| 1. To check fastening of a drain stopper of cooling liquid on the block of cylinders. |
| 2. To open three deaerators. |
| 3. To fill the cooling system; when liquid begins to follow, close deaerators. Level of cooling liquid has to be made even to a radiator stopper. |
| 4. To start the engine and to wait until the fan turns on (without stopper). |
| 5. To add the level of cooling liquid in a radiator to the corresponding value. |
| 6. After full cooling of the engine to check the level of cooling liquid and in case of need to add it. |
