How to disassemble a chainring on a bicycle

Cassette manipulation

The rear wheel drivetrain is more complex and consists of many components. When the ratchet becomes unusable, it remains only to remove it with a puller and an adjustable wrench, and replace it with a new one, since it is monolithic and does not consist of individual stars. But the cassette is just to be repaired. To do this, take the following steps:

  • The wheel is dismantled from the bicycle using an open-end wrench. If the mount is eccentric, then it is much easier to remove the wheel by opening the retaining lever;
  • With an adjustable wrench, unscrew the axle nuts (using another nut for convenience) and remove the axle;
  • Install the puller with slots in the grooves of the retaining ring;
  • The whip is placed on a star (preferably a large one) and held;
  • The puller is turned counterclockwise with an adjustable wrench, and the whip is directed in the opposite direction so that the cassette does not scroll. Sometimes you have to make a lot of effort;
  • The retaining ring is unscrewed and the entire cassette is removed. They select the worn-out stars in the mechanism and remove them, replace them with new ones. It is important not to confuse the sequence of disassembling and assembling the cassette parts and the bicycle mountings;
  • After it was possible to remove the parts, you should clean the cassette from dirt, replace the worn out elements and lubricate the mechanism.
  • it is advisable to apply lubricant to the thread of the retaining ring at the beginning of the assembly. then at the next MOT of the bike the mechanisms will be removed more easily;
  • the stars should be assembled in the same sequence, alternating with spacer rings;
  • put on, twist and tighten the locking ring clockwise;
  • fasten the axle with nuts from the side of the cassette, tighten the chain and put the rear wheel in place.

Check the idling operation of the transmission.

You can remove and replace worn-out sprockets on your bike yourself, it’s not difficult at all. Professionals recommend conducting a technical analysis of the bike’s transmission at least once every 2 years, for early identification of problems. Thanks to this, the cyclist will be spared from bitter surprises on the road, on trips, and the mechanism itself and the bike will serve for many years.

What difficulties can there be

If the bike has not undergone maintenance before and the transmission will have to be removed for the first time, then some difficulties are possible:

  • The mechanism twists heavily, it is not possible to disassemble it, and to remove it even with enormous efforts. We will correct this moment. You can stock up in advance with a special aerosol. spray WD-40. It is designed to facilitate repair work with a bicycle and car. It is necessary to treat the desired mechanism with an aerosol and wait for the specified time, after which it will be much easier to unscrew and remove the parts;
  • Inattentive disassembly of the cassette. parts and fasteners are messed up. In order to avoid this, it is advisable to replace parts carefully, remembering the entire sequence of subsequent steps, possibly with a note, or use the instructions attached to the new bike part.

How to remove a star from a bike

In order for the bike to be in good working order for a long time, it is necessary to carry out an inspection from time to time. First of all, the chain comes into a worn out state, and behind it the stars on the wheels are the main components in the gearshift system. These parts can be removed and replaced by yourself by purchasing the corresponding parts in advance. How to remove a sprocket from a bicycle and replace it with a new one, we will consider below.

disassemble, chainring, bicycle

What tool do you need

Shabby sprockets are subject to mandatory replacement, as they take the bike out of service. In order to remove them correctly, it is necessary to supply tools, with the help of which the replacement can be carried out easily without damaging the parts. The stars are divided into two categories in terms of the level of action in the transmission:

  • the system of leading stars (from one to three). located at the crankset with pedals, on the right side;
  • driven. located on the rear wheel, they are in the form of a ratchet or cassette.
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Depending on which category of elements on the bike fail, the necessary tools are selected to remove them. Bike Lead System Tools Required:

  • puller for connecting rods;
  • technical grease and napkins;
  • keys. cap and open;
  • hexagons;
  • purchased replacement parts.

