1 - electric motor; 2 - reducer
1. Loosen the wiper crank nut.
2. Remove the crank from the gearbox shaft by prying it with a screwdriver.
3. Unscrew the three bolts securing the gearbox with the electric motor.
4. Unscrew the two screws securing the motor wires and disconnect the wires from the thermal bimetal fuse. Remove the engine from the bracket.
5. Remove the circlip from the gearbox shaft.
6. Remove the adjusting washers from the gearbox shaft.
Mark the shims so that they are installed in the same places and in the same quantity during assembly.
7. Loosen the three screws...
Warning. When disassembling, do not unscrew the adjusting screw, otherwise the axial clearance of the armature shaft will be violated.
8....remove the gearbox cover.
9. Remove the panel from the gearbox.
10. Remove the gear reducer.
11. Remove two screws (the second is behind the gearbox housing)...
12....and remove the two cage nuts.
13. Remove the gearbox housing with brush holder from the motor housing.
14. Remove the anchor from the motor housing. After disassembly, blow out the motor housing with compressed air to remove coal dust.
Fixed wiper arms: 1 - crank; 2 - short thrust; 3 - hinge rods; 4 – the roller of the mechanism of a screen wiper; 5 - long pull
15. Remove the circlips from both wiper shafts.
16. Remove the shims from both wiper shafts.
17. Take out drafts from an arm of a screen wiper and remove adjusting washers from both rollers.
18. Remove the O-rings from the grooves on both sides of the bracket.