My hinges are at the top of the doors so different attaching method but not rocket science. My wife damaged 3 doors while pulling out from a filling station, smashed the top hinges flat as a pancake and I had to replace both pieces. I had to buy the male/female portions to fix and then repair the doors and repaint the whole area. I had $650 in the whole repar doing it myself. A shop would have charged $$$$$$.
Measure the width and the thickness of the hinge. Get the same size and cut to length.
Alignment will be important so that the latch will line up when you are done. What I would do is scribe when the hinge is mounted on the coach for future reference then remove the door and hinge. You might be able to use tape to define the location and remove when you are done. Do the same thing on the door, scribe (or tape) the location of the hinge on the door. Remove the old hinge and align the new hinge making sure it is located in the same location. You might get lucky and a couple of the hinge holes may line up, if not you'll have to drill.
The hinges may be riveted on, if so you can simply drill out the old rivet.
As long as you get the hinge locations in the same location the doors should align.
2002 Monaco Windsor 38 PKD Cummins ISC 250 8.3L
2005 Jeep Grand Cherokee w/5.7 Hemi