(1) Insufficient fuel volume of the gear oil pump, oil leakage from the gear oil pump, or jamming in the filter screen of the rotary water tank, slow turning is easy, fast turning is heavy. (2) When turning the steering wheel, the cylinder either moves or does not move. (3) The oil level of the rotary water tank is insufficient (4) The force of the safety valve spring is weakened, or the steel ball is sealed, turning with a light load is light, turning with increasing load is heavy. (5) The viscosity of the oil fluid is excessively high (6) The one-way valve of the steel ball in the valve body fails, turning the steering wheel quickly and slowly is difficult, and the rotation is powerless (7) Oil leakage from the turning system, including internal leakage (from the hydraulic cylinder), and external leakage
(1) Check whether the gear oil pump is working normally, and clean the filter mesh. (2) bleed air from the system and check the gas entry into the oil suction pipe. (3) Filling with oil to the specified oil level height (4) Cleaning the safety valve and adjusting the pressure of the safety valve spring (5) Applying the specified oil fluid (6) Care and maintenance or replacement of spare parts (7) Checking and eliminating oil leakage points