NATDA Magazine Sept/Oct 2015 - Page 74

It’s really important to repack your trailer bearings on a regular basis. Why is it important? I’m so glad you asked. The wheel bearings need to stay well lubricated to work properly while bearing the weight of your trailer. Unfortunately, over time the grease breaks down, especially if water works its way inside the bearings. Hence the importance of repacking the bearings with grease on a regular basis. It is recommended to do so every year or 10,000 miles. Imagine the extra revenue you could generate for your shop by simply mentioning this fact to every trailer owner that walks through the door. Before you begin, you will want to have all your materials out and ready to go. Here is a complete list of everything you might want to use. Materials Needed: -Hammer -Needle-nose pliers -Large flat head screwdriver -Large adjustable wrench -Wrench for lug nuts -2 Jack stands -Solvent -New cotter pin -Bearing grease -Gloves, clean rags and small pan Some of these things can be substituted with a different tool, however having all these things on hand will help you do get the job done in a quick and somewhat clean manor. Once you have these things it’s time to get in and get your hands dirty! 74 5 Steps to Repacking your Trailer Bearings Step 1: Removal With the axle raised on a jack, remove the wheel and then the dust cap. The flat head screwdriver will work to take off the dust cap. Next, remove the cotter pin by unbending it and pulling it out with your needle nose pliers. And finally remove the rear bearing. Step 2: Cleaning  Now it is time to take the seal out of the bearing. There are several ways to do this but we recommend simply prying it out with your flat head screw driver. Once that is out, you can remove the inner bearing as well. Use solvent to clean all the old grease off of the bearings, races, seal and hub surfaces. It’s important that you clean all parts thoroughly! Step 3: Repacking Once everything is out and clean, you can do the actual repacking. Do this by putting a glob of fresh grease on your palm and begin working it into the bearing. Make sure that it is fully packed and no gaps remain. It’s also ideal to add another layer of grease around the rollers, on the bearing continued on page 76 NATDA Magazine www.natda.org