How to remove a sprocket from a bicycle crank

Puller application

A special device that is designed to dismantle hard-to-remove parts is called a puller. This is a no brainer. In our case, to remove the connecting rod from the bicycle carriage shaft. It looks like this.

remove, sprocket, bicycle, crank

This type of connecting rod puller provides the ability to remove the pedal as well.

The connecting rod is held on to the shaft by a heavy-duty 8mm head bolt. It is not difficult to unscrew the bolt. But the difficulty is that the connecting rod sits on the shaft with a slight interference fit and has a tapered fit. Very often, in wet weather, water and dirt penetrate into the interface between the connecting rod and the shaft. Then it sticks to the shaft and it is almost impossible to remove the connecting rod. But in our toolbox, of course, there is a puller for connecting rods, which is a complex turning part. a screw with a two-level head for an open-end wrench and a socket. A cunning nut with external and internal threads is screwed onto the screw. It takes a long time to explain, but in the photo everything is very clear.

How to unscrew the bicycle cranks by yourself?

Probably, no part of the bike has more load than the connecting rod. On the models of recent years of release, for their manufacture, instead of steel, various alloys began to be used. This makes the structure lighter and more robust. Sometimes, to reduce weight, the connecting rods are made hollow, they are also made of composite material, which somewhat increases the cost of the bike itself, but also greatly facilitates it.

On inexpensive models of bicycles, a non-separable block of connecting rod-sprockets is made. An inconvenient and impractical option, because when replacing the sprockets, you will have to change both connecting rods at once. If you started to repair the carriage or replace the stars, then we recommend that you immediately replace both connecting rods with a design that involves a detachable connection of the connecting rod and sprockets.

Dismantling technology

Here is a step-by-step photo guide explaining the process visually.

When is it necessary to dismantle the connecting rod

The connecting rod does not imply any maintenance and special care. Its replacement is carried out only in the case that we described above and in case of mechanical damage. The need for dismantling arises when we need to get to the carriage or completely disassemble it for lubrication, flushing or adjustments.

Also, sometimes after the rain, an unpleasant creak occurs, which is caused by the ingress of sand into the connecting rod-shaft interface. In this case, you have to disassemble it and clean the seat.

It’s just that the connecting rod will not be removed and for this you need to apply either a certain manual dexterity or a special puller. We will tell you about these methods in detail.

Dismantling without puller

In this case, scientific and technological progress offers few options.

As you can see, we cannot get away from advanced technologies and progressive methods. Even in such a seemingly trifling matter.

Disassembly procedure for transmission cassette

Removing the rear of the transmission is easy. Sprocket Removal Tool Kit Next.

  • Open-end wrench for wheel dismantling;
  • Adjustable cassette wrench;
  • Whip;
  • Cassette remover.

The first step is to dismantle the rear wheel of the bike. Using a wrench, unscrew the nuts, then remove the chain from the rear sprockets. For some modifications (for example, for MTB), removing the wheel is literally a matter of a minute, since it is attached to the eccentric.

Install the puller onto the spline nut. The “whip” is used to keep the cassette from spinning. Use an adjustable wrench to rotate the puller. The direction of rotation of the whip is in the opposite direction.

Removing the nut is not easy. You will also have to work hard to install it in place. After the nut has been unscrewed, the cassette is detached from the wheel without effort. It remains only to assess the condition of the cassette and determine which sprocket is out of order.

The outer sprockets can be removed immediately after the bicycle cassette has been removed. They are cleaned and carefully examined to assess the degree of wear. Worn out. replace.

How to remove and put a system star

The system is a set of three chainrings. If you often have to ride at speed, then most likely the largest sprocket will wear out. Conversely, with frequent off-road trips, wear will affect the first (smallest) sprocket. By analogy with the second, middle sprocket, when the bike is used at medium speeds in conditions of a dirt road or bad asphalt.

On a modern mountain or road bike, the system is collapsible, so it will not be difficult to dismantle all the stars. Before work, you need to carefully prepare, namely, collect all the necessary tools:

  • connecting rod puller;
  • spanner key;
  • hexagons;
  • new detail;
  • clean cloth and grease.

Removing the system from the bike: 1. Place the frame in an upright position. If you have a stand, you should definitely use it.

Remove the right crankshaft axle fixing bolt with a hexagon.

Unscrew the pedal from the right crank arm. A standard open-end wrench is suitable for this.

