Coupling & UncouplingQuestion 12 of 60
What should you do with the air lines and electrical cord before pulling the tractor away from the trailer during uncoupling?
a.Leave them connected and let them stretch off
b.Cut them if they are stuck
c.Wrap them around the kingpin
d.Disconnect them and hang or store them so they will not be crushed or dragged
Explanation
Before pulling the tractor clear, disconnect the air lines and electrical cord and secure them so they are not damaged. Hang the glad hands on dummy couplers or dead-end them to keep dirt out. Leaving lines connected can tear them apart when the tractor drives away.
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Related questions on this topic
- Before supplying air to the trailer, why should you check the trailer brakes are set?
- When you push the trailer air supply valve in (supply air to trailer), what should happen?
- During uncoupling, when should you lower the landing gear?
- When uncoupling, what does pulling the fifth wheel release handle to the open position do?
- After unlocking the fifth wheel jaws during uncoupling, how should you move the tractor?
- Why is it important that the kingpin be properly locked, not just resting on the closed fifth wheel jaws?
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