Title: Service the sliding fifth wheel, tracks, stops, locking systems, air cylinders, springs, lines, hoses, and controls.
Course: Diesel Equipment Technology III (20107-III) > Section: Suspension and Steering: Frame and Coupling Devices

Servicing should include

- checking the air line to make sure that it is not damaged
- checking the locking system’s connection to the air cylinders and the springs
- greasing the tracks, locking pins, and holes.

Process/Skill Questions:

- Why is the fifth wheel a major part of a vehicle’s preventive maintenance check?
- What should be done if any damage is found on the fifth wheel or mounting plate?
- Why should the fifth wheel be kept greased?