All gates eventually sag or develop other problems. A metal gate shares come common problems with other gates, yet it also has its own set of problems. Two common problems that are easy to resolve are a sagging gate and a broken gate hinge. Other problems, such as broken wires or cross braces, may take more effort to repair. If you're a do-it-yourselfer, you can repair most metal gates with a few tools, some supplies and a bit of effort.
Splice any broken wires on the metal gate with a double loop of smooth, bendable wire. Connect both sides of the break with the doubled wire and twist the ends of the wire together. Insert the claw end of the hammer into the smooth wire loop. Twist it several times to draw the wire tighter. Pull the hammer out of the wire, and then turn the twisted excess wire back on itself.
Weld metal pieces back on to the gate if they are broken. Add scrap metal if necessary to make the repair. If the metal gate needs additional bracing, weld diagonal brace pieces from the top of the hinge side to the bottom of the latch side of the gate. If the gate is a long one made in sections, add a brace for each section. Spray paint the gate when finished to prevent rust.
Inspect the gatepost supporting the gate. Make sure it isn't showing signs of rot or deterioration that can allow the gate to sag. Replace the gatepost if necessary. Also inspect the gatepost holding the latch. Although it doesn't support the weight of the gate, it should also be in good shape.
Replace a broken gate hinge. If it's not broken, tighten it on both the gate and the gatepost.
Adjust a sagging gate by adjusting the hinge bolt. Determine where the gate is lowest. For example, if it's dragging on the latch side, tighten the upper hinge. Remove the gate from its hinge. Rotate the hinge bolt one full turn and replace the gate to its hinges.
Align the latch with the gate. If necessary, reset the latch closer to the post or farther away so that the gate closes properly.