What are a few items you want to check while between the tractor and trailer?

The frame needs to be checked for cracks, bends, illegal welds, that it is secure, and mounting bolts. The catwalk needs to be in good condition with all mounting bolts in place. Exhaust needs to be secure; all pipes and connections need to be secure and free of leaks. The driveshaft needs to be properly mounted, tight sand secure, u-joints in good condition, and move freely, and there is no excessive play.