The typical solution for replacing the front wheel hub on a 2008-‘13 Mercedes-Benz Smart Car is a front wheel hub assembly, including a front wheel hub and knuckle. However, with a wheel hub-only solution for the Mercedes Smart Car, like the one offered by SKF, the installer can press the hub unit into the knuckle assembly because of three unique precision-machined pins.
Here are the complete instructions for the removal and installation of the wheel hub from the knuckle. Be sure to read all of the instructions before starting replacement and remember to follow the manufacturer’s recommended guidelines for removal and installation of the steering knuckle.
1. To remove the wheel bearing assembly from the knuckle, set the wheel bearing assembly and the knuckle securely onto a press table. Always follow the manufacturer’s guidelines for operating the press. The bearing should be pressed from the center of the wheel bearing assembly on top of the orbital-formed center.
2. Align the press to the center of the back side of the wheel bearing assembly, centering on top of the orbital forming.
3. To install the new wheel bearing assembly, use the enclosed three metal dowel rods to assist with the installation.
4. When the three metal dowel pins are aligned into the holes on the hub assembly, it will allow the hub assembly to be correctly pressed on the outer edge of the bearing so that it can be properly seated into the knuckle.
Warning: No grease or lubricants should be used when pressing the hub assembly into the knuckle. Never press the new bearing into place using only the center of the wheel flange spigot or the back orbital-formed center. This can damage the bearing.
5. Align the new wheel bearing assembly knuckle securely onto the press table. Move the press onto the center of your adapter so that it uses even pressure on all three of the metal dowel pins during installation.
6. Check the hub assembly after completing the press installation of the wheel bearing assembly to ensure correct seating of the hub assembly and smooth rotational operation.
Always test drive the vehicle and recheck fit and function of the hub assembly and related components.
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