How to remove a ratchet on a bicycle without a puller

Remove the left connecting rod

First, we start removing the left connecting rod, it is easier to remove it, since the right connecting rod is connected to an asterisk. Standard thread on both connecting rods.

First you need to remove the dust cap. Then unscrew the connecting rod bolt in the place where the connecting rod connects to the carriage. Most often, a hex wrench is needed, but there may be options. it all depends on the brand of the connecting rod.

  • You should see the threads inside the connecting rod and the bottom bracket shaft.

Unscrew the handle of the connecting rod puller slightly, as shown in the figure, the puller pusher should be hidden in its threaded part.

Screw the puller carefully into the connecting rod. The puller must enter to the full depth, as when removing the connecting rods, a lot of force will be applied to the threads.

Turn the puller handle clockwise, so the pusher will be screwed into place of the bolt securing the connecting rod. The connecting rod with some effort should be removed from the carriage.

Varieties of parts

Carriages are open and closed:

Closed. cartridges or capsule designs, with internal shaft and bearings.

The closed model is not disassembled and serviceable (with the exception of a few), in case of any breakdown, the part is replaced.

The advantage of the model is a low level of pollution.

The open carriage features screw-in bowls with bearings in the carriage tube of the frame and a rotating shaft.

This type of mechanism requires precise frame parameters, in case of inaccuracies, distortions occur and the degree of protection against external influences decreases.

The model can be disassembled and cleaned, proper maintenance of the bicycle carriage prolongs the operation of the mechanism for a long time.

The disadvantage of open parts is that they require constant maintenance and periodically warp the carriage shaft.

How to disassemble a connecting rod without a puller?

The simplest method is to use a special puller. If there is no such tool, then in order to disassemble, remove and repair it, you need to make some effort and skill. During the ride, dirt and dust gets into the attachment area of ​​this element, the element literally sticks to its attachment due to heavy loads. In this case, you need to know how to remove the cranks from the bike without using a puller. You can fix the problem and make repairs on your own, and this will help you get to the place of equipment repair.

In unsuitable conditions, you can try the following methods in order to remove the part. If you unscrew the nut or bolt that secures the connecting rod and drive a certain distance, then the element can be disassembled and removed much easier, and in the future, replace or adjust what is required. The method is to pour boiling water over it. Consequently, all dirt and dust will get wet and making repairs to the bike, it will be easier to remove the element. This option is also suitable when it is important to remove the pedals. It is important to know and not to be confused in which direction which pedal is unscrewed. The left pedal has a left-hand thread, and the right one, respectively.

If the bottom bracket of the bike requires adjustment, the cranks must also be removed from the bike. Other recommendations will also help in case of unforeseen breakdowns. If the cable of the gearshift or brake is damaged, you need to replace it with a new one, and if there is none, then tie the torn ends. Bicycle spoke failure is also a common problem. Then a wire with a diameter of about 2 mm will help. The end of the spoke next to the rim is crocheted, and then a piece of wire is inserted, which must be passed through the socket of the hub. This replacement is far from perfect, but it will allow you to reach the goal and the place where you can repair the equipment well. Regular viewing and maintenance of two-wheeled vehicles will avoid many of these problems and make the trip enjoyable.

Diagnostics of breakdowns or contamination

It is possible to determine the malfunction of the carriage by too obvious sliding or jamming, squeaks, heavy driving.

Knocking and seizing signals indicate damage to the bearing balls or cage. Squeaks can indicate a loose connecting rod wedge. If the pedal slips in the upper position while driving, this also indicates a weak wedge tension.

A defective part will not allow fast driving, worn bearings, dirt and lack of lubrication will constantly impede movement.

The bike assembly begins to loosen gradually due to broken bearing balls and shaft misalignment. To fix, you need to clean or replace the bracket.

Careful maintenance of the bike bottom bracket is a must before any long ride.

Removing the wheels

Loosen the nuts on the dropouts and remove the wheels.

  • The nuts must be loosened to such an extent that the wheels can be easily removed.

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Capsule carriage service

If the capsule carriage is damaged, it must be replaced with a new one. When choosing a model, it is necessary to clarify the parameters of the shaft and the type of connection with the connecting rod levers.

