Tag: crankset-removal

3 Steps: How To Remove Crankset

3 Steps: How To Remove Crankset
How To Remove Crankset

Removing a crankset is a relatively simple task that can be completed with a few basic tools. However, it is important to take your time and follow the steps carefully to avoid damaging your bike. Even if you’re not mechanically inclined, with a little patience and care, you can remove your crankset at home. Cranks, chainrings, and bottom brackets make up your drivetrain. The crankset is the part that allows you to actually move your bike so it’s important to keep it in good working order. Cleaning and replacing your crankset will help extend the life of your bicycle and keep you riding smoothly.

First, you will need to gather the following tools: a 5mm Allen key, a 14mm socket wrench, a chain whip, and a crank puller. Once you have your tools, you can begin the process of removing the crankset. It’s a good idea to lay down a towel or tarp beneath your bike before you begin to catch any falling parts. Start by shifting your bike into the smallest chainring. Then, use the 5mm Allen key to loosen the pinch bolts on the crank arms. Once the pinch bolts are loose, you can use the 14mm socket wrench to remove the crank arm bolts. Finally, use the chain whip to remove the chainring bolts. Once the chainring bolts are removed, you can pull the crankset off of the bottom bracket spindle.

If you are having difficulty removing the crankset, you can try using a penetrating oil to loosen the bolts. However, be sure to wipe away any excess oil before you reassemble the crankset. Once the crankset is removed, you can clean and inspect the parts. If any of the parts are damaged, you will need to replace them before you reassemble the crankset. To reassemble the crankset, simply follow the steps in reverse order. Be sure to tighten all of the bolts to the proper torque specifications. Once the crankset is reassembled, you can test it by riding your bike. If the crankset is working properly, you should be able to shift gears smoothly and pedal without any problems.

Gathering Essential Tools and Equipment

Essential Tools

* Allen key set: Various sizes are typically required for different crankset designs.
* Chain whip: Prevents the chain and cassette from rotating during crankset removal.
* Crank puller: A specialized tool designed to extract the crankset from the bottom bracket.
* Pedal wrench: Used to remove the pedals before crankset removal.

Additional Equipment

* Work stand or bike stand: Provides a stable platform for working on the bike.
* Rubber mallet (optional): Can be used to gently tap the crank puller arms and aid in crankset extraction.
* Degreaser or cleaning solution: Required to remove any dirt or grease prior to tool use.
* Shop rags or paper towels: For cleaning and wiping.

Recommended Sizes

The recommended sizes for Allen keys and crank pullers depend on the specific crankset design. However, common sizes include:

Tool Sizes
Allen keys 4mm, 5mm, 6mm, 8mm
Crank pullers Adjustable or specific to crankset model

It is important to have the correct tools for your specific crankset. Refer to the manufacturer’s instructions or consult with a bike mechanic if unsure.

Removing the Pedals

For the third step, you will need to remove the pedals. This is relatively simple, but there are a few things to keep in mind.

  1. First, you will need to identify the type of pedals you have. There are two main types of pedals: platform pedals and clipless pedals. Platform pedals are the most common type of pedal and are simply a flat surface that you rest your foot on. Clipless pedals, on the other hand, require you to wear special shoes that clip into the pedals.
  2. Once you have identified the type of pedals you have, you can begin removing them. To remove platform pedals, simply use a 15mm wrench to loosen the bolts that hold the pedals in place. To remove clipless pedals, you will need to use a special tool called a pedal wrench.
  3. Finally, once the pedals are loose, you can simply pull them off the crank arms. Be careful not to drop the pedals, as they can be heavy.

    Detaching the Chain

    To detach the chain, use a chainbreaker tool. If you don’t have a chainbreaker tool, you can use a pair of pliers but be careful not to damage the chain or the pliers. To detach the chain using a chainbreaker tool, follow these steps:

    1. Position the chainbreaker tool over the chain pin that you want to remove.
    2. Tighten the chainbreaker tool until the pin breaks.
    3. Remove the broken pin and the chain will now be detached.

    If you are using a pair of pliers to detach the chain, follow these steps:

    1. Position the pliers over the chain pin that you want to remove.
    2. Squeeze the pliers until the pin breaks.
    3. Remove the broken pin and the chain will now be detached.
    4.

    Removing the Crankset with a Crank Puller

    To remove the crankset with a crank puller, follow these steps:

      Step Description 1 Attach the crank puller to the crank arm. 2 Tighten the crank puller until the crank arm comes loose. 3 Remove the crank arm and the crankset will now be detached.

    Removing the Chainring Bolts

    The chainring bolts are what hold the chainrings in place on the crankset. Before you can remove the crankset, you need to remove these bolts. To do this, you will need a 5mm Allen key or Torx key. Insert the key into the bolt and turn it counterclockwise to loosen it. Once the bolt is loose, you can remove it by hand. Repeat this process for all of the chainring bolts.

    Bolt Size Tool Required
    5mm Allen key or Torx key

    Tips

    1. If the chainring bolts are particularly tight, you may need to use a breaker bar or impact wrench to loosen them.
    2. Be careful not to strip the bolts. If you do, you will need to replace them.
    3. Once the chainring bolts are removed, you can now remove the chainrings and crankset.

