What tools and how to remove a chain from a bicycle, procedure

Sequence of actions for removing a chain from a bicycle without squeezing it yourself

The squeezer is a useful device. However, it is not always at hand. What to do then? The prospect of being left in the middle of pristine nature somewhere many kilometers from the city does not look attractive. You can remove the chain from the bike without squeezing it. Doing this on your own will not be easy, but it is quite possible. Let us consider in detail the options for disassembling a chain with and without a lock.

Model with lock

Lock.

How to check if a chain has a lock? As easy as pie! A quick inspection to see if the chain has a link that is different from its neighbors. This is the castle. You can disconnect it by moving the pins on each of the links with your hands or pliers. To assemble the chain, you need to do the same steps in reverse order.

Model without lock

In this case, it will be difficult without squeezing. And the result will be unpredictable. But, if there are no other options, choose the lesser of 2 evils. So, we remove the chain without a lock from the bicycle using improvised means in this order.

1. Screw an ordinary vice to the table.
2. Secure the chain in a vice by placing a nut on one side, the hole of which corresponds to the pin.
3. Attach a small screw with a head on the other side.
4. While holding the vise, push the pin into the nut hole with the ball.

Important! In order to open the circuit, freeing one side is not enough. You need to move the link and remove the chain or add another ball and continue trying

Summing up, we can confidently say that the squeeze is an indispensable thing on the road for every cyclist. And if a broken chain with a lock can still be removed from the bicycle without this device, then as for a chain without a lock, it will be difficult to do without it. However, in case of form major circumstances, you can use the instructions given above.

How to remove a chain from a bicycle?

During active operation and use of the bicycle, troubles may occur regarding one of the parts.

Frequent breakdowns are associated with sagging, slipping or rupture of the metal structure. For repair or replacement, it is recommended to completely remove it from the vehicle. There are 2 removal methods depending on the type of link attachment.

How to remove a chain without a lock using a squeezer?

The whole process can be expressed in step-by-step actions:

1. It is recommended to use a special tool – a squeezer. It consists of a metal base and a screw-on bolt;
2. It is necessary to select 1 link or several to open;
3. It is recommended to bring the link or links into a special position in relation to the axle or pin;
4. Using slow movements, you need to unscrew the screw and tighten the axle (these actions greatly loosen the axle, which can lead to unusability);
5. It is recommended to put the axle in place using pressing (it consists of clamping the links together and returning the pin to its place using a screw).

This chain mechanism is less popular among cyclists, as it is difficult to remove and repair. The structure cannot be disassembled or removed without a special tool.

How to remove the chain with the lock?

This method is the fastest and most convenient. In the process, it is possible to use a special tool (you can use a key with recesses). It may be useful when replacing the lock structure. You can do without it and remove it using your hands.

When using pliers or a wrench:

• It is recommended to select a piece of metal ruler;
• It is necessary to clamp the link with the tool and make careful movements to the side;
• It is recommended to remove the part for further replacement or repair.

When using your hands:

• It is recommended to pinch the selected link with your thumb and forefinger;
• It is necessary to shift the metal structure to the side (it is also possible to use an ordinary thread);
• When using a thread, you must carefully hook it to the edge of the metal ruler in the selected place and use it to move the mechanism to the side;
• It is recommended to remove the mechanism for repair or replacement;
• When making a replacement, you must carefully insert the element into the common line.

It is not always possible to replace or repair a bicycle structure. In such situations, it is possible to use emergency repairs to avoid the part coming off or breaking. In a repair shop, such a breakdown can be performed quite quickly and efficiently for a minimal fee.

Reasons for the break[edit]

All possible causes of a circuit break are not fully known, and this can happen to anyone, but, nevertheless, such a breakdown is a rather rare occurrence. It is believed that the following reasons can lead to a break:

• Heavy chain wear;
• Incorrect chain assembly;
• Incorrect use of the front derailleur;
• Heavy biker weight.

In real life, the greatest chance of breaking the chain comes from excessive force applied to the pedals. The power, as they say, is there - no need for intelligence. Moreover, there may be some intrigue here - what won’t hold up first: the pedal axles, connecting rods, sprockets, or even the chain. As a rule, when a break occurs, only one (which turns out to be the weakest) link of the chain is damaged or destroyed; in order to continue movement, it is necessary to remove it and put the chain back together. In this case, the chain can be shortened to a critical length, so after repair, as soon as possible, you should check the length and, if necessary, increase the chain with spare links.

How to shorten a bicycle chain using a wringer?

To do the job using a special tool, you need to perform the following sequence of actions:

1. Place the squeezer in a position where its rod is centered on the axis of the chain link.
2. Perform rotational movements with the tool until the axle is almost completely out of the link.
3. Disconnect the circuit and, if necessary, perform similar operations with its remaining sections.
4. Remove unnecessary links and connect the structure.

Having figured out how to shorten a chain on a bicycle, you need to figure out how to connect it. A narrow half-link must be inserted between the cheeks of a wide one. The axle should then fit completely into the hub hole. Next, it is necessary to evaluate the mobility of the links. If it is insufficient at the joint, the hinge can be developed using pliers.

