Chapter two icon right

The basic steps in uncoupling a semi-trailer are as follows.

  • Park the tractor and trailer in a straight line. 

  • Secure the tractor with the parking brake or maxi. 

  • Set the trailer brakes. If you have only one block, place it to the front of the trailer wheel. If you have two blocks, place them to the front and rear of the trailer wheel. 

  • Lower the landing gear. 

  • Disconnect the electrical connection and air lines, and then unlock the fifth wheel. 

  • Secure the electrical connection and air lines to the tractor. 

  • Move the tractor ahead slowly until the fifth wheel almost clears the trailer. 

  • Stop and check that the ground and landing gear support the trailer. 

  • Move the tractor ahead slowly until the fifth wheel completely clears the trailer.

Coupling and uncoupling pintle hitch attachments

 

 



Pintle hitch with hook and eye

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