I have had the same problem.My tracker is an 89.My brgs are the type that you have to pack.
I used the old tighten then back off a little method. Within 3 trail rides the left front is " GONE ".
89 is NOT ? A year that has to be torqued ?
Randy
even when using the tighten and back off method it is essential to retighten/torque the bearings, I have never just backed off the bearing retainer on any vehicle. Tighten first to seat the bearings, back off and then retighten to the proper torque, some vehicles use a torque upon the bearings and other vehicles use a resistance to rotation of the wheel to set the torque.