How to NOT Strip Crank Arm Threads When Removing Cranks
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- Опубликовано: 11 июл 2024
- I have gotten asked a lot how to remove a crank arms with stripped threads. So I have have a couple videos where I remove stripped crank arms. But the easiest way is to not strip them in the first place. Most often they get stripped by mistakes that could have been avoided. So in this video I show how to remove crank arms and point out the most common mistakes and how to avoid them.
Park Tool Crank Puller Tool:
www.amazon.com/exec/obidos/AS...
How To Remove Crank Arm With Stripped Threads
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Make A Crank Arm Thread Chaser Tool Under $4
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@@vitalsigns2679 Put the crank on, put the washer bolt in, and tighten it down.
Why am I watching a video about how to remove a crank arm when I know how to remove a crank arm? Because it's RJ The Bike Guy, that's why.
Actually though lol
Same
Same here too.
You could just being playing the RJ drinking game. Have a drink every time he warns you about stripping threads.
Because RJ has de best and clearest direction's, and it's interesting and U can almost always learn a neat little trick from him..🚲..
What makes your channel so great is the fact you actually work on bikes that are either low end and/or beat up, which applies to a great many of us. All well and good working on a 7k Santa Cruz but it's nice to have folks like you working on humbler machines. Love your work, RJ
While not a 7k bike, this was a Cannondale and not a bad bike in it's day.
@@RJTheBikeGuy sweet! I've got my old super v that I've used your videos to service. Love the old cannos
From a friend, you only need to strip the threads once to learn to be methodical and careful. ;
Yeah, my friend also stripped the threads on a crank too... wish I, I mean he, would have watch this video before attempting to remove the crank
Always the most useful channel on RUclips. The lighting and camera angles are superb and I do learn a lot from you Ta.
i watched like 10 videos on how to use this tool and i was taking forever to figure out why i ccouldn't get this to work. yours made it so easy. thank you so much
Well done RJ, your video’s inspired me to recommission an old Raleigh frame that I got with new derailleur and brake cables etc etc. Keep up the good work.
Worked for 3hrs couldn't get crank arm to budge; applied heat with my mini butane torch & both arm came off within 15 min. each . great video gave me the idea that worked!!!!!
Great tip that - adding notches to old crank pulling tool!
I just stripped my inner crank threads, most likely by not making sure that the crank bolt washer was flush against the bottom of the crank bore. By being slightly cocked it sheared the inner crank threads when I torqued down the crank bolt, which I deduced when I saw how bent it was when I removed the bolt some time later. I've got several potential ways to get the crank off non-destructively, thanks to RJ's other videos, and be able to continue to use both the crank and bottom bracket.
Use the right tools and pay attention to all the small details. They really do matter!
I needed to see this before I stripped out a cheap replacement for an old bike rebuild. Very helpful video. I fell a lot better now about pulling a crank arm now. Thanks.
Another fine video. Thank you :-)
When torquing the removal tool - I sometimes find that the arm is stuck, and the thread is about to be stripped. So before going any further, i give the crank arm a solid tap with a mallet on both sides. This has helped out on many occasions .
Works on track rod ends, so I see how it could help here!
Agreed. A solid whack has helped me out on more than one occasion.. ^_~
Great informative and helpful video as always. hope all is well all the best Andy
Thank you for the tip about changing the tips on the crank puller. Even park tool videos don’t mention that! Save me a lot of frustration, I was wondering why the crank wouldn’t pull off as easy as Calvin was doing it.
Very useful, thank you!
Nice demo 👍🔧
RJ u might be correct here! Legend! All the best from Scotland bud
I watched a different tutorial about how to pull your crank arms with a puller. I just couldn't get it to budge. This tutorial explained the different sizes of puller tips. So, while I had the right tool it was the wrong size. This video is more thorough in explanation of the puller.
Thanks!
It's a miracle that you didn't strip the thread off.
Thank you!
