Our new gates worked great when first installed, but gradually over the winter the one we use the most became harder and harder to operate. Finally, I couldn't even close it from inside the pasture.
The top hinge pin was nearly out of the hinge and the bottom hinge had slid down on the gate. This left the hinge side of the gate sitting on the ground. To close the gate one had to back up the the gate, lift the gate up onto the latch and then push with your entire body to close it.