A somewhat elevated Lift the trailer's landing gear a little bit. To make sure the trailer is attached to the tractor, slowly pull the tractor forward while the trailer brakes are still locked.
How should you test the tractor-trailer connection for security?
- When the trailer brakes are locked, slowly advance while shifting into low gear, then take a close look.
- Verify that there is no room or gap between the fifth wheel and the trailer's bottom. Make sure the fifth-kingpin wheels is placed correctly. Make certain the kingpin's shaft is completely encased by the fifth-wheel jaws (not onto the head of the kingpin). Make sure that the locking lever (if equipped) is locked.
- When the tractor backs beneath the trailer, it will lift slightly, indicating that it is at the proper height.
A somewhat elevated Lift the trailer's landing gear a little bit. To make sure the trailer is attached to the tractor, slowly pull the tractor forward while the trailer brakes are still locked.
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