Hello guys, I bought a volvo v70 from the year 2008 that made loud noises in the servo steering from the beginning. Diagnosis in the workshop was defective pump. As a result I installed a new pump ordered from volvo and made another oil change, unfortunately the smell is still there! After starting the engine it takes about 3 seconds until the howling starts in the balance tank is immediately foam… I checked all hoses and dogar replaced the pressure switch without success. The statement of my volvo dealer on site is to exchange the entire servo system! Other workshops are at a loss! I hope someone can help me here