Release time : 2015-06-10 12:46:05
By Bearing Manufacturer>Bearing News>How to Replace and Repack Rear Wheel Bearings
The car will have four bearings connected to the wheels, and the front wheel bearings with rear wheel bearing is not the same, so wheel bearings replacement will be very different.This article we focus primarily on the rear wheel bearings replacement and repackment, hope to help you riders of life.
So what exactly do your rear wheel bearings do? Believe it or not, those small steel balls or rollers (depending on the type of bearings you have) support the entire weight of your vehicle. This is no small job to accomplish for a small piece of steel, so it's important to take good care of your wheel bearings. This means keeping them clean and full of grease, and replacing them when they're worn. A clean and properly greased bearing set will last thousands of miles, even tens of thousands. On the other hand, a few grains of sand can invade your bearings and turn them to junk in a very short period of time.
The first step in gaining access to your wheel bearings replacement repacking or is to remove the dust cover that protects the bearings from road dirt, sand, water or anything else that might try to creep in. The dust cover is easy to remove. They are simply pressed into place, and can be removed easily using a Ball Miniature Bearings cap removal tool, or a pair of channel lock pliers. If the bearing cap has been on for a while, it might take some twisting, turning and persuading to get it out, but it will come. Don't worry about damaging anything at this point, these parts are not delicate.
The next step of wheel bearings replacement is to remove the cotter pin underneath the dust cap. There is probably a lot of grease in your way at this point. It sometimes helps to clean the whole assembly off so that you can better see what you're doing. To remove the cotter pin, straighten both bent ends of the pin so that it is completely straight. Now you can grab the top, or looped end of the pin with pliers and pull it out. Discard this pin, most manufacturers recommend that you don't reuse a cotter pin.
Behind the cotter pin is a safety cap that keeps the bearing nut from turning little bits while your wheels spin. It has grooves that slide over the hex nut, allowing the cotter pin to keep everything from moving, and ultimately stop the bearing from coming out of its hole. Anyway, go ahead and remove this cap to access the bearing nut.
With all of the covers, pins and caps out of the way, you can now remove the wheel bearing itself. The bearing is actually a holder (called a "race") that holds all of the little balls or rollers (depending on your bearing type) in place so that they roll in a straight line. Remove the Needle Roller Bearings race with a flat screwdriver. Stick the screwdriver in through the center of the bearings and pluck it out, making sure the screwdriver stays in the center to catch the bearings and keep them from dropping to the ground. The main purpose of this is to keep any dirt or debris from contaminating the bearings.
If you are repacking your bearings, take the bearings and place them on a clean surface like a piece of clean paper. Squeeze a liberal amount of general purpose automotive grease into the center of the bearings. Fill the entire center higher than the top of the bearings. Now take your thumb and press the grease into the bearings.
If you are replacing your bearings, you will pack them with grease in the same manner. Installation is the reverse of removal: replace the bearings, then reinstall the Deep Groove Ball Bearings nut, the safety cap, the cotter pin, and the dust cap. Some people like to add a little more grease to the party at these stages. It definitely won't hurt, you really can't use too much grease!