With frequent off-road cycling, the smallest one breaks in the leading stars. And at average speeds, on roads with not the best asphalt pavement, the average one fails. If the bike is used for racing at speeds, then the breakdown will be big.

disassemble, chainring, bicycle

The driven elements fail more often, this is facilitated by the switching of the most popular gears while driving. The tools you will need to remove the sprockets on the rear wheel of your bike are:

  • cassette remover;
  • adjustable wrenches;
  • open-end wrenches for removing the wheel for repair work;
  • whip. a retainer with a chain;

A ratchet drivetrain is commonly found on budget 5-8 speed bikes. And the cassette is a modern and modernized solution that includes, at the moment, up to 12 constituent elements.

How to do without a special puller

In order for the equipment to serve as long as possible, it is recommended to remove and replace the worn out parts of the bicycle with a special tool. But there is an option of how to remove the elements of the driven part of the ratchet without a special puller:

  • Prepare tools that are in any garage or pantry: center punch, hammer and gas wrench;
  • The center punch is inserted into the two existing recesses in the ratchet and gently hit with a hammer, in a clockwise direction. The impact force must be calculated accurately so as not to damage the bearings below;
  • The ratchet is removed with a gas key, replaced with a new one. The new drivetrain is secured back to the bike.

Replacing a cassette on a bicycle without using a puller is not recommended, since it will not be possible to carry out this manipulation without damaging the transmission. The bike will have to be returned to the workshop for repair.

System manipulation

Replace the failed stars on the leading system as follows:

  • The axle bolt is removed from the connecting rod on the right side, using a hexagon, and the pedal is unscrewed with an open-end wrench;
  • Install the puller in the connecting rod, clearly along the thread. Then the spanner wrench is placed on the puller and screwed in until it stops. the connecting rod must come out of the carriage shaft;
  • The next step is to remove the drive system from the bike, memorizing the sequence of actions. The large star, as a rule, remains on the connecting rod, and the middle with the small one is fixed to each other by a spider.

Then new elements are placed instead of worn out ones:

  • install new sprockets (if it is small or medium) on the spider mount;
  • replacing the large one is carried out together with the right connecting rod, followed by screwing the remaining stars to it. Depending on the mounting standard, the large chainring can also be removable and does not require replacement of the connecting rods;
  • the assembled structure is installed in a carriage pre-treated with grease and a chain is put on;
  • the connecting rod is scrolled, using a puller, in the opposite direction;
  • all bolts and nuts, plugs that had to be removed earlier, are screwed in strictly in the same sequence;
  • put the right pedal in place and check the movement of the bike elements.

System manipulation

Replace the failed stars on the leading system as follows:

  • The axle bolt is removed from the connecting rod on the right side, using a hexagon, and the pedal is unscrewed with an open-end wrench;
  • Install the puller in the connecting rod, clearly along the thread. Then the spanner wrench is placed on the puller and screwed in until it stops. the connecting rod must come out of the carriage shaft;
  • The next step is to remove the drive system from the bike, memorizing the sequence of actions. The large star, as a rule, remains on the connecting rod, and the middle and small ones are fixed to each other by a spider.

Then new elements are placed instead of worn out ones:

  • install new sprockets (if it is small or medium) on the spider mount;
  • replacing the large one is carried out together with the right connecting rod, followed by screwing the remaining stars to it. Depending on the mounting standard, the large chainring can also be removable and does not require replacement of the connecting rods;
  • the assembled structure is installed in a carriage pre-treated with grease and a chain is put on;
  • the connecting rod is scrolled, using a puller, in the opposite direction;
  • all bolts and nuts, plugs that had to be removed earlier, are screwed in strictly in the same sequence;
  • put the right pedal in place and check the movement of the bike elements.
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What tool do you need

Shabby sprockets are subject to mandatory replacement, as they take the bike out of service. In order to remove them correctly, it is necessary to supply tools, with the help of which the replacement can be carried out easily without damaging the parts. The stars are divided into two categories in terms of the level of action in the transmission:

  • the system of leading stars (from one to three). located at the crankset with pedals, on the right side;
  • driven. located on the rear wheel, they are in the form of a ratchet or cassette.

