I didn't take the advice to strongly as they are a VW gas person. And diesels are a whole different ball game.But still need some info on what I asked about the vacuum pump.
Electric pump's been used on a lot of diesels, and no few gassers, but they are a solution looking for a problem on a VW-D.The late style pump works for decades and handles the brakes and HVAC easily. Plus you'd have to plug the hole.