cl500 year 2000 pulsation damper w215

[nicola185]

Im getting a humming noise in the cabin that speeds up with the revs, also when i raise the car with the dashboard switch the noise goes away for a few seconds then comes back so am going to replace the pulsation damper as this seems to be a component that might cause this droning noise, you don't hear it outside the car only on the inside, I have read quite a few posts on this site that suggest the pulsation damper is the most likely problem, i have purchased a new pulsation damper from Mercedes the guy there also gave me the works procedure to carry out the job but i don't know how to do a rodeo test or how to bleed the hydraulic system, help