    Using a Crank Puller

    A crank puller is a specialized tool designed to remove the crankset from the bottom bracket. It consists of a threaded bolt, a puller arm, and a cup that fits over the crank arm. To use a crank puller, follow these steps:

    1. Remove the pedals from the crank arms.
    2. Unscrew the chainring bolts and remove the chainrings.
    3. Thread the bolt of the crank puller into the crank arm until it is snug.
    4. Attach the puller arm to the bolt and tighten it.
    5. Place the cup of the crank puller over the crank arm.
    6. Tighten the puller arm until the crankset pops off the bottom bracket.

      Note: Some cranksets require a specific type of crank puller. Consult your bike’s manual or the manufacturer’s website to determine the correct tool for your model.

      Safety Tips:

      • Always wear safety glasses when working on your bike.
      • Use a torque wrench to tighten the crank puller to prevent stripping the threads.
      • Be careful not to damage the crank arms or the bottom bracket when using the crank puller.

      Separating the Crankarms from the Bottom Bracket

      7. Removing the Crankarms

      Once the crank bolts have been loosened, you can proceed with removing the crankarms. Here’s how:

      1. Position a crank puller on the crankarm. The puller should be securely attached to the arm, with the threaded shaft aligned perpendicular to the crankarm’s axle.
      2. Tighten the puller’s threaded shaft by hand until it makes contact with the bottom bracket spindle. Do not overtighten at this stage.
      3. Using a wrench, gently turn the puller’s shaft clockwise, applying slow and steady pressure. As you turn, observe the crankarm for any movement.
      4. If the crankarm does not start moving within a few turns, slightly loosen the puller and re-tighten it, ensuring it is correctly aligned. Repeat step 3.
      5. Once the crankarm begins to move, continue turning the shaft clockwise until the arm is completely removed from the bottom bracket.
      6. Repeat steps 1-5 for the opposite crankarm.

      Note: It’s crucial to apply pressure evenly and carefully during this process to avoid damaging the crankarm or bottom bracket.

      Tip: If you encounter significant resistance while removing the crankarms, use a penetrating oil to lubricate the threads and ease the process.

      Can’t Remove Crankarms?

      In some cases, crankarms may be seized or stuck due to corrosion or overtightening. If you are unable to remove them using the crank puller method:

      • Apply penetrating oil to the crankarm threads and let it sit for several hours.
      • Try tapping the crankarm with a rubber mallet or using a pry bar to break the bond.
      • If all else fails, seek professional assistance from a bicycle mechanic.

      Inspecting the Bottom Bracket and Crankarms

      Inspecting the Bottom Bracket

      Before attempting to remove the crankset, it’s crucial to inspect the bottom bracket and crankarms for any damage or abnormalities. This will help you identify potential issues that may require further attention before proceeding with the removal process.

      Inspect the bottom bracket for any signs of wear, corrosion, or damage to the bearings, seals, or axle. If there are any visible issues, it’s recommended to replace the bottom bracket before removing the crankset.

      Inspecting the Crankarms

      Examine the crankarms for any cracks, dents, or other damage. If there are any significant defects, removing the crankset is not advisable until the crankarms are repaired or replaced.

      Check the crankarm bolts for tightness and ensure they are not stripped or damaged. If the bolts are loose or damaged, it’s essential to tighten them or replace them as needed.

      Re-Assembling the Crankset

      Step 1: Align the Crankset and Axle

      Align the crankset with the axle so that the splines on the axle engage with those on the crankset. Make sure the crank arms are facing the correct direction, typically with the chainrings facing outward.

      Step 2: Tighten the Cranks

      Use the crank bolts or cap screws to tighten the crankset onto the axle. Apply an appropriate amount of torque, as specified by the manufacturer’s instructions. If overtightened, the cranks may become damaged.

      Step 3: Install the Chainrings

      If the chainrings are not already installed, mount them onto the crankset using the provided bolts. Ensure they are aligned correctly and tighten them securely.

      Step 4: Check Alignment and Tension

      Check that the crankset is aligned properly and there is no play or excessive movement. Adjust the chain tension by moving the rear derailleur if necessary.

      Step 5: Inspect and Lubricate

      Inspect the crankset for any damage or wear. Lubricate the bearings and any moving parts to ensure smooth operation.

      Step 6: Install the Pedal Arms

      Screw the pedal arms into the crank arms, making sure to tighten them securely. Use a pedal wrench or hex key to apply the correct torque, typically around 35-45 Nm.

      Step 7: Install Chain Guard or Covers

      If there is a chain guard or cover, install it onto the crankset to protect the chain and prevent dirt from accumulating.

      Step 8: Saddle and Test Ride

      Reinstall the saddle and take the bike for a test ride to ensure the crankset is functioning properly. Listen for any unusual noises or vibrations and adjust as necessary.

      Step 9: Final Inspection and Adjustments

      After the test ride, thoroughly inspect the crankset and all its components. Check the chainring alignment, crankset tightness, and pedal bearings. Make any final adjustments or tightenings if required.

