Wiper Arm: Adjustments
WM 922515 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 the condition of the windscreen and clean it if it is dirty.
2. Remove wiper blade. -> 922719 Removing and installing wiper blade - section on "Removing" 922719 Removing and installing wiper blade
3. Check the condition of the wiper blade and replace it 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
Electrically moved components
- Danger of limbs being trapped or severed
-> Switch off electric power to drive motor.
-> Make sure it does not switch on again.
-> Check that there is no electric charge.
1. Fit the adapter -B- flush on the wiper arm and secure with the knurled screw.
Screw adapter onto wiper arm
2. Fit the angle measuring device -A- on the adapter and secure with the knurled screw.
Screwing angle measuring device to adapter
3. Read off wiper arm angle of attack 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. Slide the two angle adjusting tools onto the wiper arm and set the angle as required by turning the front adjusting tool.
Setting wiper arm angle according to specifications
Subsequent work
Subsequent work for adjusting wiper arm attack angle
1. Install wiper blade. -> 922719 Removing and installing wiper blade - section on "Installing" 922719 Removing and installing wiper blade
2. Check wiper function of wiper system.