
The design of the gearbox is discussed in the article - Design features of the rear gearbox VAZ-2123
We wash and clean the gearbox from dirt and oil.

Before inspecting the parts of the gearbox, thoroughly clean, remove all deposits with a brush or scraper and clean the holes and splines from possible contamination; then flush (with kerosene, thinner, etc.) to remove and dissolve any remaining oil.

Gearbox - mechanical with manual shifting, has five forward gears and one reverse gear, all forward gears are synchronized

Disassembly of a partially synchronized gearbox
Disassemble in the following order:
Remove the side cover with the switch mechanism.