Insert the puller into the connecting rod to remove it from the carriage. To begin with, we screw the tool all the way into the thread. It is important that it sits flat on the shaft, otherwise the axle can be damaged when unscrewing the connecting rod. Place the spanner wrench on the puller and screw it in until it stops until the connecting rod is pushed out of the carriage shaft.

The two stars are usually attached to each other on a so-called spider. The big one remains on the connecting rod itself. Unscrew them with the hex bolts.

This is how the system understands. Replacing and installing looks like the reverse process:

  • Install the desired sprocket on the spider and tighten the fasteners. Change the large part together with the right connecting rod and screw the medium and small sprockets onto it.
  • Next is the installation of the connecting rod on the carriage. Before this, it is advisable to clean and lubricate the carriage shaft.
  • Carefully place the chain on the system and screw in the connecting rod by rotating the puller in the opposite direction.
  • Tighten the fixing nuts and fit the plugs.
  • Screw the pedal onto the connecting rod.

When replacing one star, it is advisable to clean the old ones. Lightly grease the system components before installing on the carriage.

So just replace the chainring. All of the listed tools are required. The connecting rod is a delicate thing, and a hammer and chisel is not the best option for removing it. The same goes for keys. It is difficult to replace them with pliers, besides, the nuts can easily “eat”. Well, without hexagons, it is impossible to disassemble the system into parts.

At the end, check the operation of the transmission. whether everything is in order and whether it is necessary to adjust the speed switch.

Removing the cassette

To remove the sprocket cassette from the rear axle of the bicycle, you must:

  • Turn the bike upside down and place it on a flat solid surface, resting on the handlebar and saddle;
  • Unscrew the axle fastening nuts and remove the rear wheel and chain;
  • Install the puller on the slotted nut and put on it an adjustable wrench (or a suitable socket wrench) with an extension;
  • Put a whip on the largest star;
  • Holding the whip with one hand, unscrew the spline nut with the other counterclockwise;
  • Remove the cassette and disassemble it, carefully placing all the stars and intermediate washers in order.

If in the process of subsequent assembly of the cassette the correct sequence of insertion of the spacers is not observed, this can lead to problems when switching speeds while the bike is moving.

Bicycle sprocket care

The rubbing mechanisms of the bicycle must be periodically lubricated and cleaned of dirt. This extends the transmission life and makes driving safer. After several trips on bad roads, forests or, moreover, off-road, the bike is literally overgrown with mud. If the frame and wheels can be washed clean, the contamination of the bike mechanism is simply not visible. Therefore, after such trips, it is not superfluous to inspect the large and take measures to clean the parts, and, if necessary, replace the worn out components.

You can clean the bike cassette according to this algorithm.

  • Release the rim brake. Alternatively, remove the caliper on the disc brake;
  • Remove the rear wheel;
  • Examine the cassette carefully. If it is heavily soiled, you will have to remove it from the wheel and clean it. With a little dirt, you can clean the bicycle cassette from dirt without removing it from the wheel;
  • Use special narrow brushes for cleaning, which make it possible to penetrate between the gears and clean out what should not be there. In addition, it is much more convenient than penetrating the gaps with a rag;
  • An old toothbrush is great for cleaning the teeth of the sprockets;
  • Wipe the surfaces with a cloth dampened with kerosene. Then apply lubricant to the teeth and pits;
  • It is advisable to clean the sprocket cassette and chain at the same time. This is the only way to achieve the desired result.

The system is cleaned in the same way. You don’t need to remove the bicycle wheel, but you need to work with the utmost accuracy so as not to accidentally knock off the switch setting.

Instruments

In order to remove the rear sprockets from the bike, you must:

Bicycle sprocket options

Cassettes are consumable items and must be replaced periodically. On average, from 5 to 15 thousand km of driving.

How to remove a rear sprocket on a speed bike

The drivetrain plays a very important role in the operation of the entire bike, so you must carefully monitor the wear of individual parts of it. This is especially true for the rear wheel sprockets, which fail over time. A worn out sprocket must be replaced as soon as possible, and it will not be difficult to do this.

Before starting the replacement process, get yourself the tools you need to use. It:

  • Whip
  • Cassette remover
  • Rozhkova and adjustable wrenches

First, remove the rear wheel from the bike. This is very easy to do. Unscrew the nut with a wrench and release the chain. Owners of mountain models just need to press on the special mount and the wheel will be dismantled. Next, we install a removable device on the slotted nut of the cassette. Here we need a whip to prevent the cassette from turning. While we rotate the puller with an adjustable wrench, hold the largest star with a whip.

