Preparatory step before removing tires
Immediately, as soon as you notice that the wheel is “flat”, get off the bike. Further long-term movement on an iron horse in this form will damage its moving parts even more. It is better to repair a wheel in a special room. It does not rain on you there, if it has gone, and there is all the necessary tool.
Tire replacement procedure
We have prepared everything necessary for the repair, let’s proceed:
Bike Care. Reattaching Your Rear Bike Tire
Before removing the wheels from the bike, you need to understand the features of the brake system installed on it. High-speed bikes are produced with different types of devices that differ in the principle of operation. The easiest dismantling. if there is a disc brake, complex and more time-consuming. if there is a rim system. If you do not pay attention to this, but immediately get down to work, there is a high probability that the system will be blocked so that the wheel will be fixed forever, and it will become impossible to remove it.
Rim brake system
Replacing the bike camera
To remove the tire and remove the damaged chamber, it is necessary to remove the remaining air: the cap is unscrewed and the wheel is lowered by continuous pressing on the nipple. If there is no air in the tire, which is more often the case with punctures, then simply unscrew the cap.
To remove the tire, you need special paddles. Of course, you can pry the camera with a regular screwdriver and even a knife, but it is better to have a professional tool. With the help of assemblies, the tire is pushed on from the side opposite to the nipple. As soon as it starts to pull together, you need to pry the sides a little further, until a sufficiently free part of the tire is formed, and it can be safely pulled off the rim.
You need to tighten it very carefully so as not to damage the rim, you should not use too much force. When the tire is removed, remove the damaged camera and install a new one. The nipple is threaded into the hole in the rim, then the chamber is evenly distributed around the circumference.
Attention! The camera must lie flat, without kinks, otherwise you will have to reinstall it. There must be a flipper at the bottom of the rim to protect it from the spokes. If it is torn, you need to install a new one or get by with two layers of thin electrical tape.
On top of the rim, the outer part of the tire is put on, this time, from the side of the nipple. When installing a tire, take into account the correct direction of the tread pattern. Usually, arrows are drawn on the tires, and in the upside down state of the bike, the forward direction is backward in the lower position. However, the rear wheel of a speed mountain bike is easy to go wrong, thanks to the cassette on the side. After mounting, the camera is inflated.
When to remove the rear wheel
It is unlikely that the idea of unscrewing the chassis from the bicycle frame would just come to mind, unless, of course, a person specializes in bicycle dismantling. But this is a completely different case. Dismantling the rear wheel will be required if the following problems are observed:
- noticeable damage to the rim;
- complete wear when a wheel needs to be replaced;
- a flat tire or a burst tire;
- bulkhead bushing.
This includes the planned replacement of the rear sprocket system and chain.
Before removing the bike, turn it over and place it on the saddle and handlebars. It is better to remove awnings in the form of a mirror, a bell and a lantern in advance so as not to damage them under the weight of the frame. V-brakes are first released and disassembled, otherwise they will not allow the wheel to be pulled out freely. With disc models, everything is easier. you can immediately remove the wheel.
I must say that the removal process itself consists only in unscrewing the eccentric or unscrewing the fastening nuts from the axis of the bushing, who has something. If the mount is an eccentric, simply unscrew the handles and twist the wheel. The nut fastening is loosened with one or two wrenches.
Usually one wrench of the appropriate size is enough, with which the nuts are removed one by one. If the hub axle turns, then the nuts are unscrewed simultaneously in different directions. It is recommended to use open-end wrenches or box wrenches. The adjustable version is undesirable, as its thick horns “eat up” the corners of the nut due to loose fit and sliding.
Removing the cassette and bulkhead bushing
A hub is one part of a bicycle wheel that requires periodic maintenance. On average, you need to look into it once every 2000 km of run, in terms of time it is 2-3 months of active driving. If the wheel is already creaking and there is a decrease in the efficiency of rotation, in other words, the great rides worse, then it’s time to remove it and inspect the hub.
The main problems with the bushing are backlash and insufficient lubrication of the bearings. Due to a violation of the fit or increased friction, the parts begin to wear out rapidly. If the wheel has not been serviced for a long time, the bearings may crumble altogether. To gain access to the bearings of the hub, you will need to temporarily get rid of the rear sprockets.
