Question about Schwinn Mesa Gs Mountain Bike

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The crank arm is stripped on the left side of the bike

The crank arm is stripped on the left side and the pedal falls off. Is there a suggested approach to repair/replace the crank arm?

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  • Master
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Yes, the crank-arm could be replaced.
1.You would need to remove the flat nut holding the crank to the frame. And then take out the bearing.
2. A special open-ended wrench is required to remove this nut. Please visit your local bicycle shop for a new crank-arm, and the required tools, also.
3. Put in new crank-arm and its bearing.
4. Grease the bearing.
5. Tighten nut.
6. Give it a test ride.

Posted on Dec 10, 2009

Testimonial: "Thanks very much for your assistance. I have ordered the crank arm and will follow your input."

  • Darcy Breau
    Darcy Breau Apr 29, 2016

    I had the same issue, replaced my crank arm, locktite etc. Blew the new crank arm in 2 rides. ( casual bike paths). I suggest upgrading the whole crank assembly. This is my plan. Either that or carry a 14mm socket with you so you can tighten on the fly.

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Above instructions are inaccurate, incomplete and not applicable to most situations. You would be better to Google "replace left crank arm" and follow the instructions that match the type of arm you have. Best yet if you have a bike co-op nearby go to them for assistance and use of their tools.

I’m happy to help further over the phone at https://www.6ya.com/expert/donald_f2ed37026a3ac881

Posted on Apr 30, 2016

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1 Answer

Model :x 3519 right pedal stripped


If it is the pedal's threads that are stripped just purchase a new pair. If it is the threads on the crank that the pedal goes into then either replace the crank arm if it's the left side or find a bike shop that can install a "Helicoil" to repair the crank. Threads will be stronger than the original

I’m happy to help further over the phone at https://www.6ya.com/expert/donald_f2ed37026a3ac881

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Stripped bicycle pedal


Better replace the pedal and most probably the crank arm as well. Sometimes a new pedal can cut the threads true again on the crank arm but the crank arm may need replacement too, depending on the damage. Remember to fit the correct side pedal. The pedal threads differ between left and right and pedals are usually marked "L" or "R".

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How does a helicoil for stripped crank arm work?


I would just stop by a welding shop and have them weld the pedal arm on. You can buy another whole bike for what it costs to get a helicoil like that done. If it's the left hand thread, impossible.

Nov 25, 2013 | Huffy Blackwater Men's 26-Inch Mountain...

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The pedal will not tighten up on the crank arm on the chain side, i think the thread has been stripped


Take it to a bicycle shop or a mchine shop and have them look at it. Maybe they can tap it out. Or the Bike Shop can replace the whole crank.

BTW: if there is resistsnce when tightening something like that - STOP.

Did you do the left side yet? It's left threaded.

Aug 22, 2011 | GT Chucker 3.0

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The pedal assembly on my blackwater somehow got stripped always had problem with pedals coming off


If the thread on the crank arms that hold the pedals are stripped, you will need a new set of cranks. That is definitely a job for the bike shop. Make sure the pedals are snug in the arm, Right side pedal has right-hand thread, left side (looking down when you are on the bike) has a left-hand (reverse!) thread.

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My right pedal is stripped. how can you repair/replace the part the pedal screws into?


If it's stripped the crank arm will need to be replaced. It's probably more expensive to fashion a repair with helicoils and taps, even if you COULD find a left-handed one for the left side.

Get on your favorite search engine and look for "(your brand of crank) (size)" or just take it to a Bike Shop and let them deal with it. You would need special tools for crank removal anyway.

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

Jun 14, 2011 | Dynacraft Cycling

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Gave my 10 year old son a 20" huffy axis this past Wednesday for an early Christmas present. The pedal fell off Friday! How do I put it back on? The pedal, as well as the thing that screws into the...


Your pedal falling off is never a good thing, nor is the entire crank arm assembly.

For this one you are best taking it into your local bike shop and have them take a look at why both of these fell off. There are a number of reasons, from stripped thread to missing bolts and nuts to improper assembly. None of these are a good scenario with a childs bike, or any bike for that matter.

Alternative, and my personal suggestion - Take the bike back to where it was purchased and exchange for a new one. These parts should not fall off after years of riding let alone 2 days, and would constitute a warranty and safety issue.

I WOULD NOT RECOMMEND CONTINUING TO RIDE THIS BIKE, SINCE YOU DO NOT KNOW WHAT ELSE WAS IMPROPERLY ASSEMBLED.

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1 Answer

Left pedal stripped out


There are only two realistic solutions for this.

1) Replace the left crank arm that the pedal attaches too.

2) Insert a helicoil to replace the threads.

If replacing the left crank arm is not possible, then go the helicoil route. Either way this is best done through a bike shop as the helicoil system requires a good amount of mechanical knowledge and some specialized tools.

Nov 14, 2010 | Cycling

1 Answer

Left pedal broke can i get replacement?


All depends on if you stripped the crank arm, you may have to replace your crank arm if you rode with a loose pedal. Pedals are sold in pairs, and there are 2 sizes, a one piece crank is 1/2" and 3 piece crank is 9/16", take your bike to the bike shop and they will tell you if you need a new crank arm or not. It will do no good to just replace your pedal if there is a bad crank arm thread, it will not hold.

Sep 26, 2010 | Cycling

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I can not get the peddle off the crank. peddle part number fc-m500 crank set shimano sg


You have to have a pedal wrench and they pedals have a right thread right side and a left thread the left side. The right side is the chain side, to tighten either one, you put the bike in front of you and turn the pedal wrench towards you to tighten, to loosen turn the wrench to the rear. This is very important, do it wrong and you strip your crank arms. Pedals are marked R for right side, L for left side. It is important to know this information. Most manuals do not tell you.

Sep 20, 2010 | Shimano Cycling

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