Installing a chain on a bicycle

To install a chain on a singlespeed, you just need to hang it on both sprockets, press in a pin or snap the lock. With high-speed bikes it will be a little more difficult:

• Fix the derailleurs on the small chainrings.
• Taking into account the location of the tension rollers, put the chain on the sprockets.
• Combine the links.
• Clamp the chain and press in the axle. If the bicycle chain has a lock, we do without squeezing it.

After the installation is completed, you need to check the chain movement: spin the pedals several times. If there is no sagging or difficulty during torsion, then the chain has the optimal length and is installed correctly.

Every owner of a two-wheeled horse can cope with the removal and installation of a bicycle chain. A simple and simple procedure will not take much time, but it will be a great help on future trips!

If you ride a bicycle for many kilometers, the spare parts will sooner or later wear out. After a long mileage, the bicycle chain will “stretch” and will need to be replaced. Technically the chain does not stretch

, but the pins that connect the links wear out, increasing the length of the chain.

Stretched chain

accelerates wear on the cassette and chain rings on the sprocket, so getting a new chain when the stretching is already noticeable is a good idea. It is recommended to replace the chain every 1000-1500 kilometers. By the way, replacing a chain is much cheaper than replacing cassettes or chain rings on a sprocket.

The chain repair and shortening information below will be very helpful.

Self-installation

You can perform the procedure yourself; this will require a standard set of tools and a squeeze. Installing a chain on singlespeed is the simplest, consisting of only two steps. First, the canvas is hung on both stars, then the lock is latched. With high-speed bicycles you need to act differently:

• the switches are fixed on small stars;
• a chain is attached to the stars, taking into account the location of the tension rollers;
• connect the cells of the chain node;
• The bicycle chain is compressed and the axle is pressed in.

Features of installing a chain on a bicycle largely depend on the type of blade. Products with a lock are first attached to small sprockets, then the position of special rollers is checked. After installing the links, the mechanism is tightened and the entire structure is clamped around it.

After you have assembled the canvas, you need to check that the work was done correctly. If there is strong tension or sagging, the position of the mechanism is changed, otherwise the cyclist may be injured while riding.

Removing and replacing a chain on high-speed bicycles usually does not cause any difficulties. Even a beginner who has no experience in such work can easily handle the installation. If the procedure is being performed for the first time, you should use step-by-step instructions with a detailed description of each stage.

Installing a chain on a singlespeed consists of only two stages: first, the chain is hung on both sprockets, then the lock is snapped into place

On high-speed models, the switches are fixed on small sprockets, the chain is attached, after which the cells of the chain assembly are connected, the bicycle chain is compressed and the axle is pressed in

Opening the lock and squeezing the link axis

Opening the lock is quite simple: use a screwdriver or other object (for example, a knitting needle) to pry up the pincer clamp. The main thing here is not to damage it, and even better, not to lose it, otherwise you won’t be able to fix the chain later. Next, we uncouple the entire link. That’s it, you can remove the chain and do whatever you want with it: clean it, throw it away or shorten it. However, we'll talk about this a little later.

Lock in disassembled condition

You can disconnect a continuous chain only with a special tool - a squeezer. With its help, you can easily disassemble the link without damage. The procedure is simple, but there is no need to rush:

• First, select a link for disassembly.
• We insert the chain into the position of pressing out and pressing in the pin (link axis).
• We tighten the screw with a handle and pull out the axle. The direction of extrusion is towards the squeeze screw, that is, towards yourself.

You should not remove the pin completely, as it will not be easy to return it to its place later.

Hall chain release device

Squeezing loosens the axle a little, so when disengaging again, you should select a different link. Pressing the axle into a link is carried out in the opposite order: connect adjacent links and press the pin with a screw.

Bicycle chain parts and necessary tools

Chain wear indicator

: A typical chain wear indicator hooks onto a pin in the chain while the other end is inserted between two pins or rollers. The numbers on the tool will show how worn the chain is and whether it is time to change it.

New chain

: The type of chain depends on the number of speeds of the bicycle. So, for example, if the bike is 9-speed, you need to buy a 9-speed chain. More advanced chains include a special coating that will delay the appearance of rust, or they are already made of stainless steel.

Replacing pins or connecting link

: New chains immediately come with a new pin or special link called a connecting link that connects the 2 ends of the chain together. If you are repairing an existing chain, you will need to buy replacement pins or connecting links separately - they must be compatible with the chain speed and brand.

Squeeze

: If you have a standard link chain, you will need a compatible puller that will allow you to easily remove the old pin and install the new one when disconnecting and joining the chain.

Pliers:

If you have a chain that connects to a connecting link, you will need pliers to make the process of disconnecting and connecting the connecting link easier.

How to check a bicycle chain

To check the chain for significant stretch, use a chain wear indicator . Hook one end onto a roller or pin in the chain. The other end will either come to the drive wheel itself, or you can place it in the gap between the two rollers. If it falls out of this gap, the chain is so stretched that it needs to be replaced.

The chain wear indicator has numbers that indicate how worn the chain is. A value between 0.5 and 0.75 indicates that the chain needs to be replaced. A value of 0.75 or higher means that it is necessary not only to replace it, but also to check the condition of the cassette and drive sprockets, since stretching the chain could cause significant damage to the cassette and drive sprockets.

You can check the chain in another way - measure the chain with a ruler or tape measure. On an unworn or new chain, 12 full links (measured from pin to pin) should equal 12 inches (30.48 cm). If the 12 links are 31 cm or longer in length, the chain needs to be replaced.

