PullRite OE Series - Fifth Wheel Plate Operation

9
2.09.21.RH.rev A
FIFTH WHEEL PLATE OPERATION
A better understanding of the plate’s locking and un-locking operation can be obtained by viewing the working parts
from the underside of the plate. The Fifth Wheel Plate can be removed and turned over to view the workings of the
mechanism. When operating the Fifth Wheel Plate manually, please be aware that the Lock Jaw Assembly has more
movement capability when there is not a king pin present to center the assembly. Refer to the illustrations below for part
identication (#3601 plate pictured below).
1. To open the locking mechanism, lift and pull the Release Handle out until the Lock Catch engages the Lock Jaw
Assembly (see illustrations on the next page)
2. As the trailer king pin moves into the plate, it will contact the Lock Lever, forcing the Lock Catch to disengage the
Lock Jaw Assembly, allowing the Lock Bar Spring to close the Lock Jaw Assembly behind the King Pin. The King Pin
must be fully engaged in the plate slot or the Lock Jaw Assembly will not seat properly, and the Handle Catch would
not then engage the inner side wall of the plate. To be certain that the Lock Jaw Assembly has closed fully, attempt to
pull the Release Handle without rst lifting it.
NOTE: Please note that when lifting the handle to clear the side wall of the plate with the handle catch, it will be
necessary to pull with some force to begin the Lock Jaw rotation. Merely lifting the Release Handle will
not cause the Handle to “pop” open and rotate the Lock Jaw to the open position.
OPEN
-
UNLOCKED POSITION
LOCK JAW
ASSEMBLY
LOCK BAR SPRING
CLOSED
-
LOCKED POSITION
LOCK BAR
LOCK CATCH
LOCK LEVER