Gerald -
Lots of times the slop is only in the arm bushing and can be taken up with a few well placed washers , but may be have to remove it to see if that's what it is . Most of the big units such as yours have a grease zerk in the idler arm bushing that gets neglected , hence the wear . Make sure that the snubber , or back-lash preventer (if so equipped), is adjusted proper also ; if not , that will chew up a belt right quick also .
Dave
Lots of times the slop is only in the arm bushing and can be taken up with a few well placed washers , but may be have to remove it to see if that's what it is . Most of the big units such as yours have a grease zerk in the idler arm bushing that gets neglected , hence the wear . Make sure that the snubber , or back-lash preventer (if so equipped), is adjusted proper also ; if not , that will chew up a belt right quick also .
Dave