Coupling & UncouplingQuestion 18 of 60
What should you check about the fifth wheel plate before backing under a trailer?
a.That it is painted the correct color
b.That it is properly greased to prevent steering problems and reduce friction
c.That it is completely dry
d.That the jaws are already closed
Explanation
The fifth wheel plate should be properly lubricated with grease to reduce friction between the trailer and tractor. A dry fifth wheel can cause steering problems and hard, jerky turning. You should also confirm the jaws are open and the fifth wheel is tilted down before backing under.
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Related questions on this topic
- Why is it important that the kingpin be properly locked, not just resting on the closed fifth wheel jaws?
- When raising the landing gear after coupling, what should you be aware of regarding the crank handle?
- Why should you use two low-pressure gears when starting to raise loaded landing gear rather than high gear?
- Before coupling, why should you inspect the area around and under the trailer?
- Which of the following is the correct sequence when coupling a tractor and trailer?
- What is the purpose of the safety catch on many fifth wheel release levers?
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