INSPECTION

Check the hub for cracks and spline for wear.
Check the knuckle for cracks.

Check for defective bearing.

note

If the meshing of the wheel bearing outer race and the knuckle, or of the wheel bearing inner race and the hub, is loose, replace the bearing or damaged parts.

HUB STARTING TORQUE CHECK

1.Tighten the following special tools to the specified torque, and then press-in the hub into the knuckle.

Front hub remover and installer (MB991017)
Spacer (MB991000)

2.Rotate the hub in order to seat the bearing.

3.Measure the hub starting torque by using the following special tools.

Torque wrench (MB990685)
Preload socket (MB990326)

Limit: 2.5 N·m
4.The starting torque must be within the limit and the hub rotation must be smooth.

WHEEL BEARING AXIAL PLAY CHECK

1.Measure to determine whether the wheel bearing axial play is within the limit or not by using the following special tools.

Front hub remover and installer (MB991017)
Spacer (MB991000)

Limit: 0 mm
2.If the play is not within the limit range while the nut is tightened to 200 ± 10 N·m, the bearing, hub and/or knuckle have probably not been installed correctly. Replace the bearing and re-install.