Volvo VNL Operator's Manual page 327

322 Fifth Wheel Instructions
When the shoulder of the operating rod is
outside of the operating slot, raise the oper-
ating rod handle to its maximum upward
position.
Release the operating rod. The upper shoul-
der of the operating rod should now be in
contact with the plate casting above the op-
erating slot. The fifth wheel is now in the
lockset position and a trailer can be
coupled.
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