Using a nut, unscrew the cassette and remove it from the wheel. We carefully examine the stars and determine which one has become unusable. Start with the smallest and end with the largest. The bike drivetrain is designed in such a way that you can only replace the worn out sprockets and not the entire cassette. Therefore, having examined the cassette, you remove the used parts from it and replace them with new ones. It is very easy to pull the star out of the cassette, this is facilitated by special rivets. The main thing is to carefully remember the order of the stars, so as not to get confused with their installation back. In the configuration of some bikes, you may find so-called “spiders”. It is a group of several stars that are inextricably linked. In this case, you will have to replace the entire spider. Many cyclists are faced with the following problem. After replacing several stars, there is great discomfort in the operation of the chain. This is due to the fact that the chain has already passed a certain mileage, has worn out and now it is difficult for it to interact with new parts. Therefore, experts recommend the simultaneous replacement of the chain and worn sprockets. This greatly minimizes the complexity of your bike’s drivetrain.

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If you own a single speed bike, the process of replacing the rear chainring will be simplified to a minimum. You just need to open the retaining ring. If your own ring has become unusable, it must be replaced immediately, even if you are not going to replace the stars in the near future. Otherwise, the chain will lose its fixation, and this threatens with backlash. The process of replacing the ring is very simple, you do not need to perform the slightest forceful manipulations. Therefore, if you are talking about a single-speed bike, everything is very easy and understandable here. However, the owners of such models should carry out the process of dismantling the cassette only if one or more of the largest stars have worn out. If a small asterisk begins to fail, this is not a cause for concern. Whatever you ride, remember that both the simplest road bike and the super-fast bike need a proper transmission. A badly worn chain and stars will not allow you to drive even a couple of meters. Pay close attention to the mechanics and promptly replace worn-out parts. A working bike is the main guarantee of your safety and a cool, trouble-free ride!

Removing the ratchet

On some bicycles, the sprockets can be set like a ratchet. In order to remove it, you must:

  • Remove the rear wheel and chain;
  • Insert the puller into the ratchet bushing;
  • Put an extension wrench on the puller and turn the ratchet counterclockwise.

Next, you need to disassemble the block of stars, carefully laying out all the parts in order.

How to remove sprockets from the rear wheel of a bicycle?

It is absolutely not difficult to disassemble the device for replacement, but you should be careful and have a couple of free hours in stock.

In some situations, the disassembler initially spends 15 minutes, and another person without the necessary skills can handle it in 1-2 hours.

That is why it is difficult to answer the question of how much time can be spent on a laborious process. In most, all stars have the same parsing method, since they have almost the same structure.

Helpful hints for parsing:

  • How the parts are removed, in this order, they should be installed. This advice will help from confusion and waste of extra time, which can be spent remembering where a certain detail came from;
  • After parsing, every detail needs to be inspected, perhaps it does not require replacement, but a banal cleaning is simply necessary.

How to change sprockets on a bike?

The bicycle is becoming more and more popular nowadays. This is due either to paid parking and the high cost of gasoline, or to the currently fashionable healthy lifestyle.

But almost everyone loves to ride a bike, but not everyone knows how to properly care for it. Naturally, over time, parts fail and they should be replaced with new ones or serviced.

In this article, we will talk about bicycle sprockets and how you can disassemble and care for them.

Change the sprockets on the rear wheel of the bike

The drivetrain plays a very important role in the operation of the entire bike, so you must carefully monitor the wear of individual parts of it. This is especially true for the rear wheel sprockets, which fail over time. A worn out sprocket must be replaced as soon as possible, and it will not be difficult to do this.

Before starting the replacement process, get yourself the tools you need to use. It:

  • Whip
  • Cassette remover
  • Rozhkova and adjustable wrenches

First, remove the rear wheel from the bike. This is very easy to do. Unscrew the nut with a wrench and release the chain. Owners of mountain models just need to press on the special mount and the wheel will be dismantled. Next, we install a removable device on the slotted nut of the cassette. Here we need a whip to prevent the cassette from turning. While we rotate the puller with an adjustable wrench, hold the largest star with a whip.

Using a nut, unscrew the cassette and remove it from the wheel. We carefully examine the stars and determine which one has become unusable. Start with the smallest and end with the largest. The bike drivetrain is designed in such a way that you can only replace the worn out sprockets and not the entire cassette. Therefore, having examined the cassette, you remove the used parts from it and replace them with new ones. It is very easy to pull the star out of the cassette, this is facilitated by special rivets. The main thing is to carefully remember the order of the stars, so as not to get confused with their installation back. In the configuration of some bikes, you may find so-called “spiders”. It is a group of several stars that are inextricably linked. In this case, you will have to replace the entire spider. Many cyclists are faced with the following problem. After replacing several stars, there is great discomfort in the operation of the chain. This is due to the fact that the chain has already passed a certain mileage, has worn out and now it is difficult for it to interact with new parts. Therefore, experts recommend the simultaneous replacement of the chain and worn sprockets. This greatly minimizes the complexity of your bike’s drivetrain.

