1. The maintenance instruction
2. Maintenance service
3. Engines
4. Fuel system
5. Systems of greasing, cooling
    5.1. Greasing system
      5.1.1. The oil pallet
      5.1.2. The oil pump
      5.1.3. An oil radiator
      5.1.4. Check of pressure of oil
    5.2. Cooling system
6. Release system
7. Coupling
8. Transmissions
9. Power shafts
10. A steering
11. Suspension brackets
12. Brake system
13. A body
14. An electric equipment

5.1.4. Check of pressure of oil
1. To remove the gauge of pressure of oil.
2. To connect a manometre for pressure check.
3. To start the engine and to warm up it to working temperature.
4. To write down values of pressure and to compare to what should be.
5. To remove a manometre and to establish the pressure gauge.
6. To connect an electric socket of the gauge of pressure of oil.