Disassembly
1. Press out the wheel bearing using a drift (special tool).
2. Remove the retaining ring from the steering knuckle by inserting a screwdriver into the recess.
Caution: Do not scratch the steering knuckle.
3. Press the inner race of the outer wheel bearing out of the wheel hub using a puller (suitable special tool), punches (special tool) and bearing puller (special tool).
4. Press the wheel bearing and sensor housing out of the steering knuckle using a punch (special tool)
Checking after disassembly
Wheel hub
Check for cracks in the wheel hubs (magnetic examination or staining test) and replace if necessary.
Steering knuckle
Check the steering knuckle for deformation, cracks or other damage, replace if necessary.
Retaining ring
Check the retaining ring for wear or cracks, replace if necessary.
Assembly
1. Temporarily secure the sensor housing to the steering knuckle.
Caution: The protrusion on the ABS sensor housing support surface must fit into the recess on the steering knuckle (as shown in the picture).
2. Press the wheel bearing into the steering knuckle using a drift (special tool) from the outside of the steering knuckle.
Attention:
- Press the wheel bearing until the sensor housing rests against the steering knuckle.
- Make sure that the protrusion on the ABS sensor support surface does not come out of the cutout on the steering knuckle.
- Install the sensor ring with the rubber side facing the inside of the steering knuckle.
- Do not apply pressure or load to the wheel bearing inner race and sealing area.
Note: The final pressing force should be 49,000 N (5,000 kg).
3. Place the snap ring on the steering knuckle.
Attention: Punch (special tool), which touches the inside of the wheel bearing, must not touch the sensor housing.
Post-assembly check
1. Apply a load of 34,300 to 49,000 N (from 3500 to 5000 kg). To ensure a good fit, turn back 10 times.
2. At a rotation speed of 8-12 rpm, hook the dynamometer onto the mounting hole (upper) on the stand and measure the turning torque.
Turning torque: 0.30-1.43 N·m (0.03-0.14 kg·m)
Dynamometer reading: 6.0-28.6 N (0.61 -2.92 kg)
Note:
If it is not possible to apply the specified load, do the following:
- Insert the drive shaft and tighten the wheel hub locknuts to the specified torque, then rotate forward and reverse 10 times to ensure a good fit.
- At 8-12 rpm, attach a dynamometer to the hub bolt and measure the torque.
Turning torque: 0.23 N·m (0.02 kg·m) or less
Dynamometer reading: 15.9 N (1.62 kg) or less