Disassembly, assembly and inspection of the windshield wiper gear motor (VAZ-1111)

To disassemble the gearmotor, remove the panel with the limit switch contacts from the cover, unscrew the screws securing the gearbox cover and remove it together with the driven gear. Remove the intermediate and driving gears from the gearbox housing, then unscrew the screws securing the gearbox housing to the electric motor housing and disconnect them. Remove the electric motor anchor.

To remove the driven gear of the gearbox, unscrew the crank fastening nut and remove it. Remove the locking ring from the axle and take the axle with the gear and washers out of the cover. After disassembly, blow out the internal cavities of the electric motor with compressed air to remove carbon dust deposits and check the condition of the brushes and collector.

The brushes should move freely in the brush holders without jamming, and the springs should be intact and have sufficient elasticity. The collector is cleaned with sandpaper of 10-M40 grain size, and then wiped with a clean rag, lightly greased with technical petroleum jelly. If the collector is badly burnt or worn out, it is better to replace the gear motor with a new one. Check for signs of jamming on the journals of the anchor shaft. If necessary, they are read with the same sandpaper.

The gearmotor assembly is performed in the reverse order of disassembly. During assembly, the brushes are moved away from the collector so as not to break them or damage their edges, and the anchor is inserted into the housing with special care, avoiding impacts on the poles so as not to break them. After assembly, it is recommended to tap the electric motor housing with a wooden hammer to center the bearings, and then test it on the stand.

The article is copied from the website VAZbook.ru