Coupling & Uncoupling第 21 / 60 题
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
解析
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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