Notes on wiper arm adjustment - AH82.30-P-0001-01GZ

Models 164, 251 

By checking the angle of incidence of the wiper arms in parked position and reverse position, it can be assessed whether one wiper arm, both wiper arms or the wiper system are to be adjusted.

• Adjusting wiper arm 

  In the event that the check values deviate from the tolerance range in reverse position only or both in parked position and in reverse position.

  The angles of incidence are changed by "twisting" (distorting) the wiper arms with the aid of the adjuster levers. The angle of incidence of the wiper arm always has to be adjusted in parked position.

  In doing so the angle of incidence in parked position and reverse position changes by the same amount. The angle of incidence of the wiper arm to be adjusted is changed by at least the value of the tolerance deviation in reverse position. To make sure that both adjustment values lie within the tolerance range, the angles of incidence have to be checked again and corrected if necessary.

• Adjusting wiper system 

  In the event that the check values of both wiper arms deviate from the tolerance range in parked position only.