Front glass cleaner - removal and installation
The service life of the rubber band of the wiper blade is approximately six months. The car owner can purchase complete brushes for replacement or buy rubber bands and replace worn ones. In both cases, the brush will have to be removed from the lever (see illustration 17.0).
1. Move the brush arm away from the glass
2. Press the plastic leash that secures the brush on the arm and remove the brush from the arm (see illustration).
When installing the brush, make sure that the latch of the brush fastening on the lever is fixed. If the brush fittings are in order, it is enough to replace the worn tape.
3. Unbend the brackets at one end of the brush that hold the rubber band in the reinforcement and pull out the worn tape.
4. Install the metal holders on the new rubber band and insert it in place of the old one.
5. Secure the new tape with the retaining clips.
Windshield wiper arms - removal and installation
6. Open the hood.
7. Remove the black protective cap from the hex nut of the lever shaft and unscrew the nut. Don't forget to remove the washer (see illustration).
8. Remove the wiper arm from the axle.
When installing the levers, fix them so that the left brush is 6 cm from the lower edge of the glass, and the right brush is at the mark at the bottom of the windshield.
9. Make sure the wiper motor is in the park position.
10. Tighten the hex nuts to 16 Nm.
Wiper motor - check, removal and installation
Examination
Power is supplied to the wiper motor when the ignition is on, through terminal X of the unloader relay and through the fuse. The purpose of the motor terminals is as follows:
- terminal 53 receives voltage for the first brush speed.
- through terminal 53a, power is supplied to bring the wiper blades to their original position. This means that current flows from this terminal to the motor until the brushes are in the parking position.
- terminal 53b receives voltage for the second brush speed.
- via terminal 31b, the motor is braked when the brushes return to their original position after the wiper is turned off, so that the brushes do not go beyond the parking position.
Attention! The brushes must not be blocked outside the parking position, for example by snow or by freezing of the brush to the glass. In this case, when the ignition is turned on, terminal 53a will constantly supply power to the engine and, being unable to move the brushes, will burn out after a while. Be sure to release the brushes so they can get into the parking position.
If the wiper motor does not work, the cause may be a failure or a broken power wire.
11. Remove the left side of the lining in the rear of the engine compartment after the wiper arms have been removed.
12. Disconnect the multi-pin connector of the wiper motor.
13. Route two auxiliary wires from the battery to the motor. Connect the wire from the positive battery terminal to terminal 53 or 53a (a wire with black-gray insulation and a wire with green-yellow insulation are connected to them, respectively). Connect the wire from the negative terminal to terminal 31 (it is connected to a wire with brown insulation).
The electric motor should start, depending on the terminals to which the wires from the battery are connected, with the first speed of the brushes or with the second. If the motor does not work, then it is defective. If it works, then the reason for the failure is a wire break or a malfunction of the wiper switch.
Withdrawal
14. Turn on the ignition so that the electric motor moves the wiper brushes less than 45°.
15. Turn off the ignition and leave the brushes in this position.
16. Disconnect the wiper arms.
17. Remove the plastic trim under the hood.
18. Remove the two hex nuts on the top of the lever axles and one nut on the bottom of the motor (see illustration).
19. Disconnect the multi-pin motor plug.
20. Remove the electric motor together with drafts.
21. Disconnect drafts from the electric motor.
22. Turn out three bolts of a drive of a crank. To gain access to the bolts, the crank must be displaced (see illustration).
23. Power up the new motor briefly to get it running.
24. Turn off the power and wait until the motor is in the park position.
25. Install the electric motor on the console and connect the crank and linkage levers. The drive rod of the left lever is installed from below on the crank, and the rod of the right lever is mounted from above.
26. Tighten the crank, setting it so that line a (see illustration) was shifted by 6°relative to the center of the motor axis.
If this position of the crank is not maintained, then the lever will first move down when the wiper is turned on.
Attention! Do not overtighten the lever rod nuts. They sit on plastic bolts.
Rear window cleaner
The rear window wiper is activated when the steering column switch is moved towards the instrument panel. At the same time, the windshield washer pump also starts to work. A short press on the switch activates the intermittent wiper operation. Pressing the switch again turns off the interval mode. From terminal 53, voltage is supplied to the motor, and terminal 53a ensures that the motor returns to its original position.
Rear wiper motor
27. Disconnect the wiper arm.
28. Turn away a nut of an axis of the lever and remove it together with a spacer ring and a lining.
29. Remove a back door covering.
30. Disconnect the glass washer hose from the motor.
31. Turn out bolts of fastening of the holder of the electric motor of a cleaner of back glass and remove it together with the electric motor.
32. Disconnect the multi-pin plug.
33. Disconnect the holder from the electric motor.
When installing a new rear window wiper motor, first place it in the park position following the same procedure as for the windshield wiper motor.
34. Fix the screen wiper lever. The wiper blade in the park position should be 40 mm from the lower edge of the rear window.
The windshield washer reservoir is located on the left side of the engine compartment next to the coolant expansion tank. The volume of the windshield washer reservoir of a car without headlight washers is about 4 liters, and with headlight washers - about 6.5 liters.
First, the appropriate liquid additive is poured, and then water, so that they mix well.
Unheated windshield washer jets can freeze in severe frosts. To avoid this, it is recommended to increase the amount of antifreeze poured into the glass washer tank. Adding denatured alcohol to the windshield washer fluid leads to the formation of sediment, which clogs the jet holes.
Installing a conventional gasoline filter on the washer prevents clogging of the jet holes.
Attention! Models «Avant» the rear window washer reservoir with a swivel neck is located on the right side of the trunk under the cover.
Jets - jet adjustment
35. Insert a needle into the jet hole. The jet hole is drilled in a ball that can be turned with a needle.
36. Turn the jet ball with a needle so that the jet of washer fluid hits the glass. Dimensions for jet adjustment: a = 20 cm, b = 45 cm, c = 22 cm, d = 48 cm (see illustration).
Heated jets
Directly in front of the jets, a heating resistance is installed, which depends on the outside temperature. Power is supplied to this resistance from terminal X when the ignition is turned on. High initial current (0.5 - 0.7 A) provides fast defrosting of jets. To maintain the temperature of the jets, the current after the jet warm-up phase is reduced to approximately 200 mA. At outdoor temperatures below -15°C, the temperature maintenance current of the jets increases to 320 mA.
37. Disconnect the jet plug if it is necessary to establish the cause of the malfunction.
38. Connect a tester with a control light and make sure that power is supplied to the jets and the connection is on «mass» in order. If there is no voltage, then a wire break should be repaired. If power is supplied and the wiring is normal, then the jet must be replaced.
Headlight washer
If the car is equipped with a headlight washer, then with the dipped or main beam headlights on, when the glass washer is turned on, two jets of washer fluid are supplied from the headlight washer jets to the headlight lens. The headlight washer is controlled by a relay on the central wiring panel. The headlight washer pump is located at the bottom of the washer fluid reservoir. Headlight washer antifreeze and a suitable detergent are mixed in the same ratio as for a windshield washer. It goes without saying that the headlight washer jets must be adjusted so that the jets of washing liquid hit the right point on the lens. If the headlight lens cleaning quality is unsatisfactory, then the jet jet can be adjusted using the VAG 3010A tool.
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