Spindle wear?

[bwake]

The kits that you have marked beside both show to come with the spacer. This is a cone looking piece that is about 6" long and is place inside the hub after the first bearing/hub assembly goes on, followed by the outside bearing, nuts etc. This cone is what sets the end play to a very specific tolerance and won't show a reading with the dial indicator. It's almost .000 to +.001 end play.
1. Lubed bearing into the hub
2. Wheel seal installed into the hub
3. Hub assembly placed onto the spindle
4. Center cone slid into hub over spindle
5. Outer lubed bearing placed over spindle
6. Washers (if any), and nut screwed onto spindle. Torqued to specs and not backed off. 250-300 ft lbs if I recall correctly {check axle manufacturers maint. manual to be sure}.
7. Fill hub with gear oil through filler plug if available. If not, jack up the other side of the axle to force gear oil into repair side hub cavity.