Because of the uncertainty here and known bearing failures on these, I highly recommend you take out both bearings, wash them and inspect them. Then, new or old, repack. Taking your rotor off is no trouble. Just tap the springclips out the back of the brake caliper and hang it off a coat hanger wire from the coil spring. With outer bearing removed, pull the rotor right off. You were already 80% there. Look for discoloration of the races or rollers indicating heat. I changed my inside pass side brg two years ago. I thought my rotor was warped because the rig pulsed when braking. Inner bearing was blued and bad. It only cost less than $10 at Autozone. It was a namebrand bearing too (like Fafnir or NTN). New seal was about a buck. Be sure to get a new seal. Be sure to have good brg grease. If you have no other ride, buy the parts first and leave them in the box. You'll probably need it, but could take it back unused. Getting to the bearing = 10 minutes. In the end, reset the wheel nut by going a little tight, back loose, then just at snug.