Checking and cleaning

Fig 1: Cleaning Drive Shaft End

Courtesy of VOLVO CARS OF NORTH AMERICA.

Clean: 

• the drive shaft end, especially if there is rust on the edge. See the figure.

  (The outer seal ring of the wheel hug will lie against this surface).

• the mating faces of the wheel hub in the wheel spindle
• the wheel sensor
• the sensor seat in the wheel spindle so it is absolutely clean
• the wheel sensor. Use a soft brush.