If during the operation of the bike you find that the rear hub began to work incorrectly and there were knocks or problems when the wheel was spinning, then you need to adjust this hub. Bushings are different. The easiest way to adjust the bushing is "on balls". This bushing has a long service life, and its repair is simple and not difficult.
Instructions
Step 1
First of all, determine which bushing you have installed. The bushing “on balls” is given out by wide bushing flanges. If you cannot visually distinguish the type of bushing, then feel free to unscrew the axle. If a ball bearing is found on the flange inside the cup, proceed as instructed.
Step 2
Any bushing consists of an axle, a bearing, adjusting cone nuts and control nuts. The adjustment of the sleeve is determined by the position of the adjusting cones. These cones are rotated using a conventional wrench. Thus, if a backlash appears in the bushing, it is enough for us to tighten these adjusting nuts.
Step 3
Remove the rear wheel from the bike, take the necessary keys. Using the wrenches, unscrew the counter nuts from the axle. If the bushing is newer or less new and in working order, then the nut will be unscrewed only from one side. After the check nut, unscrew the cone and remove all washers.
Step 4
Now remove the axle from the hub. When doing this, be extra careful and try not to loose the balls. If the ball enters the inner space of the bushing, it will be very difficult to remove it from there. Therefore, try to carefully remove all the balls from the cups and put them in a container or on a tray.
Step 5
To access the flange where the cassette is installed, it will need to be removed. For this, a special stripper is used, which is called a cassette stripper. The cassette is simply unscrewed. Keep in mind that there is a reverse thread and this part is unscrewed in the direction of the wheel's free wheel. Those. the wrench must be rotated in the direction of idling of the ratchet. Please note that removing the cassette is not easy and requires a lot of effort. The cassette itself is blocked from scrolling using the so-called. whip.
Step 6
Wipe all parts of the bushing with a rag. Now you can also remove the bearing from the cassette-covered flange. Clean it up too.
Step 7
After that, it is necessary to install a “dead” nut on the side of the bushing that will work for twisting. In the process of movement, the friction forces will tighten it, but since the nut is already tightened, the bushing will continue to work. If this is not done, then in the process of movement the sleeve may twist and stop rotating.
Step 8
The "dead" side is very simple. The control nut and flare nut are screwed relative to each other using wrenches.
Step 9
Now you need to assemble the bushing in the reverse order, not forgetting to grease all the rubbing elements with grease (for example, the so-called Litol)
Step 10
When adjusting, you will need to rotate the control nut and achieve such a position so that the hub axis rotates freely and smoothly at the same time, and at the same time does not play. Do not overtighten the sleeve. The bushing is overtightened if it is impossible to turn the wheel around its axis, holding the axle with your fingers.