Great tips! Those old plastic covers can be such a headache when they get sun damaged and seized. I always change bottom brackets to internally threaded and replace with a hex bolt with integrated dust caps to make sure no-one has to deal with any of that again.
RJ your video's are the best so good to see how to repair older bikes instead of some thousand Pound/ Dollar bike that I am never going to afford. 👍
Very nice.
Thank you again.
Those 105 1050 FC cranks were 👌... Quality cranks those!!
Nice to have some USA made Craftsman tools. I'm SO glad I bought mine years ago.
Glad to see you getting better after trauma!
I am doing much better, Feels normal a lot of the time, but it still gets achy.
When you said home made thread chaser I thought “I wonder what he used?” Lol! You did the exact same as me! An old extractor with some slots cut in the threads 😂
Sometimes you’ll get a crank that refuses to budge! I have an extractor that uses an Allen key for the inner part, I find if I have a crank that won’t budge wind the puller up tight then remove the Allen key and give the puller a sharp tap with a hammer to “shock” it then tighten a little more and repeat until it comes loose. There’s always the tried and tested way of penetrating fluid and heat for the most stubborn cranks as a last resort.
What's with the 2 dislikes? Your videos are always instructional RJ
David Trifiro probably bots
Educational
I find two things more helpful than the tips suggested here: #1 use high-pressure air to remove any debris on the threads, and #2 spray a high-pressure solvent into the threads to clear any gunk. _Only_ if either one of those approaches are not working do I resort to any mechanical thread cleaning.
The all is one of my favorite bike tools it has so many uses, I like it for taking the freewheel lock ring off it works better than the tool that's meant for it
I have several awls. Useful tools.
It is utterly criminal how your video on crank arm removal doesn't come up first when searching.
Just stripped all the thread off a rental bike crank arm because I didn't know about square taper/octalink/isis.
I trained on motor vehicles petrol and diesel engines and gear boxes and very seldom used an adjustable wrench and seem to prefer using a spanner that fits. good video very interesting, don’t forget the gloves !!!😓
Good 👍
With brittle dust caps: drill two small holes and use a pin spanner to unscrew. Learned from a wise bike mechanic in rva
I've watched videos on how to remove crank arms and yet I still stripped the thread. Made the mistake of using Shimano octalink crank arm puller. Not only did it stripped the thread, it compressed the square hole of the crank onto the spindle, making it impossible to even use a gear hub three jaw puller to remove the crank arm. I destroyed the three jaw puller while at it and the crank arm still won't budge. Wished RJ would have made this video sooner.
RJ...how the hell are you my friend? I was thinking about you and I realized it's been awhile since I received a notification for any new videos or updates from you. Then I started to worry about you because i know your not a slacker...I know you love what you do.. so now I'm worried about you and praying you didn't aggravate your back injury by getting back on the horse too soon. Hopefully your just on an awesome vacation somewhere enjoying yourself and healing. Can't wait to hear from you and watch your next video. 💪👈😎 Ride hard... but not too hard til your healed up dude 😉
My back is much better now. I have been busy doing other stuff. Working on declutter the house a bit, so the garage has stuff in it (listed to be sold on craigslist), where I usually shoot my videos. I need to move it around somehow so I can video.
Ty
I had similar issue. I had to fix the thread on the crank arm before thread removing tool.
Any suggestions for if the crankpuller tool gets stuck. I can’t unwind it to remove and try again. Any advice is appreciated.
Can you adopt other ceramic bearings in mavic eclipse front wheel
You rock RJ, great video as always
how about an e-bike conversion for a vid...could even make it a series..cheers from germany from a long time follower
When the threaded dustcap broke on me I used a heat gun, expecting the plastic to melt and shrivel. It didn't, but it became very soft and was very easy to remove with a screwdriver or pliers.
Walau gak ngerti basanya
Aq suka lihat penuh ide2 kreatif
I like vidio
Gracias por compartir tu ingenio maestro RJ!