On topic: How to change a chain on a bicycle?

Symptoms of a problem

First of all, you should pay attention to chain malfunctions on multi-speed bikes. Traditionally, riding time is determined by mileage, but these values ​​are too approximate, because everything depends on the cycling conditions: road quality, gear selection, speed, load on the pedals and, accordingly, on the front sprockets

The first signs of a bicycle chain failure are inaccurate gear shifting and suspicious sounds (provided that the chain has not lost its lubrication). The following method will certainly help you determine the malfunction: bend it away from the largest sprocket and look at the number of free teeth. If the chain moves freely from three or more teeth, replacement is required urgently. Two teeth “warn” that wear is just around the corner, but you can still ride.

Using the same method, you can see if the chain is loose on a single-speed bicycle: bend it away from the front sprocket and look at the number of teeth.

Determination of the degree of attenuation

Another way to determine wear is to measure the length:

• 304.8 mm is the optimal chain length.
• 306.5 – 307.5 – average wear, suitability for repair. You can still drive.
• 308 mm – high degree of wear of both chain and sprockets.
• More than 308 mm – damage to the entire transmission.

Measuring elongation requires removing the chain completely from the bike.

When should you remove the chain from your bike?

Removing a chain from a bicycle is done not only for the purpose of repair or replacement.

There are many other factors:

• to check the correctness of the selection;
• to check the pedal load;
• to check the reflective factors of road quality;
• During long or strenuous cycling, you should check the condition of the metal chain.

The length of the chain is of great importance, which is recommended to be measured only after removal. The optimal length is considered to be 30.5 centimeters. With a length of 30.8, this part should be replaced, as it is no longer suitable for use.

Sometimes unpleasant sounds appear when driving, which may indicate a malfunction of the chain assembly. Sounds may occur even with lubricant

To inspect the links, you need:

• Bend the links slightly in the area of ​​the largest star;
• Inspect the links. If it is noticeable that the part has moved away from 2 pieces, then it is possible to continue driving with subsequent replacement of the entire chain. If it comes off by 2 or more links, it must be replaced immediately after the inspection procedure.

Standard removal process

All guides describe the same procedure for removal. To do this, you will need, first of all, a small set of tools - without them it will be quite difficult.

Tools

• rear wheel removal wrench;
• pliers for holding segments and pins;
• squeezer - a device for pressing out pins, without a lock - the most important tool in the process.

Process

Let's take a step-by-step look at how to remove a chain from a bicycle:

1. We clean the links from dirt - it will interfere with each subsequent step.
2. Removing the rear wheel is not a necessary step, but it is much easier to work without it.
3. Press out the pin (the metal cylinder that closes each link) using a squeezer.
4. Disconnect one link.
5. Remove the outer links from the switches.

The reverse sequence is similar - put the chain in place and assemble the structure back, riveting the pin using a squeezer and rotating it in the opposite direction.

No tools

In the absence of a squeeze, you can install everything back without it. Pliers and any strong cylinder, for example, a small hexagon, will help. By carefully clamping the cylinder, the pin can be riveted in the same way as a squeezer, it just requires much more attention and force.

Models with a lock can be unlocked using a tight rope or cable. This allows for quick repairs literally in the field, for example, when the chain suddenly breaks on a short hike.

Removing the lock link without tools

Work process

Removing the element with the lock will not take much time and effort. Today, there are several varieties of this bicycle chain device, but the principle of opening them is similar. It is necessary to close the axes and remove the cover. For convenience, you can use pliers; it is also good if you have pliers on hand for opening. Thus, the whole procedure will not take much time and you can quickly remove the fault, change the part or remove the chain from the bicycle.

If there is no lock, then you need to make some effort. To work you will need a special squeeze. It is a tool with which it is very convenient and easy to squeeze out a pin. To work, you need to place the chain link so that the release axis is directly opposite the pin. Then you need to twist the handle and squeeze out the pin itself. It is very important to prevent it from popping out, otherwise it will be very difficult to insert the pin into place correctly. Next, the bicycle chain can be replaced or repaired.

There are some points that should be taken into account when working. For example, if the same bicycle chain was removed repeatedly, then next time it is necessary to open another link and segment, because after this process it becomes slightly looser. Also, some squeeze models may have two seats and you need to attach the link carefully, correctly and carefully.

Modern models of equipment have a special lock in their design, which simplifies the procedure. For some chains you will need a special tool - a squeezer. It will provide convenience when removing excess or damaged links and will allow you to correctly remove the bicycle chain. Without using such a device, removing the chain from a bicycle is quite difficult, although it is possible.

Using a chain squeezer

In some chains, a split link is used to remove and install it, so a squeeze is not used. But, when traveling, you need to have it, since the chain sometimes breaks, and it needs to be repaired - replace a section of the chain, or if the rooster or rear derailleur breaks, shorten the chain and turn a multi-speed bicycle into one high-speed one.

It is difficult to do all these actions without squeezing the chain. Very often, a chain squeezer is included in a universal tool, although such squeezers are inconvenient to use.

An indicator of the reliability of chain squeezing is the material from which its pin is made. It should be fairly rigid and not bend after several uses. Sometimes marc from well-known manufacturers works much worse than inexpensive ones of unknown origin.