Depending on which category of elements on the bike fail, the necessary tools are selected to remove them. Bike Lead System Tools Required:

How To Replace Chainrings Shimano 4 Bolt Road Crankset

  • puller for connecting rods;
  • technical grease and napkins;
  • keys. cap and open;
  • hexagons;
  • purchased replacement parts.

With frequent off-road cycling, the smallest one breaks in the leading stars. And at average speeds, on roads with not the best asphalt pavement, the average one fails. If the bike is used for racing at speeds, then the breakdown will be big.

disassemble, chainring, bicycle

The driven elements fail more often, this is facilitated by the switching of the most popular gears while driving. The tools you will need to remove the sprockets on the rear wheel of your bike are:

  • cassette remover;
  • adjustable wrenches;
  • open-end wrenches for removing the wheel for repair work;
  • whip. a retainer with a chain;

A ratchet drivetrain is commonly found on budget 5-8 speed bikes. And the cassette is a modern and modernized solution that includes, at the moment, up to 12 constituent elements.

Cassette manipulation

The rear wheel drivetrain is more complex and consists of many components. When the ratchet becomes unusable, it remains only to remove it with a puller and an adjustable wrench, and replace it with a new one, since it is monolithic and does not consist of individual stars. But the cassette is just to be repaired. To do this, take the following steps:

  • The wheel is dismantled from the bicycle using an open-end wrench. If the mount is eccentric, then it is much easier to remove the wheel by opening the retaining lever;
  • With an adjustable wrench, unscrew the axle nuts (using another nut for convenience) and remove the axle;
  • Install the puller with slots in the grooves of the retaining ring;
  • The whip is placed on a star (preferably a large one) and held;
  • The puller is turned counterclockwise with an adjustable wrench, and the whip is directed in the opposite direction so that the cassette does not scroll. Sometimes you have to make a lot of effort;
  • The retaining ring is unscrewed and the entire cassette is removed. They select the worn-out stars in the mechanism and remove them, replace them with new ones. It is important not to confuse the sequence of disassembling and assembling the cassette parts and the bicycle mountings;
  • After it was possible to remove the parts, you should clean the cassette from dirt, replace the worn out elements and lubricate the mechanism.
  • it is advisable to apply lubricant to the thread of the retaining ring at the beginning of the assembly. then at the next MOT of the bike the mechanisms will be removed more easily;
  • the stars should be assembled in the same sequence, alternating with spacer rings;
  • put on, twist and tighten the locking ring clockwise;
  • fasten the axle with nuts from the side of the cassette, tighten the chain and put the rear wheel in place.

Check the idling operation of the transmission.

Bike Maintenance: How to Replace a Chainring

Sequencing

Consistency in actions is an important point.

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You can remove and replace worn-out sprockets on your bike yourself, it’s not difficult at all. Professionals recommend conducting a technical analysis of the bike’s transmission at least once every 2 years, for early identification of problems. Thanks to this, the cyclist will be spared from bitter surprises on the road, on trips, and the mechanism itself and the bike will serve for many years.

How to remove a star from a bike

In order for the bike to be in good working order for a long time, it is necessary to carry out an inspection from time to time. First of all, the chain comes into a worn out state, and behind it the stars on the wheels are the main components in the gear shifting system. These parts can be removed and replaced by yourself by purchasing the corresponding parts in advance. How to remove a sprocket from a bicycle and replace it with a new one, we will consider below.

READ  How to Assemble the Rear Bottom Bracket on a Bicycle

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 design. 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.

This part of the bicycle can also have various types of fastening, for example, a square, a slot. The first is used in professional sports equipment models, and there is also the latest development. rotor system.

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.

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 make repairs, you need to make some effort and skill. During the ride, dirt and dust gets into the attachment area of ‚Äč‚Äčthis 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. Failure of the bicycle spokes. this 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.