How to remove crank bike

This article will assist in identifying the crank system found on your bike, and direct you to the article that outlines the full process of removal and installation.

In this in-depth step-by-step tutorial, we'll talk you through the process of removal and refitting for the four major types of crankset — Shimano, self-extracting cranksets SRAM, FSA , Campagnolo and square-taper. Most modern Shimano road, mountain and gravel bike cranksets are comprised of two pieces, with the spindle bonded to the driveside arm. These are known collectively as Hollowtech II cranksets. The non-driveside crank arm is fitted to the protruding portion of the spindle. This is clamped in place using an integrated clamp. Shimano still produces three-piece Octalink and square-taper cranksets.

How to remove crank bike

Your crankset or chainset comprises the chainrings and cranks, as well as the spindle that connects them, which in most modern cranksets is integrated into the drive-side crank right-hand side. There are many reasons why you might want to remove this — perhaps to fit a new bottom bracket the bearings that allow the cranks to turn smoothly , or to replace worn-out chainrings. The only special tool you need for this is a wrench with a suitable adapter for the adjustment cap in the left-hand crank. Our guide is based on a crankset using a Hollowtech-type external bottom bracket, but most crank systems use similar methods. First, use a 4mm Allen key to loosen up the hex bolts that hold the left-hand crank arm onto the crank spindle. Next, take the bottom bracket tool and fit the black smaller ring into the crank arm adjustment cap. The left-hand crank should now pull away from the spindle easily. If you find it hard to budge, you can ease it out by tapping the end of the spindle with a rubber mallet — but cover the end with a cloth and use only gentle force to avoid damaging it. Use your cloth to wipe away any gunk inside the BB and inspect the shell for loose bits before checking how smoothly the bearings roll. For a Pressfit-type bottom bracket, see our guide to installation in issue Apply a dab of fresh grease to the spindle, then push it through the bottom bracket. You may need the mallet again to ensure it goes all the way through. Grease the splines on the end of the spindle then refit the left-hand crank, ensuring it is perfectly aligned. Replace the adjustment cap, screwing it in gently using the Bottom Bracket Tool. Use your torque Allen key to tighten the crank arm bolts; the recommend torque is usually shown on the crank arm — Nm for our Shimano crankset.

Article Summary. Loosen the cranks with a crank extractor for non-extracting cranks.

Last Updated: December 6, Fact Checked. This article was co-authored by Ikaika Cox. He has been a bike mechanic since , beginning as a volunteer with the Provo Bicycle Collective, and growing and honing his skills as a bicycle mechanic and educator in multiple Bicycle Collective locations over the years. There are 10 references cited in this article, which can be found at the bottom of the page. This article has been fact-checked, ensuring the accuracy of any cited facts and confirming the authority of its sources. This article has been viewed , times. A bike's cranks must be properly maintained to keep your bike operational.

Last Updated: December 6, Fact Checked. This article was co-authored by Ikaika Cox. He has been a bike mechanic since , beginning as a volunteer with the Provo Bicycle Collective, and growing and honing his skills as a bicycle mechanic and educator in multiple Bicycle Collective locations over the years. There are 10 references cited in this article, which can be found at the bottom of the page. This article has been fact-checked, ensuring the accuracy of any cited facts and confirming the authority of its sources.

How to remove crank bike

Replacing or tightening a bike chain , changing a tire, or removing a crankset are a few basic skills you could learn which can help you save cash when it comes to bike repair or maintenance. No one born ready for any profession they choose. A doctor has to spend years studying before he can treat a patient. The crankset is where all the magic happens. The power of your strokes is converted to speed right at the heart of the crankset. Fun Fact: fast pedaling burns fat. The pedals and the bottom bracket are connected by the cranks. The chain is driven by chainrings. Some of the most common reasons we remove cranks are to replace them, service the crank area, or to clean. The first step would be to identify the type of crankset your bike has.

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This is an easy way to screw the pedal back onto the bike. Self-extracting cranks do not have pinch bolts. If your crank has these, insert a 5mm Allen key into the holes at the top of the arm and rotate the key counterclockwise. Shift the chain into the small chainring and smallest cassette cog. Subscribe to Cyclist Magazine. For this type of crank, you also need to remove the plastic pre-load screw on the left, or non-drive, side of the bike. Most cranks require a 4mm-8mm Allen key. However, it's located on the driveside for older generations. Your crankset or chainset comprises the chainrings and cranks, as well as the spindle that connects them, which in most modern cranksets is integrated into the drive-side crank right-hand side. Ikaika Cox. Install the driveside crank arm and then the non-driveside. If you see separation of threads even in the slightest, stop. April 13, The non-driveside crank should now remove by hand, although you may need to give it a light tap with a rubber mallet from the inside of the crank arm. Loosen these off a little at a time — don't undo one fully then the other.

For bicycle owners, removing a crank can often be one of the most challenging and frustrating components of bike maintenance. Not only can it be difficult to find the right tools for the job, but many cyclists also find themselves struggling with techniques and methods for taking off a crank without damaging their bike or risking injury.

Shift the chain into the small chainring and smallest cassette cog. Log in Social login does not work in incognito and private browsers. Popular Categories. If you need to know how to remove the crank, this article teaches you how to do so. Loosen these off a little at a time — don't undo one fully then the other. This is typical — keep going until the crank arm is free. Please log in with your username or email to continue. Trending Articles How to. This article has been viewed , times. Submit a Tip All tip submissions are carefully reviewed before being published. This washer is used to account for variations in frame shell widths and effectively acts as the bearing adjustment. Related Posts.