I have an edit to the link above, it should help to make it easier to mount the new carrier.


11. The old carrier can be removed by playing with it such that it drops down behind the door edge lock mechanism.

12. The new carrier can be moved up into position without having to bend the cable all out of shape. Play with it until you get it. Perhaps straight up from below.

My Edit
If you set the carrier as if the door handle is pulled, wedge your non-marring tool to hold the carrier open, then you can more easily place the carrier into the door so that the screws align. Set the carrier nearly into place and use pliers to pull the handle attaching place outward. Put your non-marring tool through the access hole for the 4mm screw that holds the door lock in place and wedge it to hold the carrier open. The reason is that there is a layer of sheet metal at the top of the door that the carrier stops against, so you have to move the carrier away so that the mounting locations fit flat so that the screws can be put in.


13. With new carrier in place, make sure the carrier metal fits into the small cutout on the outside door and also that the screw hole on the other side lines up.

More tips
This step (Step 13) is a PITA if you do not wedge your non-marring tool to hold the carrier open. You are going to need the carrier held open in a minute or two anyway because it has to be open in order to install the door handle.


14. Insert and tighten the sheet metal screw first.