Our garage refrigerator door would open and close, but wouldn't stay closed unless you lifted up on the door while you closed it.
I skimmed through the YouTube video Appliance Parts Pros attached to the receipt email to get an idea of what I was up against. It took about 10 minutes to replace the lower hinge.
Instead of using wood blocks to keep the door up, I slid an automotive jack under it and lifted it enough for support. There were four 8mm hex head bolts that held the cam and hinge (two on the refrigerator and two on the door). It was as simple as removing the old hinge and installing the new one in it's place.
Now the door stays closed like it's supposed to.