This video shows how I changed the serpentine and AC belt on the 2011 n63 x5 50i. Only removed the fan and unscrewed the turbo coolant expansion tank to access the alternator pulley.
Helpful video. One thing I didn't see: the tensioner should have an option for a 3mm pin to lock it in place so you don't need to hold tension while installing.
I did not install a new tensioner that does come with the pin. It was fast to just install the belt with the pulley bar than spend time looking for a nail to stick into the slot to hold it. If the tensioner were being replaced, then I would have definitely used the already supplied pin.
2k for my mechanic to change the ac compresser and belt and recharge the ac, the compressor is still moving but he thinks its probably stuck enough where it needs a new one etc, ugh... is it worth it to just try changing the belt? just some labor time. Whats the worst that can happen the belt squeeks and breaks again? tia
If the old belt broke because of your compressor stuck, then change the compressor. If the belt is still on and the compressor still works then there is no problem. If the belt is old and slipping or damaged, then change the belt.
