
Disassembling the gearbox shafts is necessary to replace the shaft parts.
Removing the gearbox is discussed in the article - "How to replace the gearbox of the Niva Chevrolet"
Disassembling the gearbox is discussed in the article - "Repairing the gearbox of the VAZ-2123 car"

The engine is removed from the car upwards. To remove the engine, you will need a lifting device with a lifting capacity of at least 300 kg.

To check the compression, it is recommended to use compression testers for gasoline engines of the G-324 type by Triscko Taiwan or KA – 6721K by KT TOOLS Taiwan

Air flows in the passenger compartment are distributed by air ducts located inside the instrument panel