Open carriage cleaning

After removing the mechanism, the condition of the bearings in the bowl is diagnosed, all attachment points are wiped with gasoline from dirt:

  • Damaged parts are replaced with new ones.
  • The threaded part of the carriage is cleaned with gasoline or WD-40 and wiped with a dry cloth.
  • The attachment points are covered with a lubricant.
  • The bearings are inserted into place and covered with a new layer of grease.

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

  • 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 fastening 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.
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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.

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.

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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 junction of the connecting rod and 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 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.

When dismantling is necessary

You need to understand how to unscrew the cranks on bicycles in the following cases:

  • To gain access to carriage maintenance. remove dirt, lubricate.
  • Breaking. It may seem that this is impossible, but the element bends from the load, the spline is damaged. There are breakdowns at any point of the connecting rod, most often a breakdown of the thread for attaching the pedal is diagnosed.
  • Thread problems. Bicycle owners often overtighten it, or, on the contrary, there is not enough tightening, the fixation becomes loose. A solution is allowed. to cut a thread of a different diameter, but then the stock pedals will not enter the final hole. In addition, the threads will be damaged because the craftsman may try to pedal downhill and cut edges. In any case, the elements will have to be removed, and new ones installed in their place. Sometimes a part can be repaired.
  • When it is necessary to put, change the stars (or one of them). In modern models, it is not fastened by welding or rivets, but using bonks. The star is considered a consumable, which wears out over time, becomes inoperative. it is important to replace it.

problems with aluminum elements. If they are not of high quality, have a non-standard size, they quickly break down and are difficult to dismantle. Blame it all. diluted alloy and cheap materials.

To gain access to the carriage service If the connecting rod is broken If there are problems with the threads When it is necessary to install or replace the stars

With a puller

The process of dismantling the bicycle connecting rod with your own hands must be carried out in the following order:

  • Unscrew the boot-cap (sometimes it is enough to pull it out with a screwdriver. there is no thread on it).
  • Unscrew the bolt / nut that secures the element to the carriage and remove the washer, if present. Prepare in advance a spanner wrench (usually 14) or an 8 hexagon (if a square connection), a 10 hexagon (if a slotted mount).
  • Grasp the bicycle crank puller and unscrew the inner screw all the way. If a square fixation is provided, you will need to remove the adapter plate (if it is on the key), if it is slotted, then this adapter plate will be needed. This is important, because often the craftsmen do not remove the adapter and rest against the connecting rod itself, but not against the axle. Pulling on the piece, they rip off the thread.
  • Screw the tool into the connecting rod. It is screwed to the end, otherwise it may break off and break the thread.
  • Tighten the inner screw using a wrench. It turns clockwise. we will notice how the connecting rod gradually moves from a dead center.
  • After such removal, the puller is twisted from the part.

You should not overdo it, otherwise there is a risk of breaking the thread or spoiling the key for removing the connecting rods on bicycles. this will significantly complicate the work. It is recommended to fill the connection with grease and try again.

Installing the connecting rod

By the last stage of the repair, all parts should be cleaned and generously coated with grease. This will make it easier and faster to put the crank back on the bike. In the future, it will be much easier to remove the part, and during the ride there will be no unnecessary squeaks and crunches.

The connecting rod is deeply seated on the shaft so that no backlash occurs during movement, otherwise the seat will loosen and be broken. Fixation is achieved by tightening the mounting bolt by 50-70 Nm with significant effort (taking into account the length of the connecting rods). It is recommended to inspect the integrity of the connection before installation. The process is carried out as follows:

  • Put the chain on the carriage (when installing the right element), then the connecting rod on the axle, tighten the tightening fastener.
  • When putting on a different connecting rod, it is important not to confuse its position.
  • Tighten the bolts tightly, otherwise it is fraught with breakages.
  • Put on the plugs from the dirt, the chain on the sprocket.

The connecting rod is an important part that carries a significant portion of the load. It is simple in its structure, therefore it can be dismantled without problems, it can be replaced in the event of a breakdown. When repairing, it is worth using a puller, study the instructions on how to remove the connecting rod from the bike, especially if there is no experience of the corresponding work.

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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 fastening 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.

How to remove cranks on a bicycle without a puller

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.

Manufacturing materials

During travel, the cranks are subject to the highest load. Therefore, solid steel is most often used as a material for their manufacture. Recently, products made from aluminum alloys have been in high demand. Most often, such solutions are used when completing sports bicycles, where reducing the total weight plays a decisive role.

