HELP INSTALLING A HEATER BOX

There is a rod that pulls that in place. 67-72 it hooks on the metal body and fastens under the box with a 5/16 headed screw. 73-76 its inside the door. Its basically a J hook on the top and a 90 with a threaded hole on the bottom. The J hook is usually bent when tightened. When reinstalling bend it back to a 90 and it will pull the box up and bend to its final angle when tightened. Keep the fan bolts lose until after you tighten the J hook