The cooling system has two drain holes closed with threaded plugs. When draining fluid from the system, these holes must be open.
1. Remove the cap from the expansion tank, and then unscrew the drain plug at the bottom of the radiator. As a rule, an expansion tank with a cap is located in the engine compartment as shown in illustration 2.1.
2.1 Remove cover 1 from the expansion tank when draining the liquid from the cooling system. 2 - air filter
And only cars with an XU engine and air conditioning have a different location for the expansion tank. On some vehicles, the drain pipe next to the drain hole provides a possibility for connecting a hose, which ensures a more accurate drain of the liquid directly into the substituted container (see illustration 2.1a).
2.1a Drain nipple for connecting a hose to drain the coolant from the system
Attention! Do not remove the cap from the expansion tank when the engine is hot.
If the coolant is drained for replacement, it is recommended to disconnect the lower radiator hose.
2. Remove the engine mudguard
3. Remove the drain plug on the cylinder block next to the flywheel (see illustration).
2.3 Remove the drain plug on the cylinder block next to the flywheel. This drain hole may be located elsewhere on other engines. The illustration shows a 1.9L diesel engine
4. Turn out the plugs of the ventilation holes, guided by the relevant diagrams (see above). On XU engines, one vent is on the right side of the cylinder block next to the air filter, and the second is near the right side of the air filter (see illustration 2.4).
2.4 Air vents 1 and 2 of the XU engine cooling system.
For vehicles with engine capacity2,.0 liters without air conditioning vent hole on the hose itself at the point of its connection.
On engines with 16 valves, the corresponding vents are located at the right end of the hoses. In addition, there is a vent on the radiator. Diesel engines have only one vent located at point 1 (see illustration 2.4).
5. Flush the coolant circulation system if it has not been drained for a long time. To do this, insert the hose into the radiator neck by connecting the other end of the hose to a water tap. Flush the system until clean water comes out of the drains and vents.
6. Prepare a mixture whose frost resistance corresponds to the air temperature for a given period of time. A mixture of 35% antifreeze and 65% water is suitable for normal sub-zero temperatures (up to -15°C). The coolant, consisting of 50% antifreeze and 50% water, protects the system in temperatures down to -35°C. When purchasing antifreeze, you should be guided by the instructions of the manufacturer of the power plant.
7. Screw the plugs into the drain holes or connect the lower radiator hose. Tighten the screw plugs in the cylinder block with a torque of 25 Nm. The plugs have gaskets that ensure the tightness of the system. As already mentioned, a special container is used to fill the coolant, which is screwed onto the neck of the expansion tank instead of the cap (see illustration 2.7).
2.7 To fill the coolant, use a special container that is screwed onto the neck of the expansion tank instead of the cap
On engines with 16 valves, the container is inserted into the neck of the tank. The container connected in this way forms a single unit with the expansion tank, and the liquid level in this case is higher than even highly fixed hoses. As a result, the cooling system can be filled completely without fear of air pockets.
8. Top up with fluid until it continuously pours out of the vent. Screw in and tighten the vent plug.
9. Make sure the coolant reservoir is full and deflate the engine. After starting the engine, increase its speed, keeping it within 1500-2000 rpm, waiting for the radiator fan to turn on and off. After that, turn off the engine.
10. Remove the coolant refill container.
Attention! The remaining coolant in the container may be hot. Some coolant will leak out, but the system will be filled.
11. Screw on a mouth of a broad tank of the car with the petrol engine a cover. Make sure the drain and vent plugs are screwed in and tight. The engine must not be started with loose plugs.
12. Shut off the diesel engine and allow the coolant to cool (within about 3 hours). Check the fluid level in the expansion tank and close it with a cap. The coolant level in the reservoir should be at «max» (see illustration).
2.12 Coolant reservoir. When the engine is cold, the coolant level must be at the level «max»
Otherwise, add coolant and tighten the cap to the second tooth.
13. Reinstall the engine mudguard.