Replace seals when repack bearings?

[Ldub]

...

After tightening the hub nut using the hub nut tool, rotate the hub assembly several times, forward and back. You will then need to loosen the hub nut and
rotate the hub assembly forward and reverse several times. Repeat the tightening, rotating, loosening, and rotating sequence several more times. This action
distributes the grease and seats the bearings. Tighten the hub nut one more time. Attach a spring scale to one of the wheel studs and pull. I started them at 3
o'clock (forward preload) and at 9 o'clock (reverse preload) and pulled straight down to measure pre-load. The Isuzu shop manual shows the mechanic pulling
from the 12 o'clock position. Adjust the tightness of the hub nut until your preload reads between 2.6lbs-4.0lbs for old bearings and a new seal or 4.4lbs-5.5lbs
for a new seal and new bearings. I tried to obtain these readings in both forward and reverse motion. Be sure to do this without the brake caliper installed.

He splains it much better than I do..................

[LiquidVX]

...

After tightening the hub nut using the hub nut tool, rotate the hub assembly several times, forward and back. You will then need to loosen the hub nut and
rotate the hub assembly forward and reverse several times. Repeat the tightening, rotating, loosening, and rotating sequence several more times. This action
distributes the grease and seats the bearings. Tighten the hub nut one more time. Attach a spring scale to one of the wheel studs and pull. I started them at 3
o'clock (forward preload) and at 9 o'clock (reverse preload) and pulled straight down to measure pre-load. The Isuzu shop manual shows the mechanic pulling
from the 12 o'clock position. Adjust the tightness of the hub nut until your preload reads between 2.6lbs-4.0lbs for old bearings and a new seal or 4.4lbs-5.5lbs
for a new seal and new bearings. I tried to obtain these readings in both forward and reverse motion. Be sure to do this without the brake caliper installed.

He splains it much better than I do..................

This was perfect. I took the wheels off and and redid the bearings and now there is no noise and it feels great. Thanks for all the help guys.