INSPECTION


WHEEL BEARING ROTATION STARTING TORQUE AND AXIAL PLAY CHECK

1.Install the following special tools and tighten them to the specified torque.

  • Front hub remover and installer (MB991017)
  • Spacer (MB991000)
Tightening torque: 245 ± 29 N·m
2.Hold front wheel hub assembly in a vice, using wooden blocks.
3.Rotate the hub in order to seat the bearing.

4.Measure the wheel bearing rotation starting torque by using the following special tools.

  • Preload socket (MB990326)
  • Torque wrench (MB990685)
Limit: 2.1 N·m
5.If the rotation starting torque is not within the limit when the nut is tightened to 245 ± 29 N·m, replace the front wheel hub assembly. If there is any signs of binding or tight spots when the wheel bearing turns, replace it too.

6.Use the special tool to measure to determine whether the wheel bearing axial play is within the specified limit or not.
Limit: 0.05 mm
7.If the play exceeds the limit when the nut is tightened to 245 ± 29 N·m, replace the front wheel hub assembly.