Take down FAG bearing, with a pin pick out the "C" ring between the dust cover and bearing, with tip close to dust cover edge clockwise sliding and find "C" gap, then pick out to outside. Dismantling the dust cover and cleaning the bearing in washing powder water, we can put washing powder water into a large mouth bottle, put the bearing in bottle and cover the cap, then shake until the water epinephelos. This step is aim to cleaning the dirt and impurities inside the bearings. I can be repeated 2-3 times in order to better cleaning the impurities inside the bearings. Pick out and wipe down the bearings with the toilet paper, and then nature airing on a newspaper, at the same time, wiping the washed dust cover with the dried bearing toilet paper, so that the dust cover with a oily substance and will reduce the friction with the knife somehow.
FAG bearing is embedded in the round of bone, a wheel studded with 2 grain of bearings. At first,pick 16 bearings out of bone. Pour-out the dirty water and cleaning the out the washing powder water attached to the bearings repeatedly until no foam in the bottle then dry out the bearing. With another bottle into moderate kerosene, which can covered bearing. Packed into the bearing and tighten cap then shook the bottle repeating, for bearing grease or oil with the original, kerosene can dilute these substances. Repeat this step 1 to 2 times. When dried FAG bearing, embrocate bearing with right amount professional grease or oil, in general, we need much dosage of grease, we should embrocate every axis space. While, if use lubricants, it is enough with 1 to 2 drops for every grain of bearing.