in operation
than the spiral bevel gears to lower the center of gravity of the vehicle thereby improving running stability. The differ-
ential gear box which includes the side gears and pinion gears is mounted to the differential carrier via the two (2)
taper roller bearings. The final drive gear reduces and changes axial rotary force (drive power) of transfer output to
rectangular direction, and also it distributes the power to the drive wheels.
Front Drive Shaft (Birfield Joint)
The drive power from the reduction and differential is transmitted from the outer drive shaft to the outer ring of Birfield
joint to its ball to its inner ring to the inner drive shaft finally to drive the tire. When the vehicle is steered the balls
automatically move according to the steering angle thereby operating as a complete constant velocity joint.
Legend
A. Birfield section
3. Ball
1. Outer shaft
4. Inner shaft
2. Outer ring
5. Inner ring
N4A0229E
N4A0230E