[W140 S320 Silver]

My 1992 S320 has vacuum door but it doesnt work, Ive tracked a leak down to the lumber bags which Ive fitted new ones (£26 each). Does any one know where the resiviour is, as I need to trace the air line back to its sourse. Im sure the other end has come off as well. Does any one have a manual for this car?

 

[W140 S320 Silver]

Pump

Thanks Very Much, I spoke to my mechanic and he said the relays get lazy inside the unit. A project for the weekend!