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- 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.
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![](../../../img/26/AC500594AD00ENG.png)
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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.
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![](../../../img/26/AC711871AB00ENG.png)
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3.Measure the hub starting
torque by using the following special
tools.
- Torque wrench (MB990685)
- Preload socket (MB990326)
Limit: 2.5 N·m <Except vehicles
for mining use>, 3.9 N·m <Vehicles
for mining use> 4.The starting torque
must be within the limit and the hub rotation must be
smooth.
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![](../../../img/26/AC500596AC00ENG.png)
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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.
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