Types of fasteners

To understand how to remove cranks from a bicycle without a puller, it is important to understand the types of mounts that are used to connect the part to the sprockets. Modern products can be installed using nuts, splines or fasteners made in the form of specific squares. Rotary joining is also available today.

Radical approach

If the parts are not stuck, the previous methods will help you remove bicycle crank arms without a puller. As you can see, the options are quite elegant and, with the right approach, will not harm either the bike or you. But it also happens that spare parts stick very strongly. Especially often at the contact points aluminum / steel or steel / steel.

In this case, a grinder or a drill will help. It is difficult to name a specific method of cutting, since the design of frames and systems can be very diverse. On some bicycles, you can simply cut off the crank shaft, on some you can try to drill the largest hole in the place of the thread, which, under the influence of vibrations, will help to destroy the connection or break the metal.

A bonded joint can be destroyed by temperature extremes. Heat the connecting rod head with a torch, for example, and then cool it down as hard as possible. Due to the physical properties of metal, there is a chance to remove the bicycle cranks without a puller as soon as the structure cools down.

how to pull the crank off bicycle without a puller

You can experiment by combining the above methods, or try your own unique.

If there’s nowhere to rush

Let’s say you bought new cranks and want to replace them, but the old ones can still last a few days. In this case, you can try the following method:

  • Unscrew the carriage fixing bolts.
  • Spray any penetrating grease into the contact area.
  • Go for a bike ride without screwing in the bolts.

There is a chance that frequent vibrations will cause the connecting rods to come off the shaft by themselves. Be careful, if they fly off at the time of the jump, it will be extremely unpleasant.

The Hollowtech II standard is the least problematic. In order to remove the connecting rods, you only need a 5 mm hexagon, a special wrench for this standard, which is easily replaced with a 10-11 mm hexagon, and a little effort if the system is stuck to the bearings. Even a child can cope with this.

What are the pullers

A bicycle crank wrench is a special tool (usually a press) that makes it much easier to remove the system, unlike a hammer.

Each of the above standard has its own puller. In the case of a square shaft and Octalink, this is a kind of press that is screwed into the connecting rod head itself, rests on a special platform against the carriage shaft and, by screwing in a nut, breaks the connecting rod. There are cases of breakage of the thread of the connecting rods themselves, if the system was pressed very hard.

The left end cap with Hollowtech II requires a special sprocket wrench. The clamping bolt is tightened with a force of only 1-2 N / m, so a key of this standard is usually plastic, inconvenient, and the cover can be easily unscrewed by hand.

A special tool is good, and every bike lover should get it. But still, let’s move on to the main question. how to remove the bicycle cranks without a puller?

Repair without tools is possible

Ordinary users are unlikely to have a connecting rod puller somewhere, especially for the Octalink, although it costs a penny. But sooner or later the moment will come when either the system or the carriage will become unusable and require urgent replacement. If you have the necessary tools, the replacement of these parts is carried out in 10-15 minutes.

The easiest way to remove cranks from a bike without a puller, as mentioned above, is with a hammer. It is relevant for both Octalink and a regular square. The subsequent actions look like this:

  • Remove the plugs from the connecting rods, if present.
  • Using a 13 mm wrench, remove the carriage bolts. Many carriages today have 6mm hex bolts.
  • If you don’t want to visually damage your bike cranks, wrap them in several layers of thick fabric, cardboard, tape, or take a pine block a few centimeters thick. Ideally, a mallet is suitable for such an unusual task.
  • Flip the bike over against the handlebars and saddle.
  • Begin tapping the connecting rod with moderate force from the inside, as close to the axle as possible. You can hit the connecting rod from time to time from the outside in order to somehow stir it up.
  • If the structure is pressed very tightly, you can try to hit pointwise with a chisel or a barb attached to the connecting rod head.

Please note: Using this method, you can damage the frame, the bottom bracket assembly, or the connecting rod itself. In addition, any impact on the stars is likely to deform them and render them unusable.

It is worth saying that removing stuck connecting rods can be problematic, even with a puller. Most likely, in this way you will not be able to remove the stuck bicycle crank, no matter how hard you try. But do not despair, for such cases they came up with other ways.