If you own a single speed bike, the process of replacing the rear chainring will be simplified to a minimum. You just need to open the retaining ring. If your own ring has become unusable, it must be replaced immediately, even if you are not going to replace the stars in the near future. Otherwise, the chain will lose its fixation, and this threatens with backlash. The process of replacing the ring is very simple, you do not need to perform the slightest forceful manipulations. Therefore, if you are talking about a single-speed bike, everything is very easy and understandable here. However, the owners of such models should carry out the process of dismantling the cassette only if one or more of the largest stars have worn out. If a small asterisk begins to fail, this is not a cause for concern. Whatever you ride, remember that both the simplest road bike and the super-fast bike need a proper transmission. A badly worn chain and stars will not allow you to drive even a couple of meters. Pay close attention to the mechanics and promptly replace worn-out parts. A working bike is the main guarantee of your safety and a cool, trouble-free ride!

Star stripping process

How to change the rear sprocket on a bike after the first stage has already been passed.

  • Removing the mount.
  • Detach the cassette from the rear wheel.
  • We make a thorough inspection.
  • Determining Wear Sprockets.
  • We remove the worn out product.
  • Pay attention to the arrangement of the stars and the sequence of fasteners and washers between them.

Cassettes compare favorably with ratchets in that each worn part can be freely removed separately.

A separate recommendation would be to replace the chain, which is also worn out, along with the sprocket.

Procedure

Step-by-step instructions for parsing:

  • The bike is installed with the wheels upwards and is in a stable position. The bike must stand on a flat surface and not carry out additional movements that can adversely affect the removal of parts;
  • We remove the wheel located at the back, this can be done using a wrench of the appropriate size. The chain for parsing the star is removed in order not to interfere;
  • Use a whip to fix the cassette in one place, untwist the cassette itself using a puller put on the nut;
  • After that, we remove the plastic ring, which serves as a kind of protection and establish a further front of work (directly install a new one or try to clean and lubricate the parts).

How to replace a sprocket on a bike?

Replacing the sprocket should start with removing the old one, respectively, only then start the installation. If an old part is installed, it must be cleaned and lubricated, only then install.

  • We put on a protective plastic ring;
  • If the stars themselves are not fastened to each other, then they should be worn one at a time, starting with a large one and ending with a small one. We install small rubber pads between the stars;
  • We screw it with a nut, this must be done directly with a wrench. Twisting is carried out clockwise;
  • We fix the nut and check the movement of the nut.

How to remove and put a system star

The system is a set of three chainrings. If you often have to ride at speed, then most likely the largest sprocket will wear out. Conversely, with frequent off-road trips, wear will affect the first (smallest) sprocket. By analogy with the second, middle sprocket, when the bike is used at medium speeds in conditions of a dirt road or bad asphalt.

On a modern mountain or road bike, the system is collapsible, so it will not be difficult to dismantle all the stars. Before work, you need to carefully prepare, namely, collect all the necessary tools:

  • connecting rod puller;
  • spanner key;
  • hexagons;
  • new detail;
  • clean cloth and grease.

Removing the system from the bike: 1. Place the frame in an upright position. If you have a stand, you should definitely use it.

Remove the right crankshaft axle fixing bolt with a hexagon.

How To Remove A Crank Set

Unscrew the pedal from the right crank arm. A standard open-end wrench is suitable for this.

Insert the puller into the connecting rod to remove it from the carriage. To begin with, we screw the tool all the way into the thread. It is important that it sits flat on the shaft, otherwise the axle can be damaged when unscrewing the connecting rod. Place the spanner wrench on the puller and screw it in until it stops until the connecting rod is pushed out of the carriage shaft.

The two stars are usually attached to each other on a so-called spider. The big one remains on the connecting rod itself. Unscrew them with the hex bolts.

This is how the system understands. Replacing and installing looks like the reverse process:

  • Install the desired sprocket on the spider and tighten the fasteners. Change the large part together with the right connecting rod and screw the medium and small sprockets onto it.
  • Next is the installation of the connecting rod on the carriage. Before this, it is advisable to clean and lubricate the carriage shaft.
  • Carefully place the chain on the system and screw in the connecting rod by rotating the puller in the opposite direction.
  • Tighten the fixing nuts and fit the plugs.
  • Screw the pedal onto the connecting rod.
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When replacing one star, it is advisable to clean the old ones. Lightly grease the system components before installing on the carriage.