      Tightening the Crankarms and Chainring Bolts

      Once you have removed the crankset, you will need to tighten the crankarms and chainring bolts. This is a critical step, as it ensures that the crankset is properly secured and able to function correctly. Here are the steps on how to tighten the crankarms and chainring bolts:

      1. Apply a small amount of thread locker to the threads of the crankarms and chainring bolts. This will help to keep the bolts from loosening over time.

      2. Insert the crankarms into the bottom bracket and tighten the crankarms using a socket wrench. The torque specifications for tightening the crankarms will vary depending on the type of crankset you have. Refer to the manufacturer’s instructions for the specific torque specifications.

      3. Once the crankarms are tightened, install the chainrings and tighten the chainring bolts using a socket wrench. Again, the torque specifications for tightening the chainring bolts will vary depending on the type of crankset you have. Refer to the manufacturer’s instructions for the specific torque specifications.

      Table of Recommended Torque Specifications for Common Crankset Types

      Crankset Type Crankarms Torque (Nm) Chainring Bolts Torque (Nm)
      Shimano Hollowtech II 35-50 10-12
      SRAM GXP 40-55 10-12
      Race Face Cinch 44-60 10-12

      How to Remove Crankset

      A crankset is a set of two cranks that connect the pedals to the bike’s bottom bracket. Removing a crankset is necessary for a variety of reasons, such as replacing the cranks, bottom bracket, or chainrings. This guide will show you how to remove a crankset using the proper tools and techniques.

      1. Gather your tools. You will need a crank puller, a chain whip, a 5mm Allen wrench, and a 14mm socket wrench.
      2. Remove the pedals. Use a 15mm socket wrench to loosen the pedals and remove them.
      3. Remove the chainring bolts. Use a 5mm Allen wrench to loosen the chainring bolts and remove the chainrings.
      4. Attach the crank puller. Thread the crank puller onto the crank arm and tighten it until it is snug.
      5. Turn the crank puller. Use a 14mm socket wrench to turn the crank puller bolt clockwise. This will pull the crankset off of the bottom bracket.
      6. Remove the crankset. Once the crankset is loose, you can remove it by hand.

      People Also Ask

      How do I remove a crankset without a crank puller?

      If you do not have a crank puller, you can use a hammer and a punch to remove the crankset. Place the punch on the back of the crank arm and hit it with the hammer. This will drive the crankset off of the bottom bracket.

      How do I know if I need to remove my crankset?

      There are a few signs that you may need to remove your crankset. These include:

      • The cranks are loose or wobbly.
      • The chainrings are worn or damaged.
      • The bottom bracket is making noise.

11 Easy Steps: How to Remove Cranks From a Bike

3 Steps: How To Remove Crankset
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Removing cranks from a bike can be a daunting task, but it’s actually quite simple with the right tools and a little know-how. Whether you’re replacing worn-out cranks or simply cleaning them, this guide will walk you through the process step-by-step. We’ll cover everything from choosing the right tools to tightening the new cranks securely. So grab your tools and let’s get started!

Before you begin, it’s important to gather the necessary tools. You’ll need a crank puller, which is a specialized tool designed to remove cranks. You can usually rent a crank puller from your local bike shop or purchase one online. You’ll also need a set of Allen wrenches and a torque wrench. Once you have your tools assembled, you can begin the process of removing your cranks.

The first step is to remove the pedals from your bike. To do this, simply use an Allen wrench to loosen the bolts that hold the pedals in place. Once the pedals are removed, you can use the crank puller to remove the cranks. Place the crank puller over the crank arm and tighten the bolts until the crank arm begins to loosen. Once the crank arm is loose, you can remove it by hand. Repeat this process for the other crank arm and your cranks will be removed.

Disassembling the Crank Arms

Step 1: Identifying the Crank Type

Before proceeding with disassembly, determine the type of crankset installed on the bicycle. Cranks are commonly classified into two main types: cottered cranks and splined cranks. Cottered cranks utilize a wedge-shaped cotter pin to secure the crank arm to the spindle, while splined cranks employ a series of splines and notches to engage the crank arm with the spindle.

To identify the crank type, inspect the area where the crank arm meets the spindle. Cottered cranks will have a visible cotter pin hole, whereas splined cranks will feature a series of splines or notches on both the spindle and crank arm. Accurate identification is crucial as disassembly procedures differ depending on the crank type.

Removing the Pedal Spindle

Locate and Remove the Pedal Bolt

Begin by identifying the pedal bolt, typically located at the end of the pedal spindle. Using an appropriate Allen key or wrench, carefully loosen and remove the pedal bolt. Ensure to support the pedal to prevent it from falling to the ground.

Detach the Pedal from the Crank Arm

Once the pedal bolt is removed, gently pull the pedal away from the crank arm. If the pedal is stuck, use a rubber mallet or a piece of wood placed against the pedal and tap it lightly to release it. Avoid hitting the pedal directly, as this could damage the bearings or threads.

Inspect and Clean the Spindle and Threads

With the pedal removed, thoroughly inspect the pedal spindle and threads on the crank arm for any damage or debris. Use a clean cloth or brush to remove any dirt or grease that may have accumulated. This ensures proper engagement and smooth operation of the new pedals.

