REAR AXLE HUB ASSEMBLY INSPECTION


HUB STARTING TORQUE CHECK

1.Tighten the following special tools in rear hub assembly to the specified torque.

  • Bolt (MB990999)
  • Drag link bushing remover and installer A (MB990843)
Tightening torque: 220 ± 10 N·m

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

  • Torque wrench (MB990685)
  • Preload socket (MB990326)
Limit: Less than 3.0 N·m
3.Hub starting torque must be under the limit value and there should be no roughness when rotating the hub.

WHEEL BEARING AXIAL PLAY CHECK


1.Using the following special tools, tightening rear wheel hub. Measure to determine whether the wheel bearing axial play is within the limit or not.

  • Bolt (MB990999)
  • Drag link bushing remover and installer A (MB990843)
Limit: 0 mm
2.If the wheel bearing axial play exceeds the limit value at the specified torque of 220 ± 10 N·m, replace the rear hub assembly.