Windshield wiper and washer circuit diagram
1 – washer motor; 2 – Windshield wiper and washer switch; 3 – Windscreen wiper relay; 4 – wiper gear motor; 5 – fuse box; 6 – ignition switch; 7 – generator; 8 – battery.
Windshield wiper repair basically comes down to straightening out deformed lever drive parts or replacing them with new ones. We recommend replacing a faulty gear motor with a new one.
To check the condition of the gearmotor contacts, it is not necessary to remove the windshield wiper.

We remove the cover, opening access to the gearbox.

We unscrew the screws..

…and remove the lid.

We unscrew the screw of the wiring harness fastening bracket..
[The original is available on the online resource: VazBook]

…and remove the panel with the gasket.
We inspect the contacts and conductive paths. We replace broken and worn elements as a whole.

To remove the windshield wiper, disconnect the connector block..

…and, having removed the left edge of the hood seal, we take out the wiring harness from the panel slot.

Using a 10 mm spanner, unscrew the brush lever mounting nut.

Using a 17 mm spanner, pull the lever off the axle splines.

Using a 22 mm wrench, unscrew the nut..

…and remove the bushing with the rubber gasket.
We also disassemble the drive of the second brush.

Using a 10 mm spanner, unscrew the two nuts securing the windshield wiper to the body.

Carefully remove the cleaner, trying not to bend the drive rods.

Using a screwdriver, we remove the short rod from the crank ball joint.

Using a 10 mm spanner, unscrew the nut and remove the crank.

Using a 10 mm spanner, unscrew three bolts…

…and remove the wiper bracket.
To disassemble the gearmotor, remove the cover and the panel with wires (as stated above).

Using a screwdriver, we remove the retaining ring...

…a protective cap, steel and textolite washers.

After removing the seal and pressing on the axle, we push the gear out of the gearbox.

We remove the textolite and steel washers from its axis.

Using a screwdriver, unscrew the two screws securing the gearbox,...

…we take out the plates…

…and remove the electric motor housing, holding the anchor by the worm with a screwdriver.

We remove the anchor from the gearbox with an adjusting washer placed on its axis.

The spring and thrust bearing, installed at the end of the channel, remain in the cover.
We take the brushes out of the brush holder.
To remove dust from the electric motor, blow it with compressed air. Check the condition of the brushes, collector and anchor winding.
The brushes should move freely in the brush holders without jamming, and the springs should remain elastic and undamaged. Clean the collector with fine-grained sandpaper, then wipe with solvent or gasoline. If the collector is badly burnt or worn out, it is better to replace the electric motor.
We begin assembling the windshield wiper by installing the anchor in the electric motor cover, for which…

…we bend back the end walls of the brush holders with a thin screwdriver...

...and we insert the brushes into them, sinking them completely, as far as the slots for the wires allow.

We install an anchor in the lid.

We insert the springs into their places at the ends of the brush holder and bend the bent walls of the brush holders.
After covering the gear and other rubbing joints with Litol-24 grease, we carry out further assembly in the reverse order of disassembly.
Attention! For the correct operation of the wiper blades (to ensure that the wiper blades stop in the desired position):

...before installing the gear motor on the bracket, turn it on for a short time, connecting it to the vehicle's on-board network via a connector.
Only after the electric motor has completely stopped do we disconnect the block and continue further assembly.

We install the crank parallel to the short drive rod.