So just replace the chainring. All of the listed tools are required. The connecting rod is a delicate thing, and a hammer and chisel is not the best option for removing it. The same goes for keys. It is difficult to replace them with pliers, besides, the nuts can easily “eat”. Well, without hexagons, it is impossible to disassemble the system into parts.

At the end, check the operation of the transmission. whether everything is in order and whether it is necessary to adjust the speed switch.

How to remove a sprocket from a bike

The sprockets of a speed bike are the main parts of the gearshift system that provide the gear ratio of the drivetrain. According to the degree of influence, they are divided into leaders and followers. The first are located at the connecting rod pair and are called the system. The driven ones are located on the rear wheel hub and are divided into cassettes and ratchets by design.

Over time, the stars wear out, as a result of which they need to be completely or partially replaced. The second option is more common in practice, since the wear is uneven. The most frequently used transmissions are subject to it. The problem, of course, requires a timely solution, otherwise driving will turn into torment. The chain will seize or skip over worn sprockets. Many modern models allow you to remove the sprocket and put it separately on the system or cassette without replacing the entire assembly. Read on how to do this.

Changing the sprocket on the rear cassette

The set of transmission stars of the rear wheel is several times larger than the front one. The standard kit includes eight components, and in high-speed models (or on a sports bike) there are 9 or 11.

It is worth mentioning right away that a cassette or ratchet can be placed behind. The cassette is a modern version with an internal splined mounting on the hub axle. Ratchets, as an outdated option, can only be found on a budget high-speed bike. The set usually includes 5-7 gears. External fastening, threaded, removable tool differs from cassette.

The fundamental difference from the cassette is its integrity. it is impossible to change the star separately on the ratchet. Here, either all at once, or nothing at all. Therefore, we will consider how to install a new sprocket on the cassette.

As with replacing the leading stars, special tools are required here:

  • cassette remover;
  • chain whip-retainer;
  • adjustable wrench or head;
  • optional: wrenches, chain release.

When removing the cassette, you will need to first remove the rear wheel from the bike and then the axle nuts. At the same time, when replacing the sprockets, you can also clean the chain. to remove it, you need a squeeze.

Sequence of work: 1. Remove the rear wheel with a 15 wrench, with eccentric fastening everything is simple. unclench the lever and loosen the fixing nut.

The next step is to unscrew the axle nuts. You will need a 17 key for it. To roll the mount off the rotating axis, we put on an additional nut to fix the axis.

Unscrew the bearing cone and pull out the bearing from the opposite side.

Remove axle with taper and bearing. About the bushing components: if necessary, you can immediately replace them with new ones.

Place the whip on the largest (lowest) star. We will rotate it clockwise.

Use an adjustable wrench or a head to turn the puller counterclockwise.

It is so easy to shoot a cassette at home. Most modern star sets are collapsible, you can install one or two new stars. However, in case of severe wear, when half of the cassette is worn off, it makes no sense to change them separately. Difficulties can also arise if the largest sprocket has been erased, on which all the others are usually attached.

Is it possible to dismantle a cassette without a puller and a whip? In principle, this can be done with a slotted tube and a spanner. The whip can be made by yourself by welding a piece of an old chain to the metal handle of the knife.

When replacing individual stars, especially the middle ones, we disassemble the cassette carefully so as not to lose all the spacer and fixing washers. Everything is easier with a cassette on a spider. it does not need to be disassembled, the star is removed separately from its mount.

Rear transmission assembly:

  • Put and fix a new star, assemble a cassette.
  • Using a puller, install the drum on the spline mount of the sleeve. Before tightening, it is necessary to align the drum so that the connection does not wear out under load. The whip is not needed here. just rotate the puller clockwise with effort.
  • Assemble the bushing: insert the axle from the cassette side, then the bearing and the cone on the left side, fix the axle with nuts.
  • Put on the chain and put on the rear wheel.

Check the operation of the transmission and adjust the rear derailleur. Timely replacement of sprockets will save you from unpleasant surprises on trips and will generally increase the resource of the bicycle transmission.

In what situations it may be necessary to dismantle the connecting rod?

The connecting rod is a fairly simple part that does not need much maintenance and care. Component replacement is most often done due to mechanical damage. The need for removal may also arise when it is necessary to gain free access to the carriage, perform adjustments or flush the system.

