COUPLING GOOSENECK TO PRIME MOVER AND RAISING TRAILER (Continued).
On prime movers equipped with a fifth wheel lockout device, ensure that the
lockout is disengaged before traveling off-road to prevent damage to equipment.
Unlock the fifth wheel by pulling the secondary lock handle (5) out and lifting up on the
handle until it locks in place. Then pull the primary lock handle (4) out and lift up until it
locks in place.
Slowly back the prime mover under the trailer, allowing the trailer to slide up the approach
ramps to the fifth wheel plate until the kingpin engages and locks in place. With the supply
(red/emergency) line disconnected from the trailer, the trailer brakes will be locked.