Table: Pedal Spindle Removal Troubleshooting

Issue Possible Cause Solution
Stuck pedal Rust, corrosion, or debris Use a penetrating oil and let it sit before attempting to loosen the pedal bolt
Stripped pedal threads Excessive force or using the wrong tool Replace the pedal with a new one that fits the crank arm threads
Broken pedal bolt Applying too much force or a seized bolt Use a bolt extractor to remove the broken bolt

Identifying and Removing the Crankbolts

Locate the Crankbolts

The crankbolts are typically located at the center of the crank arm, where it connects to the spindle. They may be hidden under a plastic or rubber cap.

Remove the Cap

If there is a cap covering the crankbolts, use a flat-head screwdriver or a small pry tool to gently lift it off. Be careful not to damage the cap or the surrounding area.

Identify the Type of Crankbolts

There are two main types of crankbolts:

Crankbolt Type Description
Allen Bolt A hexagonal-shaped bolt that requires an Allen wrench to remove.
External Bolt A round-headed bolt that requires a socket wrench to remove.

Removing the Crankbolts

  • Allen Bolts: Insert the correct size Allen wrench into the bolt and turn it counterclockwise to loosen it.
  • External Bolts: Use a socket wrench with the appropriate socket size and turn the bolt counterclockwise to loosen it.

Using a Chain Whip to Hold the Cranks

A chain whip is a specialized tool designed to hold the cranks securely while you remove the crank bolts. Here’s a step-by-step guide on how to use a chain whip:

Step 1: Position the Chain Whip

Place the chain whip around the largest chainring, with the hook facing towards the opposite side of the crankset. Rotate the chain whip to ensure it engages securely with the chainring teeth.

Step 2: Lock the Chain Whip

Secure the chain whip in place by tightening the locking screw or lever provided on the tool. Pull the handle of the chain whip towards you to engage it with the freewheel mechanism or cassette.

Step 3: Align the Chain Whip

Align the chain whip perpendicular to the crank arm you’re removing. Rotate the chain whip as needed to make sure it provides secure leverage against the freewheel.

Step 4: Hold the Cranks

Position the crank arm you want to remove in a horizontal position parallel to the ground. Grip the handle of the chain whip tightly and apply firm pressure. The chain whip will hold the cranks in place, counteracting the force you apply to remove the crank bolts.

Applying a Crank Puller

To remove the cranks using a crank puller, follow these detailed steps:

  1. Identify the type of crank puller needed: Determine the spindle interface of your cranks (square taper, Octalink, ISIS, or Hollowtech II) to select the appropriate crank puller.
  2. Inspect the crank puller: Ensure that the threads on the crank puller spindle and the bolts are in good condition and free of any damage.
  3. Thread the puller onto the crank: Unscrew the bolts on the crank puller and then thread the spindle onto the crank arm. Ensure that the spindle is fully engaged.
  4. Tighten the bolts gradually: Tighten the bolts alternately, a few turns at a time, until the crank arm starts to loosen from the spindle.
  5. Remove the crank arm: Once the crank arm is loose, carefully wiggle it back and forth while pulling it towards you to remove it completely from the spindle.

Tightening the Crank Puller Bolts

To ensure a secure fit, tighten the crank puller bolts to the recommended torque using a torque wrench. Refer to the manufacturer’s specifications or a reputable bike repair manual for the precise torque value.

Here’s a step-by-step guide on tightening the crank puller bolts:

  1. Ensure that the crank puller is properly attached to the crank arm and that the bolts are aligned with the threaded holes on the puller.
  2. Use a torque wrench to gradually apply force to the bolts, alternating between them to ensure even tightening.
  3. Continue tightening until the recommended torque value is reached.
  4. Check the bolts again after riding a short distance to ensure they are still secure.

Note: Avoid overtightening the bolts, as this can damage the crank arm or the puller.

Refer to the table below for torque recommendations for different crankset types:

Crankset Type Torque (Nm)
Square Taper 40-55
Octalink 50-70
ISIS 60-80
Hollowtech II 150-170

Removing the Cranks

Removing the cranks is a relatively simple task that can be completed with a few basic tools. Here are the steps on how to do it:

  1. Gather your tools. You will need a crank puller, a 5mm Allen key, and a 14mm wrench.
  2. Remove the pedals. Use the 14mm wrench to loosen and remove the pedals.
  3. Loosen the crank bolts. Use the 5mm Allen key to loosen the crank bolts, but do not remove them completely.
  4. Attach the crank puller. Thread the crank puller onto the crank bolt.
  5. Tighten the crank puller. Use the 14mm wrench to tighten the crank puller until the cranks start to move.
  6. Remove the cranks. Once the cranks are loose, you can remove them by hand.

Removing the Crankset

If you are also removing the crankset, you will need to remove the chainring bolts. Use a 5mm Allen key to loosen and remove the chainring bolts. Once the chainring bolts are removed, you can lift the crankset off of the bike.

Inspecting the Cranks and Bearings

Before attempting to remove the cranks, it’s important to thoroughly inspect them and the bearings for any signs of damage or wear.

