Servicing should include inspecting and making necessary adjustments.

Servicing should include the concept that 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 pushing the tractor in a straight line. 

ASE 1: IV. Suspension and Steering: H. Frame and Coupling Devices (P-1)

Process/Skill Questions: