Remove the transfer case and clean it of dirt
Drain the oil from the transfer case.
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.
When disassembling the box, it is advisable to mark in any way, or remember where which part was, because many parts are similar.
When installing new parts, you need to take into account the gaps and lapping of adjacent 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
We disassemble the gear selection mechanism when parts of the mechanism are worn
