Okay I need help. I have the new belt, the old one is trashed. but I have another issue. How do you get the tension to release? The Tension adjuster (
http://catalog.peachparts.com/ShopByVehicle.epc?q=&yearid=1990%40%401990&makeid=63%40%40MERCEDES+BENZ%40%40X&modelid=6194%3AEB|608%3AED|10000010%3ASM|847%3AMBC|1490%40%40300E+2.6&keyword=tensioner&subcatid=P:241024@@Acc.+Belt+Tension+Adj.&mode=PA ) is broken... Just flops around and I can get an allen key in there but all it does is loosen the wheel. What am I doing wrong?