The rear speed device is removed using a puller and a so-called whip. Removing the cassette is a short-lived affair, but it will take a lot of effort to unscrew it from the wheel. In stages it looks like this:
- The stripper is inserted into the cassette nut.
- The whip holds the large star of the system so that it does not turn.
- With a wrench, the puller rotates, unscrewing the slotted nut.
- We remove the small stars that are installed on top, carefully fold them to the side along with the washers, and then remove the cassette itself.
Before disassembling the hub, you should slightly loosen the spoke tension. This can be done using a round key with knock-out holes for different diameters of the knitting needles. You need to loosen a little, a quarter of a revolution is enough. If the sleeve needs to be replaced, then the spokes must be unscrewed enough to easily pull it out of the engagement.
A complete bushing replacement is required if both the axle and the bearings become unusable. However, often when the bushing is jammed, the axle is in normal condition, it is enough to change the bearings. Often, both will still serve faithfully if they are well lubricated. Proper lubrication will prevent parts from wear under dynamic loads.
The bulkhead of the axle part of the wheel is associated with cleaning the axle and bearing balls from dirt. The removed parts must be temporarily placed in a solvent, then allowed to dry, lubricated and reinstalled. Bearings in a skewed position must be adjusted by returning them to a straight position. However, during the backlash, the parts are already faulty, so replacement is the best option.
Removing a wheel from a bike?
If you have never done something, then you may think that it is difficult to do it. If you have never removed the wheels from a bicycle before, then you may also be afraid that you will not cope, especially with the rear wheel (after all, there is a chain, a bunch of stars and this tricky derailleur!). But now we will tell you everything about this simple operation. There is nothing supernatural here. In short, we have already touched on this issue in the article on how to disassemble a bicycle, and now we will open this topic a little wider. You will have to remove the wheel not only if you need to disassemble the bike for transportation or storage, but also in order to replace the camera, tire or spokes (we will devote a separate article to what the wheels of a bicycle are made of). “.
How to remove wheels from a bicycle with rim brakes
If you have rim brakes, release them first. To do this, slide the brake levers towards each other and lift the cable lock up.
If you need to remove both wheels, release both brakes at once so that you don’t have to turn the bike over again. If you have tires with a large tread or they are large in diameter by themselves, then you will have to deflate a little air from the tubes. Now turn the bike upside down (if you have any accessories installed on your handlebars that can be damaged in this position, it is better to remove them in advance). The bike will stand stable enough for any operation, but if you have hydraulic brakes, it is better not to leave it in this position for a long time. air can get into the hydraulic line, which will entail a not very difficult, but tedious and time-consuming process of bleeding the brakes.
How to remove the rear wheel of a bike
If you will be removing the rear wheel, to make it easier to do, loosen the chain as much as possible by switching it to the smallest sprockets. The wheel can be attached to the frame and to the front fork in two ways: with two nuts (less often) and with an eccentric. If your wheels are secured with nuts that screw onto the wheel axle, then you need two wrenches. You just throw one on one side and hold it in this position, and twist the other counterclockwise. It is not necessary to unscrew the nuts all the way; it is enough to loosen them to the extent that they do not interfere with the removal of the wheel. In the event that the wheels are fixed with an eccentric, then everything is even easier: you don’t even need tools. Pull the eccentric lever towards you, then, holding the axle on the opposite side, make a few turns counterclockwise until the wheel is free. Everything, the wheels can be removed. Yes, and the rear too: just lift it up and remove the chain from the stars.
How to remove wheels from a bicycle with disc brakes
If you have disc brakes, just in case, insert something into the pads, into the slot where the disc was: if they accidentally close, it is very difficult to release them. And if you don’t open it, don’t put the wheel on. The role of “something” can be, for example, a piece of paper folded several times. And sometimes new bicycles come with a special plastic plug.
The assembly is carried out upside-down. To make it easier with the rear wheel, bring it to the attachment point, put the chain over the sprocket and after that insert the axle into place. Make sure the axle fits into the groove all the way and symmetrically. Are you convinced that there are no difficulties in installing the wheels on the bike? But there is one caveat: in order for the protector to work as it should, it must be oriented in the right direction. For the convenience of orientation, an arrow is drawn on the tire. in this direction the wheel rotates when the bicycle moves. But the fact that the bike is upside down when installing the wheels can be misleading. Therefore, take your time. This does not apply to the owners of bikes with disc brakes. it is impossible to confuse here. Do not over-tighten the eccentric; put the brakes back in place. All.
