Carefully clean all excess lubricant from the inside of the floating element body.
Holding the floating element body vertically, insert the iris and
carefully guide to the end. Align the actuator pin with the slot in the end
of the floating element body.
You may have to attempt this several times because the iris assembly comes apart easily.

While holding the tool and iris tight to the end,
rotate the pin to the mark previously made on the floating element body.