Wish i'd watched this before trying to removing the 30 yo Suntour crank arms from my old mountain bike. They stripped out with little effort, but that might have been avoided if I'd been a bit more methodical. Now to find a 3 arm puller...
Treadmill keysfitness 5500.
The holes that hold the bars and the bolts for the back and front rollers are stripped.
Welded nuts where the holes are.
I am having a problem adjusting the belt when the treadmill is running.
Any sugestions will be appreciated.
Sound advice. Another tip for not cross threading the tool into the crank is align the tool with the hole and turn the tool counter clockwise. When you feel and hear the threads click, they are ready to start turning the correct way and should not cross thread. I work with aerial feeder cables with screw on plugs and connectors, and this is the method we use on them to ensure cross threading does not occur. It can be used on all applications where you need to align threads.
Part of the issue is the opening of the hole is sometimes angled slightly. Like on this one. So it's not as easy on many cranks.
I made this rookie mistake and didn’t notice it at first and damaged the treads. I was lucky and corrected it on the second try.
Do you have a video where bike witch have internal hub gearing to change derailleur & "chain-gear" system?
I don't have a video. It's possible probably. Mounting a rear derailleur might be tough.
I use a torch to burn the plastic a little. Probably heating is enough. It makes it like gum that you can pull out easily. Leaves you having to clean the cranks tho
I've washed the threads with water, sometimes with a little WD-40 to remove debris. Your thread chaser tool is awesome, I have to make one for myself.
I use grease on the threads of the puller. I thought that was standard practice but I see that you didn't. Is there a reason to avoid using grease?
Just never have.
Clean the threads and by all means spray some WD-40 on the threads of the remover to facilitate a smooth connection. Makes it easier to get the crank remover back out of the crank also.
Everytime I see one of those old Cranksets it makes my knees and back scream out in agony. UNBELIEVABLE that was the 'Standard' back then! You were considered a 'WIMP' if your Road Bike had a 42/52t 'Standard' Crank with a Freewheel with a larger than 24t 'Low Gear'. That's 46 GEAR INCHES 4C'sS! And I CAN'T Believe back in my Teens/20s in the 80's/90's I actually CLIMBED Hill's, some STEEP 15%+ Gradient in that INSANELY HIGH Low Gear! I have a HELL of a time scaling steep grades like that in 28 GI now! (My Modern Bikes I set up with Compact 34/50t Cranks and 11-32t Cassettes). Hell my '5th Gear' (34/20) is SMALLER than '1st Gear' on my Road Bike back in High School/ College. It's just EMBARRASSING getting Old!
I resemble that! :D
HOW DO YOU PUT THE ASSEMBLY BACK TOGETHER?
How hard is it to rehab your bottom bracket? I know you have a video on it I have an old Schwinn crosscut hybrid and the B.B. is trashed
Overhaul it or replace it with a cartridge. I have videos on both.
does anyone knows if the new sunrace Downtube shifter are serviceable, mine aren´t working propertly
@Orange OwL after cleaning they started to work as intended, don´t know how they got so dirty in the first place, thank you
Are the diameters of the round tips of the "square taper" and "octalink" crank puller standard or varied? That is to say, what diameter tip is used on ST, and what diameter tip is used on OL?
There is no "standard" puller tip size. There are no ISO regulations for puller tips.
I just did this yesterday! I've been having trouble with my bottom bracket staying properly tightened along with crank bolts staying in place. I put in a new b.b. last winter and am learning as I go.
If the crank bolts are not staying in place, it could be the mating surfaces in the crank arms are damaged and are moving subtly when riding.
Aalso you can use a heat gun on the plastic caps. Heat them up then they should come out easily - or a lot easier anyway without having to pick away much and damage the threads.
Do you know how to remove a crank puller thats stuck to the crank arm without any damage? mine got stuck and i dont know what to do
Unscrew it.
a year late!!!! I screwed up leaving too big and end on the puller I bought and stripped the threads...blowtorch heat then tap with hammer off fell the arm.... funnily the replacement I managed to find In Phnom Penh, Cambodia, when I put it on noticed the threads were non-existant.... if its coming off I guess the heat is coming out again!!!!
