Did this today...piece of cake.
- Mount one hinge with 3 bolts, mount the other side with just the lower front bolt so it can swivel downwards and back.
- Place the tension rod with the T head on the side with 3 bolts and slide the other 90 degree end into the other side, it will be easy because this side is rotated down to relieve tension.
- Rotate the hinge and install the other 2 bolts.
- Install the 90 degree end in the originally full bolted hinge and then twist the other with the T head until it can fit into the hole in the hinge. It will require some force bit its pretty easy.