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How to shorten a chain on a bicycle: practical recommendations

Sports and Fitness November 14, 2016

After using a bicycle for a long time without maintenance, the chain often begins to sag. How to shorten a bicycle chain at home? What is required to determine the correct length? We will look for answers to these and other questions in the presented material.

What factors affect the elongation of a bicycle chain?

A number of factors lead to wear of the axles, the so-called pins, of a bicycle chain. Firstly, deposits in the form of old oil accumulate between structural elements, onto which dust and small contaminants stick.

Additionally, stretching can put undue stress on the chain when cycling up steep inclines. Another reason is the end of the chain’s service life, the destruction of its elements as a result of impacts and metal corrosion.

To avoid discomfort while using the bike, you need to figure out how to shorten the chain on the bike.

How to determine the optimal length?

Before you figure out whether you can shorten the chain on a bicycle with your own hands, you need to find out how long it should be for comfortable movement.

To understand this issue, it is enough to throw the chain onto the largest sprockets in both the rear and front chassis of the bike. Next, you need to open one of the links. Finally, tighten the chain as much as possible.

It is enough to add a couple of centimeters to the resulting length so that the chain is not under excessive strain while driving.

Video on the topic

Preparation for dismantling

To make it easier to work with the chain, it is worth cleaning it first. The simplest way is to wipe it with a regular piece of material soaked in kerosene. You can also use a special remover, in particular AB-80 or WD-40 liquid.

Tools

How to shorten the chain on a speed bike or mountain bike? There are several tools you can use to separate the links. First of all, you should pay attention to the special squeeze.

The latter is a simple device that resembles a manual stand with a rod that applies pressure to the axes (pins) of the links. You can buy such a tool at any point that sells sports equipment.

Its purchase will cost from 500 to 1000 rubles.

If it is not possible to buy a squeeze, then you will have to use improvised means. We are talking here about a hammer and a metal rod, which will serve as a punch for removing the axes of the links. You will also need a couple of nuts that will fit under the chain links.

How to shorten a bicycle chain using a wringer?

To do the job using a special tool, you need to perform the following sequence of actions:

1. Place the squeezer in a position where its rod is centered on the axis of the chain link.
2. Perform rotational movements with the tool until the axle is almost completely out of the link.
3. Disconnect the circuit and, if necessary, perform similar operations with its remaining sections.
4. Remove unnecessary links and connect the structure.

Chain assembly[edit]

When assembling the chain, it is necessary to overcome the tension of the rear derailleur spring, so an assistant will be appropriate here to hold the derailleur (or remove the chain from the system).

Place the chain so that the protruding pin faces your direction.

Grasp the link that does not have a pin protruding from it and guide the chain from right to left through the front and rear derailleurs. The rear derailleur has 2 “holes” next to the rollers that you need to thread the chain through. Connect the ends of the chain at the bottom against the resistance of the rear derailleur spring. Have an assistant hold the switch.

Place the link to be connected in the squeeze, on the stop that is closest to the fixing screw.

When adjusting the position of the chain, move the pin to the clamped pin so that they are coaxial.

Tighten the link with the fixing screw

Attention! Skipping this step may result in broken squeezer.

Rotate the handle to press the pin into the link. Constantly monitor the degree of immersion of the pin in the adjacent ones - it should not be completely flush with the cheek, but stick out a fraction of a millimeter.

Remove the chain from the squeezer, check how symmetrically the pin fits

If necessary, adjust its position.

Check the mobility of the assembled link. If it bends tightly, then you need to grab the chain on both sides of the assembled link and forcefully bend it in the transverse direction.

How to determine the length of the new chain?

Usually the new chain is too long, so it will have to be shortened by removing links. There are several ways to do this. The easiest and best way to determine the length of a new chain is to place it against the old chain. Then you just need to shorten it to match the old one (to be sure, you should count the number of links). Another variant . Thread the chain through the front derailer and drape it over the large sprocket at the front and over the large cog at the rear. Do not run the chain through the rear derailleur yet. Connect the two ends of the chain tightly. If the chain connects and there are still 2 whole links left on the overlap (the half of the link will still remain at the end - the place where you connect the chain), the chain length is correct.

Note : Many full suspension mountain bikes use a design that moves the rear axle further away from the bottom bracket while the bike is riding, through the suspension; this is called "chain growth". To accommodate the chain growth, you will need to compress the rear suspension a lot when using the method above.

Before removing unnecessary links, make sure that the two ends of the chain will connect. A chain can only connect if the outside of the link connects to the inside of the connecting link. Then disconnect the remaining links.

On the subject: How to choose the length of a bicycle chain?

How to remove a chain yourself using a squeezer

Perform actions in the following sequence:

• select the area you want to disconnect. If the element has been disassembled more than once, select a previously unrepaired link;
• a link is inserted into the squeeze so that the clamping axis and pin are opposite;
• the part in the chain squeeze is fixed with a screw;
• to push the pin out, rotate the handle of the device;
• when the pin is pressed out, the links are removed;
• the outermost ones are connected, making sure that the pin, which is located “in the cheek”, looks outward, i.e. He “looks” at the repairman making repairs. The part is first passed through the switches, after which two links are placed on top of one another, making sure that the pin coincides with the bushing;
• The “cheeks” are opened with pliers. The pin extending outward prevents the links from coming apart once they are in place;
• To press a pin into the hole, the squeeze is inserted into the link so that the axes of the rod and pin ideally coincide, and the funnel is turned;
• Next, check that the “cheeks” of the pin links are symmetrical. If this is not the case, they will have to be corrected;
• the connected links are checked for mobility. If they are motionless, the position is corrected using pliers.

