Wiper Arm: Adjustments

WM 922516 Adjusting wiper arm attack angle

Tools





Preliminary work

Preliminary work for adjusting wiper arm attack angle

Information

The wiper arm attack angle will need to be checked and adjusted if the customer complains of: rubbing or hesitation of wiper, noises when wiping or uneven wiping area.

It is important that the wiper blades are inspected for wear and the windscreen is free of contamination.

1. Check condition of windscreen and clean off any contamination.
2. Remove wiper blade. -> 922719 Removing and installing wiper blade - section on "Removing" 92271900 Removing and installing wiper blade
3. Inspect condition of wiper blade and replace if necessary.

Adjusting wiper arm

Adjusting wiper arm attack angle

Special tools: Adjustment device 9737





Tools overview





Information

Wiper system must be in the parking position. Before starting work, allow the wiper system to run 2 - 3 times with water spray.

WARNING

Unexpected switching on of wiper system while working on the wiper arms.

- Danger of trapping from wiper arms.

-> Switch off ignition and remove ignition key.

1. Fit adapter -B- for the sports car flush on the wiper and tighten with the knurled screw.





Screw adapter onto wiper arm

2. Mount the angle measuring device -A- on the adapter and tighten with the knurled screw.





Screwing angle measuring device to adapter

3. Read off wiper arm attack angle using the angle measuring device and compare with the nominal values.





4. If the nominal values are not achieved, the wiper arm must be adjusted using the two adjusting tools.
5. Mount both adjusting tools on the wiper arm and adjust the angle to the nominal value by turning the front adjusting tool.





Adjusting wiper arm angle to nominal value

Subsequent work

Subsequent work for adjusting wiper arm attack angle

1. Install wiper blade. -> 922719 Removing and installing wiper blade - section on "Installing" 92271900 Removing and installing wiper blade
2. Check wiper function of wiper system.