| 1. Dismantle unit details which interfere with access to the corresponding cover of cast openings. | 
 
 | 2. Install the screw-driver or a narrow chisel on edge of a cover. | 
 
 |  | 3. Carefully drive in inside a locking cover (121) on the one hand until it does not turn on 90 °. | 
 
 |  | 4. Extend the turned cover by means of a pipe key. | 
 
 |  | 5. Carefully clear a cast opening of deposits. The sealing surface (arrow) has to be cleared of deposits. | 
 
 | 6. Cover a sealing surface with sealant (for example, Loctite N241 or Curil). | 
 
 |  | 7. Drive a new locking cover the suitable probe. Let's harden to sealant according to the instruction of the manufacturer (about 45 min.). | 
 
 | 8. Establish the dismantled parts of the unit. | 
 
 | 9. Fill in cooling liquid. | 
 
 | 10. Warm up the engine, check the level of cooling liquid and tightness of covers of cast openings. |