What are the causes of steering system failure?

[McPaislee]

Common failures in hydraulic steering systems include heavy steering; steering wheel deviation; self-rotation of the steering wheel, unable to return to the neutral position; severe shaking of the steering wheel; no dead point in steering wheel rotation, etc. The common causes of hydraulic steering system failures are as follows: 1. Insufficient oil suction. The oil tank is short of oil or the oil level is insufficient, causing the oil pump to fail to draw oil. 2. Oil pump failure. Excessive wear of the oil pump, excessive internal leakage, and reduced volumetric efficiency result in the oil pump supplying less oil than the nominal flow rate of the steering gear during system operation, preventing the system pressure from building up. 3. Failure to install the manual steering check valve, debris lifting the check valve steel ball causing poor sealing between the ball and the valve seat; the check valve steel ball falling between the valve sleeve and the valve body ring groove, leading to improper closure of the check valve during power steering, connecting the inlet and outlet oil L4.