In order to accurately check the repair performed on a hydraulic power steering, in addition to the test processed with our test bench a good practice is also to test the rebuilded units with low pressures and air instead of high pressures and oil. This method can be used for a quick preventive test on a hydraulic power steering as well, provided that using air instead of oil also allows to make a test without getting the product dirty. For this reason we offer a new completely redesigned Z-15002 sealing test system to introduce the new digital control and measurement technology