Hi just a new member to this site and am in need of some serious help. I was changing the crankshaft oil seal and everything went fine until putting the timing belt back on. Got the belt on everything aligned properly but now the tensioner will not tighten the belt. Spend all day yesterday trying to fix it but am at a dead end now. Any help would be greatly appreciated

 

a picture speaks a thousand words. (post pics)
an hydraulic tensioner will have a grenade pin you pull once everything's in place... to reset one you'll need an hydraulic press.