- Alignment of tractor and trailer
- inspect the area in front of the trailer for any hazards
- align the tractor in front of the trailer
- slowly reverse towards the trailer and align the centre of the fifth wheel with the kingpin
- stop the tractor when the fifth wheel is just ahead of the trailer, touching the trailer or slightly under the trailer, but not against the kingpin
- Tractor inspection
- air lines and electrical cord are in good condition and properly secured
- fifth wheel horns are tilted down and the jaws are in the unlocked position
- fifth wheel is securely mounted to the frame and there are no damaged, missing or loose parts
- if equipped with a sliding fifth wheel, confirm the slide pins are in the locked position
- there is adequate grease on the surface of the fifth wheel
- Trailer inspection
- air and electrical couplers are in good condition and not damaged
- kingpin and apron should not have any excessive wear or cracks
- kingpin is aligned with the opening of the fifth wheel jaws
- check the height of the trailer in relation to the fifth wheel
- pins for the sliding trailer axles are in the locked position
- trailer is secure against movement before coupling
- there are no hazards or obstacles that could damage the trailer when driving away
- cargo is secure
- Coupling of fifth wheel to kingpin
- release or dump the tractor air suspension and slowly reverse under the trailer until the fifth wheel is fully under the front of the trailer, but still ahead of the kingpin
- restore the tractor air suspension to its normal height
- continue to reverse slowly until you hear and feel the fifth wheel lock around the kingpin
- Confirm fifth wheel is locked and secure
- perform a minimum of two tug tests
- visually inspect fifth wheel to ensure it is properly secured to trailer
- Connect air and electrical lines
- connect electrical cord to trailer and confirm normal operation of all trailer lights
- connect air lines to the trailer
- supply air to the trailer by pushing in the trailer supply valve (red button)
- ensure the air pressure gauges show normal pressure levels and the trailer hand valve operates properly
- Trailer air suspension
- ensure air bags have inflated
- Raise landing gear
- make sure both legs come up and stow the handle into its retainer
- Check operation of trailer brakes
- drive forward slowly and apply the trailer service brakes using the hand valve
- make sure all trailer wheels are turning
Professional Driver's Handbook
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