- Check of the filling (intake) main for leaks and rubber components condition
- Check of the engine intake air underpressure indicator and the electric circuit of "underpressure indicator - signal lamp"
- Check of function and cleanliness of the sealing surfaces of the automatic dedusting valve at the air intake cleaner
- Check of the turbocharger oil supply and outlet piping for leaks
- Check of the accelerator pedal, adjustment if needed
- Check of the engine exhaust brake switch at the accelerator pedal and adjust, if needed