freightliner CENTURY CLASS S Driver Manual page 177

potentially affecting trailer brake or electrical sys-
tems.
6.
Hook up the trailer's electrical and air lines.
7. Remove the chocks from the trailer's tires.
Trailer Release
1. Apply the truck and trailer parking brakes.
WARNING
Do not use the trailer air supply for parking trail-
ers not equipped with spring parking brakes.
This applies the trailer service brakes only. As air
bleeds from the trailer brake system, brake appli-
cation 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 out dirt.
4.
Take the weight of the trailer drawbar off the
pintle hook.
5. Open the latch by first removing the cotter pin;
then lift up the lock and raise the latch.
6. Slowly drive the vehicle away from the trailer.
Fifth Wheels and Trailer Couplings
10.18