Visual Inspection

Examine the cranks for any visible cracks, bends, or other deformations. Check the bearings for any pitting, rust, or discoloration. If any of these signs are present, it’s best to replace the cranks and/or bearings before continuing.

Play Test

Grip the crank arms and try to move them laterally (side-to-side) and vertically (up-and-down). If you feel any excessive play or looseness, it indicates wear in the bearings or other components. In this case, further inspection and possible replacement are necessary.

Chainring Removal

Remove the chainrings from the cranks to gain better access to the bearings and spindle. Use a chainring bolt removal tool to carefully unscrew the bolts and remove the chainrings.

Bearing Inspection

With the chainrings removed, inspect the bearings more closely. Look for any signs of pitting, rust, or damage. If the bearings are smooth and free of any visible issues, they can likely be reused. However, if any irregularities are present, replacement is recommended.

Bearing Removal

If the bearings need to be replaced, use a bearing removal tool to carefully extract them from the crank arms. Note the orientation and position of the bearings for proper reinstallation later on.

Spindle Inspection

Inspect the spindle of the cranks for any signs of damage, rust, or bending. If the spindle is damaged, it should be replaced along with the cranks.

Clean and Prepare

Once all components have been inspected and removed, clean the cranks, bearings, and spindle thoroughly. This will help ensure proper functioning and prevent corrosion.

Reassembling the Cranks

Once the cranks have been removed, you can start reassembling them. Here are the steps:

  1. Apply a small amount of grease or anti-seize compound to the threads of the crank arms.

  2. Thread the crank arms onto the bottom bracket spindle. Tighten the crank arms using a 15mm socket wrench, or an 8mm allen key for square taper cranks.

  3. Install the pedals, applying a thin layer of grease to the threads. Tighten the pedals using a 15mm wrench.

  4. Tighten or loosen the chain tension by turning the rear wheel axle bolts. The chain should be tight enough to prevent skipping, but not so tight that it puts excessive stress on the drivetrain.

  5. If the cranks came loose during riding, use a torque wrench to ensure that the crank bolts are tightened to the manufacturer’s specifications.

  6. Check the chainring alignment. They should be parallel to the frame and in line with each other.

  7. Recheck all the bolts and nuts to ensure that they are tightened securely.

  8. Go for a test ride and check for any unusual noises or vibrations.

  9. Table of Tightening Torques:

    Component Tightening Torque
    Crank Bolts 48-54 Nm (35-40 ft-lbs)
    Pedals 35-40 Nm (26-30 ft-lbs)

Tools You’ll Need

Before you start, gather the following tools:

  • Chain whip or lockring tool
  • Socket wrench or Allen key
  • Crankshaft puller

Step-by-Step Instructions

1. Remove the chain

Use a chain whip or lockring tool to loosen and remove the chain from the chainring.

2. Remove the pedals

Use a socket wrench or Allen key to remove the pedals from the crank arms.

3. Remove the crank bolts

Use a socket wrench or Allen key to remove the crank bolts that secure the cranks to the bottom bracket.

4. Install the crankshaft puller

Thread the crankshaft puller onto the crankshaft and tighten it until it is snug.

5. Remove the cranks

Use the crankshaft puller to carefully pull the cranks off the crankshaft.

Troubleshooting Common Crankshaft Removal Issues

1. Cranks are stuck

If the cranks are stuck, try using a penetrating oil to loosen them. You can also try tapping the cranks with a hammer to break them free.

2. Crank bolts are stripped

If the crank bolts are stripped, you can try using a pair of pliers to grip the bolts and turn them. You can also try using a chisel to remove the bolts.

3. Crankshaft puller is not working

If the crankshaft puller is not working, make sure that it is tightened properly. You can also try using a different crankshaft puller.

4. Crankshaft is damaged

If the crankshaft is damaged, you will need to replace it. You can take the bike to a bike shop to have the crankshaft replaced.

How To Remove Cranks From Bike

To remove the cranks from a bike, you will need a few tools. These tools include a crank puller, a 15mm socket wrench, and an 8mm Allen wrench.

First, you will need to remove the pedal from the crank arm. To do this, use the 15mm socket wrench to loosen the bolt that is holding the pedal in place. Once the bolt is loose, you can remove the pedal by hand.

Next, you will need to remove the chain from the chainring. To do this, use the 8mm Allen wrench to loosen the bolts that are holding the chainring in place. Once the bolts are loose, you can remove the chainring by hand.

Now, you are ready to remove the cranks. To do this, use the crank puller to loosen the crank bolts. Once the bolts are loose, you can remove the cranks by hand.

People Also Ask About How To Remove Cranks From Bike

How do I know if my bike cranks need to be replaced?

There are a few signs that your bike cranks may need to be replaced. These signs include:

  • The cranks are bent or cracked.
  • The cranks are loose or wobbly.
  • The cranks are making noise when you pedal.

How much does it cost to replace bike cranks?

The cost to replace bike cranks will vary depending on the type of cranks you choose and the labor costs of your local bike shop. However, you can expect to pay between $50 and $200 for new cranks and labor.

Can I replace bike cranks myself?