Types of bicycle chains

Let's consider 2 main types of bicycle chains:

• Keyhole;
• Solid.

Keyhole

Its peculiarity is that it has a special clamping device.
It is not difficult to remove one from the stars, as well as to put it back on. To do this, you just need to disconnect the lock. The location of the split link can be determined by visual inspection. If the links are clean, finding the connector is easy. As a rule, the manufacturer's mark is stamped on the connector.

Solid

It is impossible to completely remove such a bicycle chain. If you remove it completely from the sprockets, it just hangs on the frame. Of course, compared to the option equipped with a lock, the solid design is less convenient. However, there are also advantages. The lock may become loose and the connecting pin may get lost. The links disengage. There are no such problems with a solid chain. If it breaks, then this is purely a quality cost.

How to tighten a chain on a bike with speeds

The tension of the bicycle chain of a mountain, road or other bicycle, which uses the principle of throwing the chain onto sprockets with different numbers of teeth to change gears, differs from that described above. The difference is that it does not have a fixed position, and its tension is provided by the rear derailleur spring. But you should still monitor the degree of stretching. If the chain is too long, it will be more difficult for the rear derailleur to compensate for slack when driving over uneven surfaces, and it will hit your chainstay with great intensity. Of course, you can buy or make a bicycle chain guard yourself. But this will not save you from accelerated wear of the transmission. But it’s also not worth tightening the chain on a fast bike. This will lead to poor gear shift precision and increased wear on sprockets and other components.

• How to know when the chain needs to be tightened

There are several ways:

We set the speed position when the chain is on the largest front sprocket and the largest rear. Next, take it at the bottom of the front sprocket (as shown in the picture) and pull it towards the front wheel until the rear derailleur reaches the stop. If you have about two “extra” links left, then the chain length is normal.

The second method is a little simpler. We set the position in which the largest front and smallest rear sprocket are used. In this position, the guide roller and the rear shift tensioner roller should be coaxial and perpendicular to the ground.

On double hangers we will use the following method to determine the required length. Let's press on the pendulum until the front sprocket cassette moves to the maximum distance from the ratchet. This is the optimal distance by which the required chain length is measured.

• Pull-up procedure

Unlike single-speed bikes or those with a planetary hub, bikes with derailleurs cannot tighten the chain by moving the rear wheel. Therefore, the only way is to remove the chain links. Since this method is common to these types of bicycles, we have included it in a separate section, which is located below.

Disassembling the chain[edit]

Wear gloves that you don't mind.

Remove the pomace and collect it if necessary.

Place the link to be pressed into the press, on the stop that is closest to the fixing screw.

When adjusting the position of the chain, move the pin to the pin being squeezed out so that they are coaxial.

Tighten the link with the fixing screw

Attention! Skipping this step may result in broken squeezer.

Rotate the handle to move the pin out of place. It may take a lot of effort, but the rest will be easy.

Slowly move the pin about 3-4 mm

Knowing the pitch of the thread on your squeeze, it is easy to calculate the number of turns of the handle required to move the pin the required distance. If you feel an increase in force on the handle (this means that the pin has almost completely left the opposite cheek), stop immediately!

Here our task is to squeeze the pin so much that it stops holding the chain together, but at the same time remains clamped in the cheek. If you push out the pin completely, it will be very difficult to insert it back in the field.

Remove the chain from the squeezer and check whether it can be separated by spreading the jaws with your finger.

If not, insert the chain back into the wringer, tighten it with the screw and pin, and turn the handle another half turn. If necessary, repeat several times - there is no need to rush here.

When the chain comes apart, ideally, the pin will stick out inside the link by about 0.5 mm, which will simplify subsequent assembly.

Step-by-step instruction

When answering the question “how to shorten a chain on a bicycle,” it is worth remembering that all actions are performed in the following order.

1. The squeeze is installed in such a way that it the screw was exactly in the center of the connecting pin. After this, the screw is smoothly tightened and squeezes out the pin. It should not be pushed out completely - only until it is at the level of the second plate of the link. Otherwise, during assembly it will be difficult to install the pin in place.

   

2. The squeezer is dismantled and the links are separated. They can be pressed tightly against each other, and to disengage you will need to apply force - you should not be afraid of breakage, you can even use pliers.
3. The number of links that need to be removed to achieve the optimal chain length is calculated. After this, the excess elements are removed so that it remains possible to connect the new ends to each other.
4. The ends are brought together and connected using a squeeze, working in reverse order. If the chain was removed before starting work, you should first make sure that it is threaded through the caliper.

   

   Important! Before shortening a bicycle chain on a speed bike, you must make sure that after removal there will be links of different types at the ends. At one end there should be a narrow link inserted between the ears of the wide one.

The most difficult thing in this work is to make sure that the holes match and the pin fits freely into place. In this case, after the work has been done, you will also need to adjust the rear and front speed derailleurs.