Often, after driving in rainy weather, unpleasant creaks occur in the carriage area, the cause of which is the ingress of sand and dirt into the nodal mechanism. In this case, it may be necessary to remove the connecting rod to clean the seat.

In general, the connecting rod itself is not dismantled. To do this, they resort to the operation of a special puller or the use of improvised methods, which will be discussed below.

Installing the connecting rod

After dismantling the part and performing all planned manipulations, it is necessary to return the structural element to its original place. Before carrying out work, it is advisable to clean all surfaces and joints, and then process them with a thick lubricant. This approach will allow the connecting rod to be installed evenly and will greatly facilitate the work if it is necessary to dismantle it again.

During installation, the part must be deeply fitted onto the shaft. This will avoid the appearance of backlash during movement. If the connecting rod is not firmly fixed, the socket will gradually become unusable. For reliable fastening of the part, a force of about 50-70 Nm is sufficient.

Puller application

A special device that is designed to dismantle hard-to-remove parts is called a puller. This is a no brainer. In our case, to remove the connecting rod from the bicycle carriage shaft. It looks like this.

This type of connecting rod puller provides the ability to remove the pedal as well.

The connecting rod is held on to the shaft by a heavy-duty 8mm head bolt. It is not difficult to unscrew the bolt. But the difficulty is that the connecting rod sits on the shaft with a slight interference fit and has a tapered fit. Very often, in wet weather, water and dirt penetrate into the interface between the connecting rod and the shaft. Then it sticks to the shaft and it is almost impossible to remove the connecting rod. But in our toolbox, of course, there is a puller for connecting rods, which is a complex turning part. a screw with a two-level head for an open-end wrench and a socket. A cunning nut with external and internal threads is screwed onto the screw. It takes a long time to explain, but in the photo everything is very clear.

Dismantling technology

Before starting the process, sprinkle the mating point of the connecting rod and shaft with a magic solution of WD-40. It will dissolve the remaining dirt and make the process easier. You can just as well use BSK brake fluid if it is lying around in your garage. You can do the same if the bolt is not unscrewed.

Important! Make sure that the puller rod is less than the diameter of the square on which the connecting rod is fitted. Otherwise, the operation will fail. the thread will break. Unscrew the mounting bolt. We screw the puller into the connecting rod to the limit, making sure that the puller rod is unscrewed as much as possible. We tighten the puller bolt smoothly and without jerking, otherwise there is a risk of damaging the thread.

Here is a step-by-step photo guide explaining the process visually.

Technical questions and answers

00:30 What holds the sprocket cassette on the rear wheel of the bike

00:50 Special puller for the rear wheel sprocket cassette nut (175 rubles)

01:15 Why not buy the cheapest cassette remover

01:30 Why can’t you unscrew the cassette “just like that”

02:20 How to keep the rear wheel sprocket when unscrewing

02:30 trying to hold the wheel cassette with a rag

03:25 we hold the wheel sprockets with the old chain

04:00 How to “screw up” a bicycle tire and rim when unscrewing the cassette

04:50 we hold the rear sprockets with a special whip when unscrewing

05:10 We make a whip to hold the cassette with our own hands from scrap materials

06:40 Tips for making a whip for removing stars

08:10 Unscrew the rear wheel cassette nut using a puller and a whip

09:40 Remove the sprocket cassette from the ratchet

10:15 How to put the sprocket cassette on the rear wheel ratchet correctly

11:35 How to tighten the nut to hold the cassette in the rear wheel

12:20 IMPORTANT! How to TIGHTEN the rear wheel ratchet cassette so nothing breaks

Step-by-step instructions on how to remove a pedal from a bike without a puller

After finishing the preparatory work, we proceed to dismantling:

  • First of all, slide the system towards the steering wheel, this position is considered to be working.
  • Gently unscrew the pedals from the crank with an adjustable wrench. Which way to unscrew the pedals on the bike? Right. counterclockwise, left. in the direction.
  • Remove the end cap to expose the locknut. Use a small flat-blade screwdriver to do this.
  • Smoothly unscrew the nut, holding the axle with the second key.
  • Also, a washer remains at the end, which must be removed.
  • At this point, unscrew the cone.
  • It remains to remove the platform from the axle, try to control the position of the bearings in order to exclude their sudden fall.

