Next-level Skill: Repack a Wheel Bearing
Maintain your trailer’s wheel bearings annually (or every 10,000 miles) to prevent breakdowns on the road
. TAKE OFF THE TIRE
Jack up the trailer and remove the tire from the axle. Use a hammer and a flat screwdriver to remove the dust cap. You’ll see the castle nut, which is held in place with a cotter pin. Using pliers, pull that pin and spin off the castle nut. Next, pull the wheel hub toward you. The outer bearing should slip off the axle.
. GET GREASY 2. BREAK THE SEAL
Pull the wheel hub off completely. At this stage, gently remove the inner-bearing seal and inner bearing. Be careful not to damage the seal during this step. You can get a replacement if you do, but do not reinstall a damaged seal. If the seal is rusted to the hub, use a little WD-40 to lubricate it. Clean each bearing with brake cleaner. Then, dispense a big blob of high-temperature grease made specifically for wheel bearings into your hand. Wipe the grease into the gaps between the cage and rollers. Completely fill the cage of each bearing with grease, and reinstall everything in reverse. —T.H.