Yes, it is possible to replace bike cranks yourself. However, it is important to note that this is a somewhat complex task that requires some specialized tools. If you are not comfortable working on your bike yourself, it is best to take it to a local bike shop for service.

10 Simple Steps: How to Remove Bicycle Pedal Crank

3 Steps: How To Remove Crankset
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Are you having trouble removing the bicycle pedal crank? Don’t worry, it’s a common problem for cyclists. In this article, we will provide you with a step-by-step guide on how to remove the bicycle pedal crank safely and effectively. Removing the crank is not a very difficult task, but it requires the right tools and techniques. By following the steps outlined in this article, you can easily remove the pedal crank and get your bike back on the road in no time.

The first step is to gather the necessary tools. You will need a 15mm wrench, a 17mm wrench, a pedal crank puller, and a rubber mallet. Once you have all of your tools, you can begin the removal process. First, remove the pedals from the crank arms. Next, use the 15mm wrench to remove the bolt that holds the crank arm to the bottom bracket. Be sure to support the crank arm with the other hand to prevent it from falling. Finally, use the pedal crank puller to remove the crank arm from the bottom bracket.

If you are having difficulty removing the crank arm, you can try using a rubber mallet to tap it loose. Be careful not to hit the crank arm too hard, as this could damage it. Once the crank arm is removed, you can repeat the process on the other side of the bike. With the crank arms removed, you can now easily access the bottom bracket for maintenance or replacement.

Locating the Pedal Crank

The pedal crank, also known as the crankarm, is a crucial component of a bicycle’s drivetrain. It connects the pedals to the bottom bracket, which in turn drives the rear wheel. Before removing the pedal crank, it’s essential to locate it accurately.

The pedal crank is typically a metal arm that extends from the bottom bracket. On each end of the crankarm, there are threaded cups called pedal spindles. These spindles are where the pedals are screwed in. In most cases, the pedal crank will be located on the right side of the bike, with a smaller crankarm on the left side.

To locate the pedal crank:
1. **Examine the Right Side of the Bike:** Look for a metal arm protruding from the bottom bracket on the right side of the bike. This arm will have two threaded cups at its ends for the pedals.
2. **Identify the Crankarm Length:** The length of the crankarm is typically measured from the center of the bottom bracket to the center of the pedal spindle. Common crankarm lengths range from 165 mm to 180 mm.
3. **Locate the Left Crankarm:** The left crankarm is usually shorter than the right crankarm. It is located on the left side of the bike and is connected to the right crankarm by a spindle.

Crankarm Side Length Threaded Cups
Right Longer For pedals
Left Shorter Connects to the right crankarm

Gathering Necessary Tools

Before embarking on the task of removing a bicycle pedal crank, it is crucial to assemble the essential tools. Below is a comprehensive list of what you will need:

Tool Purpose
15mm Spanners For loosening the crank bolts
Crank Puller To extract the crank from the bottom bracket
Allen Keys (6-8mm) For removing any retaining bolts on the crank
Chain Whip To prevent the cassette from spinning when loosening the crank bolts

The tools listed above are essential for ensuring a safe and efficient crank removal process. Failure to use the appropriate tools can lead to damage to the bike or the tools themselves. Therefore, it is advisable to double-check that you have all the necessary tools before proceeding with the crank removal.

Identifying Bolt Types

There are several common types of bolts used to secure bicycle pedal cranks, each requiring a specific tool or technique for removal. Here’s a detailed breakdown of the most common types:

1. Hex Bolt: This is a standard six-sided bolt that can be removed using a hex key or Allen wrench. The head of the bolt will have a raised hexagonal pattern.

2. Square Taper Bolt: A square taper bolt has a square-shaped head that fits into a matching square hole in the crank arm. This type of bolt is typically used for cottered cranks or older-style bottom brackets. Removal requires a special square taper bolt wrench or a flat-bladed screwdriver.

3. Hollowtech II Bolt: Hollowtech II bolts are used on Shimano’s Hollowtech II cranks. They feature a hollow center and a spline drive pattern on the inside. Removal requires a special Hollowtech II tool or a 12-point socket.

4. Octalink Bolt: Octalink bolts are used on Shimano’s older Octalink cranksets. They have a spline or star-shaped drive pattern on the head. Removal requires a special Octalink tool or a compatible socket or wrench.

5. ISIS Drive Bolt: ISIS Drive bolts are used on ISIS Drive cranks from a variety of manufacturers. They have a spline drive pattern on the outside of the bolt head. Removal requires a special ISIS Drive tool or a compatible socket or wrench.

Bolt Type Head Shape Tool Required
Hex Bolt Hexagonal Hex key or Allen wrench
Square Taper Bolt Square Square taper bolt wrench or flat-bladed screwdriver
Hollowtech II Bolt Hollow center with spline drive Hollowtech II tool or 12-point socket
Octalink Bolt Spline or star-shaped Octalink tool or compatible socket or wrench
ISIS Drive Bolt Spline drive on outside of head ISIS Drive tool or compatible socket or wrench

Removing the Right Crank Arm

The right crank arm is typically removed using a combination of tools. The most common tools used for this task are a 14mm hex wrench or socket, a 5mm hex wrench, and a crank puller.