Great video. I apply some anti seize lube to my crank arm puller threads.
I use a little grease on the tool's threads also and find it significantly reduces any thread nackering. I find a NDS crank arm a great tool for tensioning when building wheels so don't toss it if you do mess one up.... ;)
Never seen a washer in there like that, so I'd have never looked for one. Good tip!
If the cap was missing, I like to spray some wd40 or similar in the threads to help loosen any crud.
Unior tools do a crank puller that fits both sizes of square taper/octalink(without having to swap ends)it's also got a 14mm socket on the end,they also do a tapered version to remove stripped thread cranks,great tools if you can find them(they make park look cheap and nasty tbh)
I am trying to get the crank off and follow everything here in the video but all that happens when I tighten the outside bolt is that the inside one comes out and strips the threads. I have tried tightening the inside bolt but the same thing happens repeatedly. Why? I don't understand. The crank arm doesn't move at all.
Once the threads are stripped, then this tool won't work anymore.
They make a tool that might help:
uniortools.com/eng/product/1662-4-tapered-crank-puller
Or try this:
ruclips.net/video/9n1z2kwmL8o/видео.html
My crank has a fenale hex looking bolt and every allen key i have is too small. ratchets wont fit eithrr
you are the best bike mechanic , your skills will be highly sought in an oil crisis .
I have the park tool for this. I never have problems with this. What I do have problems with is the crank bolt itself rounding off. The problem after that is that because it is inside the crank nothing else fits on it. You can't get a crescent wrench on it. I have better impact sockets but they're all too thick to get in there so like you I am stuck using the same 12 point Craftsman socket. What is really needed is a thin walled 6 point socket. That would be ideal but I haven't had enough need of a set to make the purchase yet. I feel like I have too many sockets already, they weigh a ton.
Are you using a "close enough" imperial socket? Or are your sockets really such bad quality?
@@MrAmorti I said I use the same exact 14mm Craftsmen 12 pt socket you see RJ use in the video. When a bolt has started to round off usually a 12 pt socket just makes it worse unfortunately.
I have never had the bolt round off.
@@RJTheBikeGuy I should probably just buy a 10 pack of those bolts to have on hand.
Like these? I like this kind.
www.amazon.com/exec/obidos/ASIN/B07RYVLMP8/ref=nosim/youtube25-20
I just take a pocket cigar torch to it and jam in a small flathead screwdriver diagonally to melt a gap so i can squeeze it together and just pull it out with needlenoses when the threaded caps snap off
If the threads are totally crapped you can use a engine crank puller itll leave marks but get it off
I have a 1983 Norco 12 speed and it has a nut instead of a bolt at 1:35 Will that puller work in my case?
Yes. It will push against the end of the threaded part of the spindle. Make you have the center part of the puller retracted so the puller threads in fully.
RJ The Bike Guy Thanks. I've used pullers before on my engine harmonic balancer on my Chevy.
This puller is a little different I think.
You only forget that washer once.
I like to melt broken dust caps out.
How do you melt them out? Propane torch? Heat gun?
@@RJTheBikeGuy Yup. Old faithful. Propane torch just hovering over it gently. It'll soon turn soft enough to pick out in one go.
As a last resort, I always keep gear pullers around. They're cheap enough and collapse small enough to store anywhere. I boned myself the last time by trying to force the crank puller and it stripped the threads so out came the gear puller and off went the crank.
ruclips.net/video/jrpIoXxVyTs/видео.html
I have had success with burning them plastic caps out if necessary
Sometimes i put my frame flat because it makes it a bit easier.
Hope you doing well!!🤙🏻
i just recently destroyed my threads on the crankside accidentally and now im looking for solutions how to remove this crank
ruclips.net/video/9n1z2kwmL8o/видео.html
Do you need a different tool for campag chain sets of the same vintage?
