Coupling & UncouplingQuestion 21 of 60
What is the purpose of the safety catch on many fifth wheel release levers?
a.It must be released before the fifth wheel handle can be pulled to unlock, preventing accidental uncoupling
b.It greases the fifth wheel automatically
c.It holds the trailer brakes on
d.It raises the landing gear
Explanation
Many fifth wheels have a safety catch over the release lever that must be moved before the handle can be pulled. This prevents the fifth wheel from unlocking accidentally while driving. You release the catch only when you intend to uncouple.
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Related questions on this topic
- What should you check about the fifth wheel plate before backing under a trailer?
- 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?
- If the trailer is too low when you back under it, what is the likely result?
- Why must you supply air to the trailer and check for air leaks before moving after coupling?
- When should you chock the trailer wheels during coupling or uncoupling?
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