Title: Service the fifth wheel, pivot pins, bushings, locking mechanisms, and mounting hardware.
Course: Diesel Equipment Technology III (20107-III) > Section: Suspension and Steering: Frame and Coupling Devices

Servicing should include inspecting and making necessary adjustments.

Fifth wheel jaws periodically need adjusting to take the slack out between the pin and fifth wheel. The fifth wheel needs to be kept lubricated so the trailer will not bind metal against metal, which could impair turning and push the tractor in a straight line.

Process/Skill Questions:

- How often should the fifth wheel connection be checked?
- How can the mounting bolts be checked with a hammer to determine whether the bolts are connecting the fifth wheel plate to the tractor frame?