Required Tools:

Tool Description
14mm hex wrench or socket Used to remove the crank bolt
5mm hex wrench Used to loosen the crank arm pinch bolt
Crank puller Used to extract the crank arm from the spindle

Detailed Instructions:

  1. Remove the Pedal: Using a 15mm socket or wrench, remove the pedal from the right crank arm.
  2. Loosen the Pinch Bolt: Locate the crank arm pinch bolt on the inside of the crank arm, near the bottom bracket. Use a 5mm hex wrench to loosen this bolt but do not remove it completely.
  3. Remove the Crank Bolt: Using a 14mm hex wrench or socket, remove the crank bolt that holds the crank arm to the spindle.
  4. Extract the Crank Arm: Thread the crank puller onto the spindle, ensuring that it is properly aligned with the crank arm. Tighten the crank puller bolt gradually until the crank arm pops off the spindle.

Removing the Left Crank Arm

Removing the left crank arm is a bit more involved than removing the right arm. Here’s a step-by-step guide:

1. Gather Your Tools

You will need:

– 8mm Allen key or hex wrench
– Pedal wrench
– Chain whip
– Rag or cloth

2. Remove the Pedal

Using the pedal wrench, turn the left pedal counterclockwise to remove it.

3. Remove the Chainring Bolts

Using the 8mm Allen key or hex wrench, loosen but do not remove the four chainring bolts. These bolts are located on the inside of the chainring.

4. Remove the Chain

Using the chain whip, remove the chain from the chainring.

5. Remove the Crank Arm

This step requires a bit of force, so be careful not to damage the crank arm or spindle.

– Hold the crank arm with one hand and place the 8mm Allen key or hex wrench in the crank bolt.
– Turn the crank bolt counterclockwise until it is loose.
– Use a rag or cloth to protect your knuckles and pull the crank arm straight off the spindle.

6. Clean and Inspect

Once the crank arm is removed, clean the spindle and crank arm with a rag or cloth. Inspect the parts for any damage or wear.

Cleaning the Crank Threads

Removing grime, old grease, and debris from the crank threads is essential for a successful crank removal. Here’s a detailed guide on how to clean them:

Materials needed:

  • Rag or cloth
  • Cleaning solvent or degreaser
  • Toothbrush or small brush

Steps:

  1. Wrap a rag around the crank arm to protect it from damage.
  2. Apply the cleaning solvent to the threads and let it sit for a few minutes to penetrate the dirt.
  3. Use a toothbrush or small brush to gently scrub away the grime and grease.
  4. Wipe the threads clean with a fresh rag or cloth.
  5. Inspect the threads for any remaining debris and repeat the cleaning process if necessary.
  6. Allow the threads to dry completely before proceeding with crank removal.

Tips:

  • Use a non-abrasive solvent to avoid damaging the thread surface.
  • If the threads are heavily caked with grease or dirt, consider using a stronger cleaning solution or letting it soak for a longer period.
  • Pay attention to cleaning the areas around the pedal threads as well.
Solvent Options Properties
Mineral spirits Mild odor, safe on most surfaces
Isopropyl alcohol Fast-drying, leaves no residue
Denatured alcohol Stronger than isopropyl alcohol, evaporates quickly
Citrus cleaner Biodegradable, safe for aluminum parts

Applying Lubricant

Before attempting to remove the pedal crank, it is crucial to apply lubricant to ease the process and prevent damage to the components. Here’s a step-by-step guide to applying lubricant:

  1. Identify the location: Locate the junctions where the pedal crank bolts connect to the bottom bracket shell (the central part of the bicycle frame that houses the bearings and spindle).
  2. Clean the area: Use a degreaser or mild detergent to clean any dirt or debris accumulated on the crank bolts or bottom bracket shell.
  3. Apply penetrating oil: Spray a generous amount of penetrating oil onto the pedal crank bolts. Allow it to sit for a few minutes to penetrate and loosen any corrosion.
  4. Lubricate the threads: Apply a thin layer of grease or anti-seize compound to the threads of the pedal crank bolts. This will further reduce friction and prevent the bolts from seizing.
  5. Lubricate the bolt heads: Apply a small amount of grease or anti-seize compound to the bolt heads where they contact the surface of the bottom bracket shell.
  6. Wipe away excess: Use a clean cloth to wipe away any excess lubricant that may have dripped or smeared onto surrounding areas.
  7. Wait: Allow the lubricant to settle and penetrate for a few minutes before proceeding to remove the pedal crank. This will increase the effectiveness of the lubricant and make the removal process easier.

Note: It is recommended to use a high-quality, bicycle-specific lubricant for optimal results. Avoid using general-purpose lubricants, as they may not provide sufficient protection or may damage the bicycle components.

