Front Steering Knuckle: Description and Operation

FRONT SUSPENSION

KNUCKLE

DESCRIPTION
The steering knuckle is a single casting with legs machined for attachment to the vehicle's upper and lower control arm ball joints. the steering knuckle has the hub and bearing mounted in its center. The axle shaft constant velocity joint stub shaft is splined through the hub and bearing assembly in the center of the knuckle. The steering knuckle also supports and aligns the front brake caliper adapter and caliper assembly.

OPERATION
The steering knuckle pivots between the upper and lower ball joints. The steering gear outer tie rod end connects to the trailing end of each knuckle, allowing the vehicle to be steered. The center of the knuckle supports the hub and bearing and axle shaft.

The front suspension steering knuckle is not a repairable component of the front suspension. It must be replaced if found to be damaged in any way. If it is determined that the steering knuckle is bent when servicing the vehicle, no attempt is to be made to straighten the steering knuckle.