1999 Ford F350 Ford Rear End Torque Specs

I have a 1999 Ford F350 with a 7.3 diesel and a 6 speed trans. The truck is 2 wheel drive and is not a dually. I believe the rear end ratio is 3.78.

I pull a heavy trailer with the truck (18,000 lbs)

I have a noise coming from the rear end and want to start by checking the rear wheel bearings.

What are the torque specs for the rear wheel bearings on the truck?

Ken