front rear replacement

Price a reman (parts and labor) at Peterbilt dealer. Use estimate for leverage in the purchase price. Then get it done cheaper after the purchase.

 

A complete axle assy would come from a local used truck parts supplier, but not as a reman unless you requested them to reman it and payed accordingly.

Replacing the complete axle assy is usually viewed as cost prohibitive (foolish) unless the axle housing is cracked or bent.

 

You can buy a reman power divider diff to replace yours and only 5-6 hours labor to change it. That would be the cheapest, fastest route to go.

 

You're not losing $2000 a week, you're not earning $2000 a week BUT you're also not spending money on fuel and other variable expences.

 

I would first check to see if the diff has oil in it and if it does, the condition of the oil. It's possible that it's been neglected and the diff is not full and this would cause overheat.

If you find that you need to do the diff, get a reman that is ready to go in with a warranty and pay a shop $600 to put it in and get back to work with it. You'll suffer very little lost time going this route.

If you haven't done one, now is not the time to start with your business at stake.