Coupling Trailer To Truck
^ WARNING
Uncoupling Hazard. Trailer must be at the correct height to couple to truck. Verify trailer is at the proper height before coupling.
Figure 3-4 – Coupling Truck to Trailer
7. Verify that the kingpin and fifth wheel are aligned. 8. Slowly back the truck keeping the kingpin aligned with the fifth wheel. Continue backing until the fifth wheel locks firmly on the kingpin. Attempt to pull forward as a test to verify the fifth wheel is locked. Do not attempt to move the truck and trailer at this time. Apply the truck parking brake and place transmission in neutral. 9. Inspect the coupling. See Figure 3-5. Verify there is no space between the kingpin plate and the fifth wheel. If there is space, the kingpin may be on top of the fifth wheel jaws. Raise the trailer with the landing gear, pull the fifth wheel release lever and pull the truck ahead. Repeat steps 6-9 again to couple the trailer correctly.
Figure 3-5 – Fifth Wheel Checks 10. Verify the fifth wheel jaws (A) have closed around the shank of the kingpin and the fifth wheel lock lever is in the locked position. See Figure 3-6.
Figure 3-6 – Fifth Wheel Jaws Closed Around Kingpin Shank
11. Inflate the truck suspension (if equipped).
15
Made with FlippingBook Annual report maker