The Fifth Wheel on a commercial truck is one of the most critical parts for the safety of the vehicle, and also one of the most misunderstood parts.

The most important thing to keep in mind while you inspect your fifth wheel is to be safe.  While moving a truck, disconnecting and trailer, remember to watch landing gear, air hoses, electrical cables, and most importantly the people around you.

First step in the inspection process is to steam-clean the fifth wheel, clean the top plate, brackets, slide plate, and mounting.  Using a flashlight or trouble light inspect the fifth wheel.  look for wear on the jaws and plate. 

Test the jaws

1. Latch the fifth wheel to a trailer as usual.
2. Set the Trailer Brakes
3. With a second person helping have them stand where they can see the fifth wheel as you move the truck back and forth slightly
4. Have your helper look if the plate moves relative to the trailer.  If the plate does move the jaws may be worn. 

If the jaws are worn, you may be able to adjust your fifth wheel.  It also may need rebuilt.  We suggest contacting your local dealer to have them adjust, or rebuild your fifth wheel.

For a parts list of Fontaine Fifth Wheel parts or Holland Fifth Wheel parts , check our company www.Class8TruckParts.com