How to Replace a Back Bike Wheel | Bicycle Repair
The wheel does not spin at all: what to do?
It often happens that a bicycle wheel cannot be moved at all. In this case, it is definitely not worth trying to move it by force. It is quite obvious that something is bothering him.
For some, a tightly stuck wheel may seem like a big problem, however, oddly enough, it will be easier to solve this problem than other difficulties with the movement of the wheel. There will be no need to adjust the bushing tapers or remove or align the discs.
The “locked” position of the wheel, as a rule, can be caused by two main reasons:
- It doesn’t move because the brakes have clamped it;
- The bicycle chain does not move backward or forward, blocking the movement of the wheel.
The first difficulty can be solved by adjusting the brakes, for which it is enough to check whether the brake cables are tensioned and whether they react to the movement of the brake levers. In order to eliminate the second cause, it is enough to lift the chain and put it on again, and then roll the pedal back and forth a little.
Possible causes of stalled movement
The most common situation is when the rear wheel just doesn’t move well. Not everyone is able to notice this, since some associate the difficulty in movement with the fact that they are tired, go downhill, or simply pedal not fast enough. This makes this situation the most common, because many people who like to ride simply start it.
Dealing with this kind of breakdown is not always easy. For the most part, this is because people are not wondering what it is related to. Therefore, before talking about what can be done with this, it will be useful to pay attention to the most common reasons:
- Incorrectly configured brakes;
- The disc pads simply rub against each other;
- The disc is bent making it difficult to move.
In the first case, you need to pay attention to the brake machine, or rather, to the position of the disc between the pads. If it is not parallel to both of them, it can cause difficulty in movement. In order to eliminate this trouble, you need to adjust the brake machine.
If the bike was recently purchased, you should not be surprised that the pads with the disc rub against each other a little. As a rule, you can find out about this by the characteristic sound. It is absolutely not necessary to correct this situation. it is enough just to ride a little, because after a couple of trips the pads themselves will rub against the disc.
The bent disc obviously needs to be straightened. This is also not difficult. A regular adjustable wrench can be used to straighten. The main thing is to do it carefully so that you do not have to align it back several times.
What are the problems?
There can be many reasons why the rear wheel does not spin well. However, do not forget that there are enough problems with the rear wheel. Each of them has its own reasons and its own way of solving. different questions require a different approach to finding answers to them. For clarity, the main problems associated with the fact that the rear wheel does not spin well will be listed below:
- It doesn’t move at all;
- The rear wheel moves in a braked manner, slightly slower than the front;
- It can be moved, but it requires a lot of effort.
As mentioned above, each of these problems requires a special approach to itself. Therefore, before proceeding with the “repair” of the bike, it is worth understanding what kind of problem you are going to fix. And in order to eliminate them easier, below each of them will be considered in more detail.
The rear wheel is not spinning on the bike
Bicycles are often a hassle for their owners. Someone might think that this applies only to those who have them old, traveled hundreds of kilometers and seen a lot. However, this is not at all the case: even with new bicycles, you often have to mess around for a long time.
Those who like to ride can have a lot of problems with “iron horses”. Poorly inflated wheels, unadjusted brakes, loose chain, crooked steering wheel, and so on and so forth.
Of course, each of these difficulties requires separate attention, so today we will pay attention to only one of them. Namely, to the question of what to do if the rear wheel of the bike is not spinning. And for a start, it’s worth understanding what this may even be connected with.
What to do if a wheel is having a hard time moving?
It also happens when the rear wheel just moves very badly. It is simply impossible to move a bicycle in such a situation, and attempts to move it from its place with the use of brute physical force can end badly. What can you do to solve this problem? Here you need to pay attention to the adjustment of the taper of the rear hub.
As a rule, this difficulty arises precisely because the cones of the bushing, for some reason, simply press down on the disc, which makes it difficult to move back and forth. It is best to unscrew a couple of bolts and remove the disc before adjusting the hub taper. Failure to do so can damage both the hub and the disc. After the operation is carried out, you need to put everything back in place and be sure to make sure that the wheel moves normally. Even the smallest difficulties can become the reason why the operation will have to be done again in the near future.