MEMO

Operating the trailer

Coupling and uncoupling the trailer

Coupling and uncoupling properly can ensure safe operation of both the tractor and trailer, and it prevents potential risks during trailer operation.

Warning

• Incorrect coupling and uncoupling may result in serious injury or death.

• Do not attempt to couple or uncouple the tractor and the trailer at an angle that may cause jackknifing. Doing so may damage the trailer’s structure.

• To prevent serious injuries and damage to the trailer or nearby objects, use a spotter during coupling or uncoupling.

Caution

Use chock blocks or apply the trailer brakes when uncoupling or coupling the tractor and trailer on the road or in the terminal area. Also, use chock blocks for unusual conditions.

™ NOTE

• Additional lighting is required if coupling and uncoupling are performed in low-light conditions.

• Coupling and uncoupling procedures may vary based on the specific tractor’s models.

Coupling WARNING

Improper coupling between a tractor and a trailer may cause serious accidents, which may result in property loss, serious injury, and death. Ensure the following before each trip:

• The trailer has been properly coupled with the tractor.

• The tractor has the sufficient capacity and specifications to safely tow the trailer.

Operating the trailer

Preparations before coupling

Follow the instructions on inspecting the trailer and tractor below before coupling.

Inspecting the tractor’s fifth wheel and trailer’s kingpin

Exit the tractor and inspect the fifth wheel and kingpin.

• Check for corroded, damaged, or missing parts (plate, release lever, jaw, and fasteners) on the fifth wheel.

• Check if mounting to the tractor is secure.

• Check if the fifth wheel plate is in the correct position for coupling.

- The fifth wheel is tilted down at the rear.

- The jaws are open.

- The release lever is in the automatic lock position.

• Lock the fifth wheel in place if your fifth wheel is the sliding type.

• Check if there is enough lubricant on the plate.

• Check the kingpin for damage.

Inspecting the area around the trailer and tractor

Inspect the area for proper coupling and exterior of the trailer.

• Check if the area is level and firm enough to support the landing gear.

• Check if the trailer parking brakes are applied.

• Check if the cargo is properly secured.

Connecting the tractor to the trailer

1. Enter the tractor and release the parking brake.

2. Back up the tractor slowly and approach the trailer with the tractor as straight as possible.

- Ensure the tractor is aligned with the trailer. You should have the tractor roughly in a straight line with the trailer.