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Jeff Richwine Posted on Feb 25, 2015
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How can I get my crank arms off on my schwinn midmoor? Loosening the crank arm bolts don't do it. The whole crank, bottom bracket and shaft are loose. if I tighten the bottom bracket rings then the crank is too tight to rotate. And it makes a grinding noise when you pedal, sounds like rocks grinding together. Does this mean that the bearings are shot?

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Les Bradfield

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  • Contributor 33 Answers
  • Posted on Mar 06, 2015
Les Bradfield
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Yes the bearing are gone.

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goalie39

Ed

  • 479 Answers
  • Posted on Apr 19, 2009

SOURCE: How to disassemble crank bearing on Schwinn Mesa Mountain Bike

You wil need a couple of special tools, or be fairly creative with the tools you have.

  1. remove the dustcovers in the crank arms at the crank axle
  2. loosen the crank retaining nut/bolt.
  3. thread in a chank puller and pull the crank arms.
  4. remove the lock ring on the adjustable side of the crank axle (Requires lock ring wrench)
  5. remove adjustable bearing cup.
  6. remove axle and bearings
  7. replace or repair as needed.
Once you have it opened up ou can determine if you need new bearings or crank axle.
to assemble, reverse above procedure, insuring bearing play is minimalized.

Hope this helps.
Ed

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Michial Gueffroy

  • 1140 Answers
  • Posted on Jul 11, 2009

SOURCE: bike pedal arm keeps falling off as i pedal.

You need a new crank arm. If you ride with the nut loosened what happens is the square part of the bottom bracket shaft wears the hole out in the aluminum crank and it no longer fits snugly no matter how much you tighten it down.

Anonymous

  • 1788 Answers
  • Posted on Aug 04, 2010

SOURCE: Bad crank bearings can move crank arms small amount.

clicking can be a stiff link in your chain.

Anonymous

  • 8546 Answers
  • Posted on Jan 23, 2011

SOURCE: I have a 2008 Specialized

You probably need to completely remove the crank, grease it and reinstall it.

http://www.parktool.com/blog/repair-help

http://www.parktool.com/blog/repair-help/categories/crank-service

Find the correct BB type and follow the instructions. Of course, a crank extractor tool (which Park makes) is required, so if you don't have one you might want to take the bike to a shop and weigh the pros and cons of equipping for self-maintenance or having them do it once in awhile.

Anonymous

  • 2080 Answers
  • Posted on Apr 10, 2011

SOURCE: Raleigh Bicycle Passage 3.0 Crank arms

Yes, once you remove the crank arms and the pedals, you will need a special tool to remove the bottom bracket that contains the sealed bearings.

Here is a set of nice quick YouTube videos on how to replace a bottom bracket which shows the tools and techniques required:

http://www.youtube.com/watch?v=moIUDAyRH2I&NR=1

http://www.youtube.com/watch?v=QrkxaNgL6Y4


Just use your mouse to click on the link, which is the underlined and highlighted text just above. This will automatically open a new browser window for you and display the video.

Here is a link to the general description of your bike:

http://bicyclevillage.com/product/raleigh-womens-passage-3.0-3894.htm


And here is a link to the technical details:

http://bicyclevillage.com/product/specs/raleigh-womens-passage-3.0-3894.htm


If you want to replace the bottom bracket yourself, just bring those details into your local bike shop and ask them for the correct tool and replacement bottom bracket to purchase. If you just wanted to have them do the work, I don't think they would charge you more than $30 labour for it, plus the cost of parts of course.

Anyway, please comment back here to this page if you have any questions, have difficulty accessing the links, or just require further general assistance and I will respond as soon as I see it.

Thank you very much and good luck.

Joe.

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My diamondback 910ic exercise bike pedal crank arms misaligned
You will need to remove the shrouds on wither side of the Exercise bike. You will see on each crank, or at least one of them, there is a cotter pin with a bolt The cotter pin needs removing and you will be able to turn that pedal arm to 180' to the other one. Spare parts appear to be obsolete, but you should get parts for the crank arm from a good cycle shop. Very often the cotter pin needs to be filed to fit. Tightening the nut locks it in place. There are two videos, the second one refers to cycles which is where my experience comes from.

https://www.manualslib.com/manual/2258999/Diamondback-910ic.html#manual


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Apr 02, 2023 • Diamondback Cycling
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How to Identify the Type of Bottom Bracket on a Schwinn IC Pro

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My Airdyne AD-6 crank arms are ~45* apart, not 180* Can they be adjusted?
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Feb 25, 2023 • Schwinn Exercise & Fitness
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The left arm of the cranck don't come out,so i can't take the cranckset off the bottom bracket.Every bolt it's already untight. Thanks!! Stefano
There are 3 bolts to remove: 1 the main large cap in the center of the arm, and 2 bolts holding the arms in place. Remove all three completely. If the arm still will not come off easily, then take a large screwdriver and work in between the bearings and the crank arm and gently pry off.

The trick is too only move a little then go to another section and move another small amount. until the crank arm wants to loosen. The most likely culprit is a small black piece of plastic that is holding up the works.
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Got a 1999 Diamondback Wildwood bike and was trying to take off the crankshaft and front sproket. Do I need a special tool for that? What's the trick?
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My Schwinn High Timber has developed a thump when I pedal under load. The thump occurs when either pedal gets to the bottom. When coasting or pedaling not under load, there is no thump. There is no thump...
Sounds like one or both of the crank arms are loose. The crank arms are the aluminum bars about 10 inches long that the pedals are attached to. They are attached to the bottom bracket spindle by way of a square hole that is tapered so as to fit tightly as the nut on the end of the spindle is tightened. You can test this by trying to move the two crank arms in opposing directions. To tighten, you probably have to remove a dust cap to get at the nut. But if you don't have a wrench to fit, this is a 1 minute fix that any bike shop would probably do for you for free. To see this, Google images for --- bottom bracket crank arms --- good luck vote if you found this helpful Al K
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Sep 10, 2010 • Cycling
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Bad crank bearings can move crank arms small amount.
That would depend on the style of bearings (loose ball or caged balls vs sealed bearings) and possible bottom bracket damage.

Either way, a Bike Shop mechanic would probably need to assess it for you. Special tools are usually involved.

http://parktool.com/repair/byregion.asp?catid=61
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May 23, 2010 • Schwinn Mesa Gs Mountain Bike
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Fitted tiagra triple to cannondale caad9 frame. bottom bracket creaking
There are many possible causes for the noise you're hearing, but the most common source of creaks is loose crank arms.

You might be able to eliminate the sound by tightening the crank arms on the bottom bracket spindle. However, I would recommend removing both crank arms from the spindle and reinstalling them after lubricating the surfaces where the spindle and crank arm meet as well as the crank arm bolts. Use a high quality grease (not oil, such as Triflow) or anti-seize compound.

Torque the crank arm bolts to the factory spec. Crank arms bolts can take a lot of torque -- about 300 ft/lbs. Most people don't have a torque wrench, so you can "guesstimate" this by applying about 50 lbs of force on the end of a 6" long wrench.

Other possibilities are loose chainrings (check each bolt where they are attached to the crank), pedals (lubricate/service bearings), bottom bracket (check it is properly torqued), chain (look for tight links), derailleur idler gear, crack in frame.
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