Front wheel hub and steering knuckle.
1 - upper arm of the front suspension, 2 - brake disc, 3 - front wheel hub, 4 - steering knuckle, 5 - lower ball joint, 6 - brake caliper, 7 - steering rod end, 8 - bearing, 9 - retaining ring, 10 - drive shaft.
Removal
1. Jack up the car, unscrew the bolts and remove the front wheel.
- Tightening torque: 90-110 Nm
2. Remove the wheel speed sensor (see chapter "Brake system").
3. Disconnect the brake hose from the steering knuckle.
4. Loosen the drive shaft lock nut.
- a) Remove the cotter pin and lock nut cap.
- b) Unscrew the lock nut,
- Tightening torque: 200-260 Nm
5. Remove the two bolts and disconnect the lower ball joint from the steering knuckle.
- Tightening torque: 100-120 Nm
6. Using light blows from a plastic-faced hammer, disconnect the drive shaft from the wheel hub.
7. Loosen the bolt and, having disconnected the brake caliper from the steering knuckle, hang it on a wire.
- Tightening torque: 69-85 Nm
8. Disconnect the tie rod end from the steering knuckle.
- a) Remove the cotter pin and unscrew the nut.
- Tightening torque: 24-34 Nm
- b) Using a puller, disconnect the steering rod end from the steering knuckle.
Note: Be careful not to damage the tie rod end boot.
9. Loosen the front suspension upper arm nut.
- Tightening torque: 35-45 Nm
Note: Do not loosen the nut completely.
10. Using the special tool, disconnect the upper arm from the steering knuckle.
11. Remove the steering knuckle assembly with the hub and brake disc.
Disassembly
1. Remove the brake disc from the hub.
2. Remove the retaining ring.
3. Using a special tool, separate the hub from the steering knuckle.
4. Using a special tool, remove the inner bearing race from the hub.
5. Using a special tool, remove the outer bearing race from the hub.
Examination
1. Check the hub for cracks and scratches.
2. Check the retaining ring for damage.
3. Check for burrs or damage on the inner surface of the steering knuckle.
Assembly
1. Apply special grease to the mating surfaces of the steering knuckle and bearing.
2. Using a special tool, press the bearing into the steering knuckle.
Note:
- Use a new bearing.
- To avoid damage, do not press the bearing inner race.
3. Install the retaining ring into the steering knuckle.
4. Using a special tool, press the hub into the steering knuckle.
Note: Be careful not to damage the bearing.
5. Using a special tool, press the hub into the steering knuckle.
6. Rotate the hub to ensure the bearing is seated correctly.
7. Having fixed the steering knuckle assembly with the hub in a vice, measure the moment of bearing release.
- Breakaway torque: 1.8 Nm or less
8. Using a dial indicator, measure the hub runout.
- Hub runout: 0.008mm or less
9. Remove the special tool from the hub.
10. Install the brake disc onto the hub.
Installation
The installation of the front wheel hub and steering knuckle is carried out in the reverse order of removal; the tightening torques of the bolts and nuts are indicated in the text describing the removal procedure and in the assembly drawing "Front wheel hub and steering knuckle".