Trying to replace entire tensioner assembly(16620-0P030) on 3.5L 2GR-FKS engine. Looking at new tensioner assy, there are 2 front facing bolts for mounting, but there is also a threaded hole facing towards the AC compress/alternator. I have removed the 2 bolts on the front pulley side of tensioner assy, but am unable to pry the assembly out. It appears the tensioner is still being held in by something. Looking for info regarding what the other threaded hole in tensioner assy is for. Does one of the AC compressor or alternator bolts thread in there? Thanks for any help.