Attention! The procedure is performed on a completely cold engine, in compliance with the safety measures for working with toxic liquids.
1. Carefully unscrew the radiator cap by wrapping it with a rag swab.
2. Move the heater control lever to position "hot".
3. Loosen the radiator drain plug (arrow).
4. Drain the fluid into a container, taking care not to get the fluid on the drive belts or rubber parts.
5. If necessary, remove the expansion tank, drain the remaining liquid and rinse.
6. Substitute a vessel under the drain plug of the cylinder block (arrow).
7. Unscrew the plug on the cylinder block, then unscrew the air bleed fittings (fitting is indicated by an arrow). Drain the fluid from the cylinder block.
8. Wrap the drain plug, fill the radiator with clean water. After the water flows out of the engine, wrap and tighten the drain plug of the cylinder block.
9. Continue pouring water until water flows out of the air vent holes. Screw in the hole plugs and tighten to the specified torque.
10. Add water to the MAX mark on the expansion tank, tighten the radiator cap tightly.
11. Start the engine and warm up until the auxiliary cooling fan turns on. Bring the speed up to 3000 rpm 2-3 times, stop the engine and wait for it to cool completely.
12. Repeat the steps in paragraphs. 3-11 until the water that comes out is clear.
13. Drain the water and repeat the steps in paragraphs. 8-10, but this time fill in antifreeze in the right proportion. Lubricate the drain plug of the cylinder block with a fixing compound and tighten to the specified torque.
14. Start the engine and warm up to operating temperature, stop the engine and wait for it to cool completely.
15. Make sure that there are no leaks from under the disassembled connections. Check the fluid level in the expansion tank, top up if necessary.