Another difficulty is determining the required chain length . To do this, you need to change the gear on the bike so that both the front and rear chain rests on the largest sprocket. After this, the links open and the part is tightened until it stops. A mark should be made on it, adding a couple of links so that the transmission does not overstrain.

Bicycle Chain Installation

It's time to thread the chain through the rear derailleur and connect it

Pay attention and make sure the chain goes straight through the drive wheel on the rear derailer

Using pins

: If the chain does not have a connecting link, then use a squeezer to connect the chain to the pin that is already in the new chain.
If you are repairing an old chain, always use a new pin instead of the old one. The new pin must be compatible with the chain, its speed and brand. The new pin must be inserted halfway using a squeezer, then pulled out on the other side using pliers. Using connecting links
: If you are connecting a chain with a connecting link, place one half of it on each end of the chain, connect the ends of the chain, assemble the connecting link with a tool to put it in place.

It is also possible to connect the connecting link without tools. Connect it and pull the chain in different directions to lock the connecting link as much as possible. Then loosen the derailer clutch, if equipped, and rotate the pedals so that the connecting link is at the top of the drive chain. Using the brakes, step firmly on one pedal, tension will be applied to the chain and it will snap into place.

How to replace a chain on a bicycle - video

It happens that you need to remove a bicycle chain - for example, to clean it, replace it or adjust the length (the latter is done if your new cassette has a different number of teeth, and you need to change the length of the chain accordingly by adding or removing a certain number of links) .

How to remove a chain with a lock

Inspect the chain: if you find a link that is different from all the others, then you are lucky - you have a chain with a lock. In order to separate it, move the pins (pins, axles) on each half-link (cheek). The circuit will open. The whole operation will take literally a minute. You don't need any special equipment: if you suddenly can't move the pins by hand, use pliers. Assembly is also done without any tricks, in reverse order.

How to remove a chain without a lock

If you have a chain without a lock, then you will need a special tool - a chain squeezer. It is inexpensive and takes up little space, so we recommend that you always carry it with you, along with a set of hexagons and a repair kit for cameras. Anything can happen on the road - if the chain suddenly breaks, you can easily remove the damaged links using a squeezer and connect the chain again.

How to remove a chain without squeezing? And is it worth doing?

How to remove a chain without squeezing is a pressing question. But no matter how often it is asked, it is better to remember one life rule. For good repairs and maintenance, it is better to use specialized tools! In this case, it is squeezing the chain.

There are two types of squeezers, most have two seats. One of them is for assembling and disassembling the chain, the second is for adjusting the position of the axle in the chain link bushing. If your squeeze is just like this, with two seats, then insert the chain link so that it is on the side closest to the adjusting screw. If you place the chain in the wrong place, you may accidentally break off the partitions between the squeeze seats during operation or crush the cheeks of the link.

Let's assume that the chain is laid correctly

Now carefully rotate the handle. You may have to apply significant force, so try to work carefully so that the link in the squeezer does not become distorted, otherwise it can be damaged

Make sure that the tip of the squeezer presses directly onto the pin. There is no need to turn the screw quickly; you should stop at the moment when the pin is squeezed out of the entire link, but remains on the far cheek. If you push it all the way out, believe me, it will be very difficult for you to put it back in. Also be careful not to accidentally knock the pin out of the cheek: this could cause it to roll away in an unknown direction and get lost.

When assembling, you will not need anything other than the same squeeze. I remind you again: be careful, don’t get carried away, so as not to squeeze the pin out of the link.

Two important notes:

• If your chain is equipped with a lock, you should not disassemble it by squeezing it.
• If you have to disassemble the same chain many times, then choose a new link each time: if you squeeze out the same pin over and over again, this will deteriorate the strength of the chain

Author of the article: Alexey Zheludkov

After using a bicycle for a long time without maintenance, the chain often begins to sag. How to shorten a bicycle chain at home? What is required to determine the correct length? We will look for answers to these and other questions in the presented material.

How to dismantle different types of chains

All instructions on how to remove a chain from a bicycle describe the same procedure. To perform this you will need a standard set of tools:

• wrench for unscrewing the rear wheel;
• pliers, necessary for holding the pin and segments;
• squeezer – a special device for pressing out pins.

Replacing a damaged, sagging, torn or jumping blade requires removing the chain. There are two ways to perform the procedure. The optimal option depends on the type of link fastening.

Rear wheel wrench

Pliers

Squeeze

Without a lock with a squeeze

A squeeze tool, which consists of a metal base and a screw-on bolt, will help you perform the procedure correctly. Sometimes this tool is included with a set of hexagons. Experts recommend taking it with you on the road. The chain without a lock is removed in accordance with the instructions:

• First of all, one or more links are selected for opening;
• the cells are placed on the tool so that the pin is located directly in front of the release axis of the device;
• With careful movements, unscrew the screw and pull the axle towards you;
• The axle is put in place by clamping the links and returning the pin to its original position.

Removing a chain from a bicycle without a lock is quite difficult. If you push the pin all the way out, you won’t be able to insert it back on your own. The mechanism cannot be disassembled without special tools, so it is not popular among cycling enthusiasts.

If you have to disassemble a chain on a bicycle many times, you need to select different links each time. Extruding the same pin will reduce the strength of the blade.

