
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.

The basic work of repairing a five-speed gearbox is similar to repairing a four-speed gearbox.
Disassembly and assembly of a four-speed gearbox is described in the article - "Disassembly and assembly gearboxes VAZ-2107”.

The drive gear of the main gear is made integral with the shaft (shank) and is installed in the neck of the gearbox on two tapered bearings.

The transfer box VAZ-2123 is designed to change the amount of torque and distribute it between the front and rear axles.

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

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.