Disassembly
1. Press out the wheel bearing with a punch (special tool).
2. Take out a lock ring from a rotary fist, having inserted a screw-driver into a cut.
Caution: Do not scratch the steering knuckle.
3. Pull the outer wheel bearing inner race 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 knuckle using a punch (special tool)
Check after disassembly
Wheel hub
Check for cracks in the wheel hubs (magnetic examination or staining test) and replace if necessary.
Rounded fist
Check for deformation, cracks or other damage on the steering knuckle, replace if necessary.
Retaining ring
Check circlip for wear or cracks, replace if necessary.
Assembly
1. Temporarily attach the sensor housing to the steering knuckle.
Attention: The protrusion on the bearing surface of the ABS sensor housing must fit into the cutout on the steering knuckle (as it shown on the picture).
2. Press the wheel bearing into the steering knuckle using a punch (special tool) from the outside of the steering knuckle.
Attention:
- Press in the wheel bearing until the sensor housing rests against the steering knuckle.
- Make sure that the projection on the bearing surface of the ABS sensor has not come out of the cutout on the steering knuckle.
- Install the sensor ring with the rubber side toward the inside of the steering knuckle.
- Do not apply pressure or load to the wheel bearing inner race and sealing area.
Note: Final pressing force must be 49000 N (5000 kg).
3. Put a lock ring on a rotary fist.
Attention: punch (special tool), which touches the inner side of the wheel bearing, must not touch the sensor housing.
Post build check
1. Apply a load of 34300 to 49000 N (from 3500 to 5000 kg). Rotate backwards 10 times to ensure a good fit.
2. At a speed of 8-12 rpm, hook the dynamometer on the mounting hole (upper) on the stand and measure the turning moment.
Turning torque: 0.30-1.43 Nm (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 correct torque, then rotate forward and backward 10 times to ensure a good fit.
- At a speed of 8-12 rpm, hook the dynamometer on the hub bolt and measure the torque.
Turning torque: 0.23 Nm (0.02 kg m) or less
Dynamometer reading: 15.9 N (1.62 kg) or less