289C front idler problem

Im running 9 of the 289C's down in central texas and i keep having problems with the bearings on the front idlers going out . ive replaced 4 of em in the last week in a half n probably 20 in the last 3 months. i intially thought that we were running the tracks to tight so i loosened them up to where there was about an 2" of slack (was at about 1") when i did that, they didnt go fail as fast, but then the tracks come off to easly n putting those tracks back on is getting really old even...

289C front idler problem

289C front idler problem