Tightening the Crank Arms

8. Tightening the Crank Bolt

The crank bolt is a crucial component responsible for securing the crank arms onto the bottom bracket spindle. Proper tightening is essential to ensure a safe and secure connection.

a. Applying Grease

Before tightening, it is recommended to apply a thin layer of medium-strength threadlocker (such as blue Loctite) to the threads of the crank bolt. This will help prevent it from loosening over time due to vibrations.

b. Tightening Sequence

Tighten the crank bolt gradually in a crisscross pattern. This will help distribute the force evenly and reduce the risk of cross-threading or overtightening. Use a torque wrench to achieve the specified torque, as excessive force can damage the threads.

c. Final Check

Once the crank bolt is tightened, use a wrench to double-check its tightness. If it rotates easily, retighten it according to the specified torque. It’s crucial to ensure that both crank arms are securely fastened.

Crankset Type Tightening Torque
Square Taper 35-50 Nm
Octalink/ISIS Drive 50-80 Nm
Hollowtech II 68-80 Nm

Inspecting and Testing

Before attempting to remove the pedal crank, thoroughly inspect it for any visible damage or wear. Check for loose or damaged bolts, stripped threads, or any other signs of a compromised crank. If anything unusual is observed, it’s best to seek professional assistance to avoid further damage.

To test the crank’s functionality, place the bicycle on a stable surface and grab the pedal firmly. Try to rotate it in both directions. If there’s any noticeable resistance or grinding noises, it may indicate an issue with the crank bearings or other internal components. If the crank rotates smoothly without any resistance, you can proceed with the removal process.

9. Using a Crank Puller

If all other methods fail, you can resort to using a crank puller—a specialized tool designed to remove pedal cranks safely and effectively. Here’s a detailed step-by-step guide:

a. Preparation:

  • Remove the pedals.
  • Wrap a rag or cloth around the crank arm to protect it from scratching during the removal process.

b. Attaching the Crank Puller:

  1. Choose the appropriate puller for the type of crank you have. The puller must fit securely on the crank without any play.
  2. Thread the puller onto the crank spindle (where the pedals were attached) until it’s fully tightened.

c. Removing the Crank:

  1. Screw the center bolt of the puller until the crank arm starts to loosen.
  2. As the crank arm continues to loosen, gently tap it with a hammer or mallet to encourage its release.
  3. Once the crank arm is completely loose, unscrew the puller and remove it.

1. Gather Your Tools

You will need a few basic tools to remove a bicycle pedal crank:

  • Allen key or hex wrench
  • Wrench
  • Chain whip (optional)

2. Remove the Pedal

Start by removing the pedals from the cranks. Insert the appropriate Allen key or hex wrench into the bolt on the back of the pedal and turn it counterclockwise to loosen the bolt. Once the bolt is loose, remove the pedal by hand.

3. Remove the Chainring

If the crankset has a chainring, you will need to remove it before you can remove the crank. Use a chain whip to hold the chainring in place, then use a wrench to loosen the bolts that are holding the chainring to the crank. Once the bolts are loose, remove the chainring by hand.

4. Remove the Crank Bolt

The crank bolt is located on the inside of the crank arm. Insert the appropriate Allen key or hex wrench into the bolt and turn it counterclockwise to loosen the bolt. Once the bolt is loose, remove it by hand.

5. Remove the Crank Arm

With the crank bolt removed, you can now pull the crank arm off of the spindle. If the crank arm is stuck, you can use a rubber mallet to gently tap it loose.

Troubleshooting Common Issues

1. The crank bolt is stuck

If the crank bolt is stuck, you can try using a penetrating oil to loosen it. Apply a few drops of penetrating oil to the bolt and let it sit for a few minutes. Then, try to loosen the bolt again.

If the crank bolt is still stuck, you can try using a larger wrench or an impact wrench. Be careful not to overtighten the bolt, as this can damage the crank arm.

2. The crank arm is stuck

If the crank arm is stuck, you can try using a rubber mallet to gently tap it loose. Be careful not to hit the crank arm too hard, as this can damage it.

If the crank arm is still stuck, you can try using a crank puller. A crank puller is a tool that is designed to remove stuck crank arms.

How to Remove a Bicycle Pedal Crank

Removing a bicycle pedal crank requires a few specialized tools, but it is a relatively straightforward process. Here are the steps on how to do it:

  1. Gather your tools. You will need a pedal wrench, a crank puller, and a chain whip.
  2. Place the bicycle in a stand to keep it stable.
  3. Remove the pedals. Use the pedal wrench to loosen the pedals and remove them by hand.
  4. Install the crank puller. The crank puller is a tool that screws onto the crank arm and pulls it off the bottom bracket spindle.
  5. Tighten the crank puller. Use the wrench to tighten the crank puller until the crank arm begins to loosen.
  6. Remove the crank arm. Once the crank arm is loose, you can remove it by hand.

People Also Ask

How do you remove a crank without a crank puller?

If you do not have a crank puller, you can remove the crank using a hammer and a punch. Place the punch on the back of the crank arm and tap it with the hammer until the crank arm loosens.

Can you remove a bike crank without tools?

It is possible to remove a bike crank without tools, but it is not recommended. You can use a hammer and a punch to loosen the crank arm, but this can damage the crank arm and the bottom bracket spindle.

How do you tighten a loose crank?

To tighten a loose crank, you will need a crank tightening tool. The crank tightening tool screws onto the bottom bracket spindle and tightens the crank arm. You can purchase a crank tightening tool at most bike shops.