If the rubber wiper blade is in good condition, the cause of abnormal operation of the cleaner (intermittent stroke brush and vibration
(Fig. 15.55) can be irregular angles of the arm brushes. If the installation angle of the brush is maintained correctly
(Fig. 15.56), rubber brush will take the necessary position and will follow the lever in both directions.
Adjust the angle can be, bending the arm tube brushes with slits formed therein. In
Fig. 15.57 shows a special tool to adjust the angle of Volkswagen installing brushes and place podgibaniem lever. In the case of wear, replace the brush holder brush.