With a lock

The locking leaf is connected by a special device that can be easily disassembled. To find the fastening, you need to carefully inspect the chain from all sides. The split link is usually stamped with the brand name. You can open it using a screwdriver, pliers, a key with notches or any other tool. The procedure consists of several stages:

• you need to find split links, select one of them;
• the cell is clamped with a suitable tool and careful movements are made to the side;
• The part is removed for repair or replacement.

When there is a breakdown on the road, you don’t always have special tools with you. In such a situation, you can remove the chain and lock from the bicycle using only your hands. The procedure is carried out according to the instructions:

• the selected cell is clamped with the thumb and forefinger;
• shift the metal structure to the side (it is convenient to use ordinary thread for this);
• the thread is carefully hooked to the edge of the fabric in a pre-selected place, then pulled to the side, moving the mechanism;
• after this, the failed element on a bicycle without speeds is removed for repair or replacement;
• if replacement is intended, after removing the old one, the new element is carefully inserted into the common fabric.

If there is a chain with a lock, the bicycle can be repaired without squeezing. Emergency repairs are carried out to avoid the part slipping off or breaking. You can do this yourself without resorting to the help of specialists.

Bicycle chain tensioners

A special bicycle chain tensioner can be an effective and useful accessory, the use of which allows you to maintain the necessary chain tension while riding. This accessory is used mainly by fans of extreme, aggressive driving.

Chain tensioners are usually installed on single-speed bicycle models. Such accessories consist of one or more rollers, a lever and a spring. Tensioners work on the principle of systematically pulling the bicycle chain in the required direction, which creates the required tension. Moreover, the presence of a tensioner prevents the chain from falling from the drive sprocket located on the bushing.

Experienced cyclists are advised to always have several chains in stock. Each of them should be operated with a rolling distance of no more than 600 km. After which the bicycle chain is replaced. A new, shortest one is put in its place. As a result, the life of not only all existing chains, but also the transmission of the two-wheeled vehicle is significantly extended.

How to remove a chain from a bicycle - detailed recommendations:

Keeping a bicycle chain in perfect condition guarantees an adequate response to the cyclist’s actions from the entire mechanism while driving. When purchasing a new vehicle, there is no need to separately purchase a new chain and install it. However, in the future you will still have to learn how to remove the chain from the bicycle for its maintenance or replacement.

When should you change your bicycle chain?

A good bicycle chain lubrication can significantly increase the service life of the entire system responsible for movement. At the same time, you need to be able to notice the moments when it begins to need maintenance or repair.

Excessive wear on a bicycle chain not only causes constant discomfort while riding, but also causes active deformation of the chainrings. If a worn chain is left unattended for a long period of time, it is guaranteed to lead to the need to replace a whole set of expensive mechanisms.

In order to assess its condition as objectively as possible, it is necessary to look not at the mileage, but first of all to measure the length of all its links. The chain length in normal condition is approximately 305 mm. The reason for its replacement is its stretching to 308 mm or more.

How to deal with chain stretching?

A common problem with a bicycle chain is its sagging. The reason for the development of this process is the gradual wear of the links. Moreover, it is almost impossible to prevent wear of individual chain elements. The problem can be eliminated only by removing excess links as they stretch.

To correctly perform the necessary actions, you must:

• Decide how to remove the chain from the bicycle by first disconnecting the rear wheel.
• Disconnect the chain using pliers.
• Determine the number of unnecessary links.
• Remove unnecessary elements.
• Connect the links, install the chain, check its mobility and functionality.

How to remove a chain from a bicycle to replace it?

When an old chain becomes physically and morally obsolete and does not satisfy the bicycle owner with operating conditions, it must be urgently changed. As a replacement, select a chain with the same number of links. However, its length should be somewhat shorter.

How to remove a chain from a bicycle correctly? To do this, you need to use a special tool - a squeeze. Having placed the squeeze opposite any of the rollers, you need to tighten the screw so that this leads to the pin being squeezed out. Next, you should loosen the tool and then remove it. In a similar way, using a squeezer, the chain is removed for regular scheduled cleaning.

Quite often, experienced cyclists use special locks for quick maintenance, removal and cleaning of the old chain. The use of this device makes it possible to instantly remove it for replacement.

However, some bicycle owners have prejudices regarding the effectiveness and reliability of using a lock. After all, if it is present, the risk of a sudden break in the chain increases.

It is not known for certain how often chains break when there is a lock, but without it the mechanism still looks more reliable.

How to tension a chain on a bicycle?

Managing chain tension on standard road bikes is quite easy. It is enough to pull it back towards the fork. The main thing is to perform such a manipulation carefully so as not to overdo it by applying too tight a tension.

However, both a strongly and weakly tensioned chain can create some discomfort while driving. So, when trying to figure out how to tighten a chain on a bicycle, it is important to stop in time so that it is in a state of medium tension.

Bicycle chain tensioners

A special bicycle chain tensioner can be an effective and useful accessory, the use of which allows you to maintain the necessary chain tension while riding. This accessory is used mainly by fans of extreme, aggressive driving.

Chain tensioners are usually installed on single-speed bicycle models. Such accessories consist of one or more rollers, a lever and a spring. Tensioners work on the principle of systematically pulling the bicycle chain in the required direction, which creates the required tension. Moreover, the presence of a tensioner prevents the chain from falling from the drive sprocket located on the bushing.

