Title: Lubricate all fifth-wheel grease fittings and plates, if applicable.
Course: Diesel Equipment Technology I (20107-I) > Section: Preventive Maintenance and Inspection: Servicing the Frame and Fifth Wheel

Lubrication should include

- cleaning of all previous grease and debris
- following manufacturer recommendations.

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

Process/Skill Questions:

- Why would fifth-wheel manufacturers approve of a lube plate made from high-density polyethylene?
- What types of grease should be used to lubricate the top of a fifth wheel?
- How often should a fifth wheel be cleaned of old grease and why?
- Why should a fifth wheel lifted from the rear and released drop down so the rear is always lower than the front?
- What is the purpose of a lubrication disc used on a fifth wheel?