| Cause | Remedy |
| The pump regulative valve is clogged. | Dismount the regulative valve, clean it through. |
| The pump presses to little oil (used rack). | Replace the pump. |
| Air in the hydraulic system. | Deaerate the system and fill it up with oil, check the leakproofness of pump’s shaft seal rings. |
HYDROSYSTEM
In the proper direction