Warning: Do not remove the expansion tank cap while the engine is hot, beware of hot fluid splashing out. Wrap the lid with a thick cloth and slowly turn it counterclockwise. Wait for the pressure in the system to drop, then completely unscrew the cap.
Draining liquid
1. Let the engine cool down.
2. Remove the cover of the expansion tank.
3. Place a suitable container under the lower radiator hose. Disconnect the hose from the radiator and wait until the liquid is completely drained (see illustration).
4. There is no drain plug on the cylinder block, so the fluid cannot be drained completely.
Washing
5. If the coolant is not replaced in time, the antifreeze mixture will become diluted and the efficiency of the cooling system will gradually decrease, because. the channels will narrow due to rust and other precipitation.
6. Drain the system and remove the thermostat. Temporarily install the thermostat housing and reconnect the hose.
7. Insert a garden hose into the disconnected lower radiator hose. Direct a stream of clean water into the radiator and continue flushing it until clean water flows out of the opposite hole.
8. After flushing, install the thermostat and connect all hoses in the system.
9. If, after a sufficiently long time, the flowing water still does not become clean, flush the radiator with a special cleaning agent. It is important to carefully follow the product manufacturer's instructions.
10. If the coolant has been changed regularly, flushing is not required.
Filling
11. Make sure all hoses and brackets are in good condition.
12. Fill the system through the expansion tank cap.
13. Fill coolant slowly to prevent air pockets.
14. Most models have an automatic air vent cooling system. On models with a different type of system, unscrew the fitting on the thermostat elbow while filling the system (see illustration).
15. Start the engine and warm it up to normal operating temperature. Then turn off the engine and wait until it cools down. Check the system for leaks, especially around components you removed during previous work. Check the coolant level in the expansion tank and top up if necessary.
16. Check up reliability of fastening of all collars on hoses.
Antifreeze mixture
17. Use only ethylene glycol based antifreeze. The amount of antifreeze and temperature limits are specified in the Specifications.
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