Wheel Knuckle, Wheel Hub And Bearing Assembly
| Item Number | Description |
|---|---|
| 1 | Circlip - lower ball joint |
| 2 | Ball joint - lower |
| 3 | Park brake assembly attachment holes |
| 4 | Wheel speed sensor location |
| 5 | Wheel speed sensor cable bracket attachment |
| 6 | Ball joint - upper |
| 7 | Knuckle |
| 8 | Brake caliper attachment holes |
| 9 | Wheel bearing |
| 10 | Circlip - wheel bearing retention |
| 11 | Nut - halfshaft |
| 12 | Wheel hub |
| 13 | Wheel studs |
The wheel knuckle is a machined forging which is located between the upper and lower control arms. The knuckle is fitted with two ball joints which are pressed into the knuckle, with the lower ball joint being secured with a circlip. The ball joints are positioned between brackets on the upper and lower control arms and secured to the arms with a bolt and self-locking nut.
The wheel knuckle provides the location for the rear wheel taper roller bearing, which is pressed into a machined bore and retained with a circlip. The wheel bearing is a serviceable item. The knuckle has a machined bore which provides the location for the wheel speed sensor. Four threaded holes allow for the attachment of the park brake assembly. A cast boss on the knuckle provides positive location for the park brake assembly. Two bosses on the knuckle casting provide the attachment points for the rear brake caliper.
The wheel hub is a machined casting which is pressed into the wheel bearing in the knuckle. The hub has a splined center bore which mates with corresponding splines on the halfshaft. Five M14 studs are pressed into the wheel hub and provide for the attachment of the road wheel with wheel nuts. Rotation of the halfshaft is passed, via the splines, to the wheel hub which rotates on the taper roller bearing.