freightliner M2 Plus 2023 Manual page 216

Fifth Wheels and Trailer Couplings
3. Back up the vehicle until the drawbar eye is over
the pintle hook.
4.
Lower the trailer, until the drawbar eye rests on
the pintle hook.
5. Push the latch closed, then insert the lock pin (if
equipped).
6. Connect the trailer electrical and air lines.
NOTICE
Always make sure the connection hanger keeps
the trailer air hoses and electrical cables
positioned so that they do not rub on anything.
Rubbing may wear through hoses or cables,
resulting in air leaks, or exposed or broken wires,
potentially affecting trailer brake or electrical
systems.
Holland Coupling Trailer Release
WARNING
Do not use the trailer air supply for parking
trailers not equipped with spring parking brakes.
This applies the trailer service brakes only. As air
bleeds from the trailer brake system, brake
application is lost. This could allow the
unattended vehicle to roll away, possibly
resulting in serious personal injury or death.
1. Apply the tractor and trailer parking brakes.
2. Chock the front and rear tires of the trailer.
3. Disconnect the trailer air and electrical lines.
Plug the air lines to keep them free of dirt.
4. Open the latch by removing the lock pin (if
equipped), then lift up the lock and raise the
latch.
5.
Raise the mating drawbar above the pintle hook.
See Fig. 17.32, item 4.
6. Slowly drive the vehicle away from the trailer.
Premier Air Pintle Hitch Trailer
Hookup
1.
Chock the front and rear tires of the trailer.
2. Back up the vehicle until the drawbar eye is over
the pintle hook.
3. Lower the trailer, until the drawbar eye rests on
the pintle hook.
17.13
4. Connect the trailer electrical and air lines.
NOTICE
Always make sure the connection hanger keeps
the trailer air hoses and electrical cables
positioned so that they do not rub on anything.
Rubbing may wear through hoses or cables,
resulting in air leaks, or exposed or broken wires,
potentially affecting trailer brake or electrical
systems.
Premier Air Pintle Hitch Trailer
Release
1. Apply the tractor and trailer parking brakes.
WARNING
Do not use the trailer air supply for parking
trailers not equipped with spring parking brakes.
This applies the trailer service brakes only. As air
bleeds from the trailer brake system, brake
application is lost. This could allow the
unattended vehicle to roll away, possibly
resulting in serious personal injury or death.
2. Chock the front and rear tires of the trailer.
3. Disconnect the trailer air and electrical lines.
Plug the air lines to keep them free of dirt.
4. Raise the drawbar above the pintle hook.
5.
Slowly drive the vehicle away from the trailer.