Checking the condition of the brushes and the initial position of the wiper arm
2. Wiper blade assemblies should be inspected regularly. If the inspection reveals the presence of hardening or cracks in the rubber of the brushes, replace the brushes. If nothing out of the ordinary is found on inspection, wet the windshield, turn on the wipers, let them run for a while, and turn them off. Uneven brush marks on the glass or streaks on clean glass indicate that the brushes should be replaced.
3. If the brushes do not clean the windshield well enough, then the following reasons for this are possible.
- Wax particles got on the windshield while the car was being washed. These particles can be removed by adding a detergent to the washer fluid that has the property of dissolving wax.
- Filling the glass cleaner reservoir with wax-dissolving properties can significantly improve the performance of the windshield wipers. Grease-dissolving cleaners cannot completely clean glass.
- Damage to the brushes can also cause poor cleaning of the windows, the brushes should be replaced.
- The angle of installation of the windshield wiper arms does not correspond to the required one.
4. During the operation of the wiper mechanism, loosening of the mounting nuts can occur, so they should be checked and, if necessary, tightened each time the brushes are checked.
Examination
5. Turn the windshield wipers on and off until they return to their original position.
Windshield:
Check the distance between the brush and the lower edge of the windshield with the wiper off. The distance must be on the driver's side a = 15 - 25 mm, on the front passenger side b = 17 - 27 mm. These places are marked -1-.
Rear glass:
When the wiper is off, the brush should lie horizontally at the upper edge of the wiper stop plane.
Wiper Arm Angle Check
Warning: The angle of the wiper arm should be checked when the windshield is not wiping effectively or when there is noise from the wipers.
6. Turn the wipers on and off until the wiper arms return to their original position. Remove the wiper blades.
7. Insert the wiper arm 1 into the HAZET 4851–1 or AUDI 3358 tool and secure with the bolt.
Checking and adjusting the angle of the wiper arm
- 1 wrench
- 2 wiper arm
- 3 tool AUDI 3358
8. If adjustment is necessary, carefully turn the AUDI 3358 tool with a wrench 1 until the pointer is on the scale at the required value of±2°.
Nominal wiper arm tilt angles.
- Driver side: -9°
- Passenger's side -3°
- Rear wiper: 0 - 2°
9. Remove the tool AUDI 3358, install and fix the wiper blades.
10. Install the brush and check the operation of the wiper.
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