Note! Each pedal has a unique thread. The axis of the right pedal is unscrewed counterclockwise, and the left one. vice versa

Difficulties during dismantling arise due to external factors or under heavy loads.There are two options for solving such problems:

  • treat the elements with kerosene or solvent. After soaking in such liquids, dirt that hinders rotation can be easily removed;
  • you can heat the axle and connecting rod, there will be a slight deformation of the metal, and the axle can be easily removed along the thread.
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Important! In order to avoid damage to the thread, manipulations with the axis are carried out extremely carefully, otherwise the next dismantling will be difficult. In general, the process of removing the pedals is quite simple, it is much more important to prepare the necessary tools and materials, as well as follow the instructions.

It is recommended that you return parts by hand first. and only at the end tighten with special wrenches

In general, the process of removing the pedals is quite simple, it is much more important to prepare the necessary tools and materials, as well as follow the instructions. It is recommended to return the parts to their place first by hand, and only at the end to tighten with special wrenches.

Find your sport

The need to remove the connecting rod appears subject to its replacement, the installation of new stars, the adjustment or dismantling of the carriage. The connecting rods are displaced with the appropriate key. a connecting rod puller.

The tool is presented as a screw having a two-piece head. One section looks like a socket wrench, the second. faces for an open-end wrench. A nut of a unique configuration is screwed onto the screw, equipped with a double-sided thread from the inside and outside. Usually, the puller is supplemented with an adapter, which is necessary when working with carriage elements of spline connections.

It is necessary to make the purchase of new connecting rods taking into account their manner of attaching directly to the carriage. The mount is square and slotted. The latter option assumes several standards. In parallel, the length of the purchased connecting rod is taken into account. Thus, excessive length of the connecting rod creates obstacles when the vehicle is moving over rough terrain. In turn, short connecting rods will require additional effort from the rider.

When to remove the connecting rod

Usually, the connecting rod does not need any special maintenance or service. This part can be replaced in three cases:

  • Since inexpensive bike models are equipped with a non-separable block of a connecting rod together with sprockets, the design is completely replaced. Both new sprockets and two connecting rods are installed as a whole. Considering that a non-separable unit is considered a very inconvenient and impractical option, it is advisable to replace it with a design with a detachable connecting rod and stars.
  • Subject to mechanical damage. The inevitability of removing the connecting rod is due to the need to get to the carriage part, which sometimes requires disassembly, lubrication, washing, adjusting settings.
  • When an unpleasant squeak occurs, which usually appears after rainy weather. As a result, sand gets into the connecting mechanism. Then the connecting rod is disassembled, and the seat is cleaned.

A step-by-step guide to removing the crankset from a bike

To remove the connecting rod from a personal bike, the sequence given must be followed.

Crankset Removal & Installation. Bike

  • Pulling out or unscrewing the boot-cap. A certain part of the plugs can be easily pry off with an ordinary screwdriver, and there are those that require unscrewing.
  • Unscrewing the bolt / nut pulling the connecting rod directly to the carriage, then removing the washer, if equipped. The procedure is carried out with a spanner wrench, mainly at 14. Alternatively, you can use a hexagon at 8, provided a square connection, and by 10, it is suitable for a spline connection.
  • Using the connecting rod puller to completely remove the inner screw.

Attention! Since the square connection requires a narrower internal screw, the adapter plate on the key plane is removed. The spline connection is characterized by a wider hidden screw, so the adapter plate is put on. Be vigilant, since there are known moments when the adjuster left the pad, which is fraught with its emphasis on the connecting rod instead of the intended carriage axis. As a result, the thread on the connecting rod underwent a breakdown.

  • Screwing the puller into the connecting rod. The puller is fully tightened. If not tightened fully, there is a high likelihood of breakage and damage to the thread.
  • Tightening the internal screw of the puller. You will need a wrench to turn the screw clockwise. There will be a noticeable displacement of the connecting rod from the point.
  • As soon as it was possible to remove the connecting rod, the puller is unscrewed. If you find it difficult to remove the connecting rod, there is no need to overdo it, as the thread will break and dismantling will only become more difficult. In this case, it is advisable to grease the connection or spray it with WD-40 aerosol, and then try again.

In the absence of a connecting rod puller, it is allowed to resort to unscrewing the bolts that tighten the connecting rod to the carriage. Some hundreds of meters can be driven without parts. Such a short trip makes the connecting rod easy to remove. It remains only to knock on it with a wooden block or stick. Sometimes a different method is used: the connecting part of the connecting rod with the carriage is somewhat heated. Do not use burners as the connecting rod will be damaged. Heating is done by pouring hot water.

Removing the Bicycle Cranks

Remove or unscrew the dust cap. It is enough to pry some plugs with a screwdriver, and some will have to be unscrewed.

