- the assistant should rotate the steering wheel in both directions from lock to lock, briefly holding the steering wheel in extreme positions. In this case, the maximum pressure is formed in the system, which allows you to determine the source of leakage;
- from below the vehicle, check the steering gear area. Having removed the covers from the side of the steering mechanism, check the points of connection of the steering rods, the O-rings of the rack, the power steering pump and the points of connection of the hoses. Oil stains in these places indicate leaks.