When getting your camper out for the season, don’t forget to check the running gear (axles, springs, spring hangers and spring shackles.) The best time to do this is when you have your bearings lubricated. High mileage units in particular should have the spring shackles checked annually. Spring shackles are the narrow metal strips that attach your springs to the hanger or equalier and of course to the trailer. Spring shackles allow the necessary movement from the springs flexing and help to keep all wheels working together. Due to normal movement and the lack of lubrication, the shackles will wear their mounting bolts holes egg shaped which weakens them.