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How to remove connecting rods from a bike without a puller? Helpful hints

Bicycle transmission tends to wear out even with proper and timely care. Most people, of course, do not have special bicycle tools, and if you suddenly felt an urgent need to replace its components, then, most likely, you wondered how to remove the connecting rods from a bicycle without a puller and is it possible to do it yourself? To deal with this, it is worth learning more about the connecting rods themselves and the types of carriages.

A little about standards

On bicycles of different classes, it is logical to install bicycle cranks and carriages of different standards. At the moment, the following types of carriage assembly are popular:

  • Standard square mount. the old look for budget bikes.
  • Octalink, invented by Shimano. It has several subspecies, including standards from other manufacturers that are very similar in design. In fact, it is a kind of “square” carriages, but has a redesigned shaft and modified splines.
  • Hallowtech II is considered the best option in terms of stiffness / weight ratio, but it costs more than others. Also invented by Shimano.

On older bicycles, wedges were a common type of fastening. There were quite a few problems with such a system, which is why it remained in the last century. Now they are practically not produced, and even the most budgetary bicycles are equipped with carriages with a square shaft.

Preventing corrosion

Those who have dealt with stuck spare parts probably would not want to repeat this again. To prevent such unpleasant situations, you just need to process the attachment point before installation.

When replacing connecting rods, apply some grease to the bottom bracket shaft where it contacts other parts, regardless of type. Do not add too much lubricant, since at the time of pressing, its excess will be squeezed out of the connection and will remain to collect dirt outside it. Before installation, it is also worth lubricating the threads and even some latches.

How to remove connecting rods from a bike without a puller

Active cycling requires certain skills to quickly repair vehicles. Before setting off on a long trip, it is best to foresee possible breakdowns and malfunctions of equipment, take with you the necessary tools and a set of spare parts, for example, cameras. It often happens that the right thing was not at hand, but even then there is a way out of the situation. For example, if you need to adjust the carriage of a bicycle, then you need to remove and disassemble the connecting rod, but there is no tool. This problem has a solution and it is worth familiarizing yourself with the design and purpose of this part in more detail.

The device and purpose of the part

A bicycle connecting rod is a metal lever that has a large and a small head on the rod. This element is of several types:

  • One-component. They represent a single structure. left, right connecting rod, axle. The advantages of this type are great strength, easy maintenance, but they have a significant weight;
  • Two-component. Here, the drive sprocket, the right connecting rod and the axle are connected, and the left one is connected separately with a nut;
  • Three-part. This most famous and popular system is the axle, the left connecting rod and the right one together with the sprocket.

The load on the connecting rod is very high, and therefore they are most often made from solid steel, but there are also options from aluminum alloys, for example, in sports type bicycles or imported models. Inexpensive two-wheeled vehicles have a front sprocket block, combined with a connecting rod and non-separable. In this case, when replacing the sprockets, both connecting rods must be replaced. New ones are selected depending on the type of existing carriage.

How to disassemble a connecting rod without a puller?

The simplest method is to use a special puller. If there is no such tool, then in order to disassemble, remove and repair it, you need to make some effort and skill. During the ride, dirt and dust gets into the attachment area of ​​this element, the element literally sticks to its attachment due to heavy loads. In this case, you need to know how to remove the cranks from the bike without using a puller. You can fix the problem and make repairs on your own, and this will help you get to the place of equipment repair.

In unsuitable conditions, you can try the following methods in order to remove the part. If you unscrew the nut or bolt that secures the connecting rod and drive a certain distance, then the element can be disassembled and removed much easier, and in the future, replace or adjust what is required. The method is to pour boiling water over it. Consequently, all dirt and dust will get wet and making repairs to the bike, it will be easier to remove the element. This option is also suitable when it is important to remove the pedals. It is important to know and not to be confused in which direction which pedal is unscrewed. The left pedal has a left-hand thread, and the right one, respectively.

If the bottom bracket of the bike requires adjustment, the cranks must also be removed from the bike. Other recommendations will also help in case of unforeseen breakdowns. If the cable of the gearshift or brake is damaged, you need to replace it with a new one, and if there is none, then tie the torn ends. Bicycle spoke failure is also a common problem. Then a wire with a diameter of about 2 mm will help. The end of the spoke next to the rim is crocheted, and then a piece of wire is inserted, which must be passed through the socket of the hub. This replacement is far from perfect, but it will allow you to reach the goal and the place where you can repair the equipment well. Regular viewing and maintenance of two-wheeled vehicles will avoid many of these problems and make the trip enjoyable.