I also used the bar clamp, but did not drill any holes. I used it on edge with the thin 3 mm or so thickness going over and under two bolts on the fan pulley I could cold it still and used a plain thinner crescent wrench to undo the bolt. My car was sqeaking for over a year, then I got scared a bearing was gonna give so I decided to order all the pulleys and tensioner and belts. Its so easy I put on JUST the belt to see if is still made noise and all the noise went away. I am going to just keep the pulley and tensioner for later since as the BMW service guy told me these parts can go 100,000 miles. I have 56000 miles on my x5 3.0. And my belt had cracks all over the inside, these belts stretch and crack and then will squeal,,,,so don't assume everthing is bad under there. Ironically the AC belt looked brand new with no cracks at all. But i changed it anyway. AutohauzAZ has the original contitech belts very inexpensive. Also when under there look at your power steering lines. the crimp on connector on mine was a little loose and there were signs of slight leak.. the hose was fine so I added a generic clamp next to the crimp on one and believe I fixed that leak. You will need to take off the bottom plastic cover with many screws but its worth it to look around and also when getting the fan shroud off and on you can make sure the bottom tabs are all in their slots.