Removal and installation the windshield wiper mechanism (BMW 5 Series E34)

The windshield wiper motor is removed together with the rods. Before removing, mark the position of the brushes on the glass with adhesive tape.

Removal

Disconnect the ground wire from the battery.



Remove the wiper arms. Tilt the arm away from the windshield, releasing the plastic cover. Lift the cover, lower the arm again and fold the cover back completely.

Unscrew the fastening nut 1 and remove the brush lever from the axle.

Caution: On vehicles with an adjustable wiper drive (ADV), when removing from the driver's side, remove the bolt at the location indicated by the arrow.

Remove the brush lever.



Remove the bulkhead trim and heater fan.

On vehicles equipped with air conditioning, remove the temperature sensor with wiring from the fan housing.



Release the "arrow" clamps with a screwdriver. On some models, screws are installed instead of clamps. Release the remaining clamps inside with your fingers and remove the side elements of the case with the ventilation flaps.

Caution: On vehicles equipped with air conditioning, disconnect the cable from the top with the ventilation flaps closed. To close the air flap, set the air volume regulator in the passenger compartment to zero. Connect the battery and briefly turn on the ignition to close the flap: disconnect the battery.

Remove the left plastic grille under the windshield. To do this, use a screwdriver to pull out the upper parts of the clips, then pull the clips out completely.



Loosen the nuts on both support axles and remove the washers located underneath them.



Disconnect the windshield wiper motor connector.

Press the windshield wiper linkage down and pull it out to the side.



If necessary, loosen the motor screws. The brush pressure adjustment device motor (ADV motor) is mounted on vehicles with an extended equipment set with three screws on the left windshield wiper support. In case of failure, the motor assembly is replaced, since precise adjustment is impossible.

Installation

Insert the motor into the wiper rods.



If the motor was removed, connect the connector to the motor.

Connect the ground wire to the battery.

Turn the motor on briefly and turn it off with the windshield wiper switch until the motor returns to its original position.

Align parts 1 and 2 so that they are in line, then screw on the motor.



Insert the windshield wiper rods and screw them to the support axles, using spacer washers.

Connect the connector and insert it into the support.



Press the plastic grille under the windshield and secure it with clamps. In this case, the upper part 1 is inserted into the lower part 2. Replace damaged clamps.

Place the brush levers in accordance with the marking made during removal and tighten the nuts. When re-adjusting, measure the distance from the brush to the lower edge of the glass with a ruler. At the edge of the brush, this measurement should be 1.5 cm.

Caution: Press the brush lever all the way down, otherwise the brush pressure control (ADV) will not work properly.

Wet the windshield and check that the wipers are installed in their original position. If necessary, rearrange the wiper arms.





Install and secure the upper part of the heater fan with the air damper. On cars with air conditioners, pay attention to the installation position of the input box.

Install the heater fan motor.