
Disassembly of the transfer case was considered in the article - Disassembly of the transfer case VAZ-2123
Before inspection, thoroughly clean all parts of the transfer box with a brush and scraper, and then rinse. Blow the parts with compressed air.

Wash gear parts thoroughly before inspecting.
This will make it easier to identify wear and damage to parts

The hydraulic block or hydraulic distributor, receiving signals from the electronic control unit, switches channels in the control valve block and controls the clutch engagement pressure