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If the fifth wheel release handle will not stay in the locked position after coupling, what should you do?
- A.Ignore it if the tug test felt firm once
- B.Grease the handle until it sticks in place
- C.Tie the handle down with wire and drive carefully
- D.Do not move the combination; find the cause, which may be a misaligned kingpin or damaged jaws, and have it corrected
Correct answer
D. Do not move the combination; find the cause, which may be a misaligned kingpin or damaged jaws, and have it corrected
Why
A handle that will not latch is the coupling telling you the lock is incomplete. Wire and hope are not a repair, and a trailer that separates in traffic can kill people in following vehicles.
Manual topic: Combination Vehicles - Coupling Faults · From the General Knowledge practice bank (GK-144).