BMW E36, E46, E39 Belt & Pulley Failure.
This video identifies why and when to replace serpentine belts, idler pulleys, and tension pulleys on BMW engines, the engine shown in this video ...
BMW Idler Pulley Removal : DIY [ How To ] /// 330i (E46)
How to remove and replace a worn out idler (deflection) pulley on a BMW 330i (E46) NOTE: You'll need to loosen/remove the main Serpentine Belt ...