When it comes to 4x4’s, (Jeeps, trucks, toys, buggies, etc.), it’s as simple as a crescent wrench and a creeper. It may sound a bit simplistic, but it’s about getting under the rig and touching and checking for lose, broken, about to break or leaking stuff! Find it before it’s a problem. For side by sides, ATV’s, snowmobiles, etc., it’s more about the touching and looking, but the idea is the same.
Use a simple large Crescent wrench to check all important nuts. If they appear to be loose, use the Crescent or get out the right tool; but get it tight! If something is supposed to be torqued to specs, use a torque wrench and do it right. The handle of the Crescent can be used to pry and nudge things like long arm connections and Heim/flex joints. If you have unusual movement, figure out why and fix it.
For smaller “toys” that you can’t get under, something as simple as cleaning and touching the parts and connections can help you find lose or worn parts. Be sure to look for welds about to give up the ghost also. I like to clean my toys to the point of ensuring I touch about everything important, or at least give it a good eye‐balling.
An online parts seller friend of mine, Mike Monahan, known as Parts Mike (http://www.partsmike.com) says that in his experience it is steering components that fail the most often on 4x4’s. “Stock steering linkage and parts are not engineered to withstand the stress of bigger build ups and tires,” says Parts Mike, “and the best solution is to buy the right stuff and improve what the factory gave you.”