Experienced cyclists are advised to always have several chains in stock. Each of them should be operated with a rolling distance of no more than 600 km. After which the bicycle chain is replaced. A new, shortest one is put in its place. As a result, the life of not only all existing chains, but also the transmission of the two-wheeled vehicle is significantly extended.

Lock and solid chains

The locking chain is equipped with a special clamping device. It is not difficult to unhook and put it on - you just need to disconnect the lock. To find it, carefully examine the chain on both sides and find a split link. In principle, it will not be difficult to find it on a clean chain: there is a plier on top that fixes the link and does not allow it to move apart. Also, the manufacturer's inscription is usually stamped on the lock link. If you can’t find the lock for a long time, then either the chain is dirty, or it is lockless, or solid.

Bicycle chain with lock

You can’t just disconnect a bicycle chain without a lock: all the links on it look the same, however, they are also interlocked. This causes great inconvenience during cleaning; for example, it is necessary to carry out “general cleaning” in a solvent. In the case of the keyhole, everything is simple - steal it and put it in kerosene. A solid bicycle chain, even removed from the sprockets, will remain hanging on the frame.

In terms of removal, a chain with a lock is certainly more convenient than its counterpart. However, for some reason the fastening may become loose: the pincer may fly off, and the link itself may come loose. Bicycle chains without locks do not have such weak points, and if it breaks, then the matter is solely in its quality.

When should you change your bicycle chain?

A good bicycle chain lubrication can significantly increase the service life of the entire system responsible for movement. At the same time, you need to be able to notice the moments when it begins to need maintenance or repair.

Excessive wear on a bicycle chain not only causes constant discomfort while riding, but also causes active deformation of the chainrings. If a worn chain is left unattended for a long period of time, it is guaranteed to lead to the need to replace a whole set of expensive mechanisms.

In order to assess its condition as objectively as possible, it is necessary to look not at the mileage, but first of all to measure the length of all its links. The chain length in normal condition is approximately 305 mm. The reason for its replacement is its stretching to 308 mm or more.

How to tension a chain on a simple bicycle

By “simple” we mean a bicycle with one rear driven sprocket. This can be either the classic design of a single-speed bicycle, which has one sprocket in front and one in the rear, and there is no ability to change gear ratios, or bicycles with a planetary hub. Although the latter have the same design (with one driving and driven sprocket), but due to the complex mechanism of the rear hub, which, in fact, is an analogue of a car’s gearbox, it is possible to change speeds. These schemes have one thing in common: the chain can be tensioned by shifting the axis of the rear hub. More on this later.

• How to understand that the chain needs to be tightened

On bikes that don't have derailleurs or have a planetary hub, checking chain stretch is fairly easy. Pull it down with your fingers until it stops. The distance it has traveled should not exceed 10-15 mm.

But it should be emphasized that the chain should not be overtightened. Therefore, if the chain travel is less than 5 mm when pulled down, it should be loosened. Excessive tension results in greater pedaling effort and increased wear on the transmission, while too little tension can cause the transmission to fly off the front or rear sprockets.

• Tension procedure

Turn the bike upside down. We loosen the bolts or eccentrics that secure the rear wheel in the grooves (dropouts) and tighten or loosen the chain tension by moving the wheel further or closer from the drive sprocket. Don't forget that it shouldn't be overtightened. After we have adjusted the required tension, we check the perpendicular position of the rear hub axis relative to the longitudinal axis of the bicycle. Tighten the fixing bolts or eccentrics.

There are times when it is no longer possible to move the bushing back. This tells us that the bicycle chain is too stretched and it would be advisable to replace it. But there is another way out. For this we need a squeeze. This device is designed to separate chain links. Thanks to it, you can remove several links, thereby shortening the chain. If you have a similar case, then a separate paragraph below in the article will contain brief instructions on how to remove unnecessary links.

Bikes without chain lock

To remove the part, use improvised means, performing the following manipulations:

• attach a regular vice to the table;
• The chain is fixed in them by placing a nut on one side so that the hole of the nut and the pin correspond;
• the screw is attached with a head on the opposite side;
• the pin is pushed into the nut hole when the vice is clamped with a ball.

Advice:

To remove a part, it is not enough to open only one side. You need to move the link to remove it or continue trying by adding a ball.

After a successful attempt (or an unsuccessful one), the cyclist understands how indispensable a squeeze is: if a chain with a lock that requires repair can be removed from the bicycle, then, regarding this part without a lock, it is extremely difficult to do this without a squeeze. The given instructions will help out in force majeure situations, but you need to work hard.

Video: How to disconnect, rivet, open a bicycle chain. Remove the lock.

How to shorten a chain without squeezing?

If there is no special tool, you can use any sharp object with a small enough diameter to push out the connecting pin. This could be a nail, an awl, or any other strong steel pin that can withstand a hammer blow. In addition, you will need a stand - for example, a brick.

You must act carefully so as not to bend the plates of the chain links. To ensure safety, the top plate must be supported by inserting a nut or other strong piece of metal inside the link. Most likely, the chain will first have to be removed from the bicycle. And for prevention, it will be possible to remove the rear wheel, clean it, lubricate it and install it in place.