While your at it you might want to check the pinion cup and shaft splines. Mine made a little noise just before I stripped them out on a hard shift into second.
Already had the rear end apart and did the usual o-ring/thrust washer bit, new wheel bearings...double row change on the left, cleaned/lubed the driveshaft and pinion cup...that looked real good. After it was all back together, the wheel spun real smooth, no noise except for a slight scuffing from new brake pads. When the owner took it for a test ride he was pleased, said it had never run like that before. Then when he left he booked it pretty good, by the time he got home he could hear something. That's when I posted what we heard, sure sounds like a yoke but won't know until next week...headed out of town until then.