Unscrew the bolt (or nut) that pulls the connecting rod to the carriage and remove the washer (if any). To do this, you need a box wrench (usually 14), or an 8 hexagon with a square connection or a 10 hexagon with a spline connection.

Take the crank puller and remove the inner screw completely.

Please note that with a square connection, the inner screw should be narrower and the adapter cover must be removed (if it is on the key), and with a slotted connection it is wider, respectively, the adapter cover must be put on. Be careful, there have been cases when people did not remove the cover, as a result, it rested against the connecting rod itself, and not against the carriage axis. As a result, they tore off the threads on the connecting rod.

Screw the puller into the connecting rod. Tighten the puller all the way, otherwise it may break off and damage the threads.

Tighten the inner screw of the puller with a wrench. Turn it clockwise and you will see how the connecting rod leaves its place.

After removing the connecting rod, unscrew the puller.

If the connecting rod does not give way, do not use too much force, otherwise you can break the thread and then it will be even more difficult to remove it. Refill the compound with oil or WD-40 and try again. When the connecting rod puller is not at hand, you can unscrew the bolts tightening the connecting rod and the carriage and drive several hundred meters without them. After that, the connecting rod should be easily removed if you lightly tap on it with something weighty (through a wooden block or stick). You can also heat the junction of the connecting rod and the carriage, but do not use any burners for heating, they will harm the connecting rod, heat by pouring boiling water.

And one more thing, if you need to remove the pedals, then it is better to unscrew them before removing the connecting rods, it will be easier.

Installing Bicycle Cranks

Before installing the connecting rods, clean the joints on it and the carriage from dirt. Then lubricate the inside of the connecting rod with grease.

Place the chain on the bottom bracket assembly (when installing the right crank arm), slide the crank arm onto the axle and tighten the tightening screw.

When putting on the opposite connecting rod, do not confuse its position.

The bolts must be tightened very tightly. If it is not enough to tighten them, then backlash may form during driving.

Slide the dust caps and chain over the sprocket.

Removing the connecting rods

On inexpensive bicycles, the front sprocket block is made in the form of a non-separable structure, combined with the right connecting rod, and then when replacing the sprockets, both connecting rods have to be replaced. On mid to high end bikes, chainrings can usually be detached from the right crank arm, meaning they can be changed independently as the teeth wear out.

You have to remove the connecting rods (one or both) in order to get to the carriage (to adjust or replace it). The connecting rods themselves do not require any adjustment.

Usually new connecting rods are purchased together with chainrings. When buying new connecting rods, it must be borne in mind that there are several types of carriages, differing in the type of axle. Choose connecting rods that are compatible with your existing bottom bracket. In addition, the connecting rods are available in different lengths (from 165 to 180 mm). Crank rods that are too long on a small frame can be inconvenient when riding on uneven terrain, and too short will require extra pedaling effort. Optimal connecting rod length. 170-175 mm.

The axle of the bottom bracket has a circular cross section (cranks for Shimano OCTALINK standard)

On carriages of this type, the axis has a circular cross-section, and there are 8 protrusions at the ends of the axis. The connecting rods are attracted by a special hollow bolt, under an internal hexagon by 10, and are protected from the outside from dirt by aluminum anthers. The boot is simply screwed into the connecting rod. The carriage axis is hollow and therefore traditional pullers do not work. they simply have nothing to rest against. It is necessary to use a special puller or universal Bike Hand YC-215A.

Connecting rods for ISIS carriages

Made to fit your carriage standard.

Types of connecting rods and carriages

The connecting rods have different mounting methods, which depend on the type of bottom bracket used. We examined in detail the types of carriages in this article.

The carriage axis has a square section

There are three possible variations:

    The connecting rod is of traditional design. On carriages of this type, the ends of the carriage axis have square sections. The connecting rods together with the boot (plastic ring) are attracted by a screw, which is screwed into the axle. The screw is visible in the middle. The screw has a hexagon socket of 8 mm. Mainly used in systems on Shimano Acera / Alivio / Deore (up to 2007) and Suntour Duro

The screw is covered with a boot. It differs from the previous design only in that the screw that attracts the connecting rod is located under the plastic plug. anther, which must be removed by poking.

The third type of crank is often used on very inexpensive bicycles. Here, the carriage axis also has square sections at the ends. But here the connecting rods are not attracted by the internal screw, but by the bolt. The bolt is usually located under the boot. The bolt can be unscrewed with a 14.

How To Remove a Bicycle Crankset Easily. Road Fixie MTB Bike Crank