Campagnolo use all differant tools for every thing so I would think so
The puller will work for most campy cranks. Though some campy cranks had self extracter bolts.
I think I watched a park tool video on campagnolo crank arms before so they could help
👍🐾👍
too late i just damaged my Old Duraluminum cranks (well they are kinda bent so nothing to lose ) but still anoying
My crank has a half inch wobble from side to side what could be the problem?
Probably the crank or the bottom bracket. Maybe the chain ring is bent. I haven't worked on your bike.
Check if its tightened.
I nearly stripped mine because of the stupid washer, stripped only a little of the threads.
wished I’ve seen this video earlier
Them plastic crank arm plug's that hv the scru drivr slot in em i put a dab of silicone inside and drop a dime in hole = no dust or dirt + if U ever need 20 cent's U got it !! LOL
Yeah. Don't use cheap pullers and tighten them in, but not very tight, with a wrench. I completely remove the centre of the puller until I need it. Why yes; I have stripped a crank arm with a cheap puller.
If the crank arm threads are stripped then what ?
Bike shop mechanic told me to put some grease/lube on the treads of crank remover tool. You didn’t do that. Now I question if I should or should not do that.
I never have.
Can you make a video on how to take cracks off without a crank puller?
Are they stripped?
@@RJTheBikeGuy no, i just think it will be intresting to watch
I have a video linked in the description. But if they are not stripped, then buy the tool.
And don't use a impact wrench whatever you do.
If you have to use a thread chaser, it would be worthy to spray a lubricant in there. And flush out the debris once the thread chaser is removed.
All really usefull information. You forgot to mention that after removing the crank arms you can throw them as far as possible and get a Hollowtech 2 drivetrain to avoid all this old-heavy-unseal-unpractical-outdated-tech🤣🤣🤣
These can be overhauled where Hollowtech BB's can't So if you live in a place where bike parts are not available, or you are bike touring, then it might come in handy to have one of these BB's. I have bikes with both.
Too late, I already stripped the thread in left arm :P At least the drive side thread is ok.
Ouch. How did you do it?
I prefer to use ring spanners great video useful
These were combination wrenches with box ends on the other side,
i already stripped my threads please help :(
ruclips.net/video/9n1z2kwmL8o/видео.html
@@RJTheBikeGuy damn mate you have solutions for literally everything, thank you so much😭❤️
Often you mention French and Italian bikes because they had standards that were different. Have you ever heard of crank puller tool of a different width ? Like way smaller. I had a bike long ago, i believe it was italian and from the 80s and the non drive side the threading was very normal but on the crank side, it was... very smaller, you just needed another tool i obviously never found or even come across. There was a variety of small strange things on this bike and the newbie i was thought... well... it’s me, i,m just lame. But no, later, became more knowleadgeable and understood how weird it all was.
There might have been, but I am not aware of it. These are the only ones I know of: ruclips.net/video/0iGw9eUC_Ic/видео.html
It might have been set up for a self extracting bolt.
How’s the back?
Getting better.
Imagine your face when you pop out dust cap and there is no tread at all(yep, clean and smooth aluminum crank from china)
I have never encountered that yet.
Worst case, you just remove the bolt and... ride the bike. With torque applied, it’s slowly going to loosn and come off.
And that is how to ruin a set of cranks! The mating surfaces can get damaged and they may never stay tight again.
ruclips.net/video/jrpIoXxVyTs/видео.html
I'd just undo the bolt a few turns the whack on the outside aluminum crank with a wooden or plastic mallet. If that didn't work I'd apply heat to the outside then whack it some more.
The mechanics of doing this make it seem like it belongs to the 18th century.
A guy brought me a bike that had a socket hammered in the crank so I had to use my dremel to cut the socket and a gear puller to get the crank off because it was too far gone, got him set up with a new crank and back on the trails
Wow.
If u dont have a thread chaser tool,use an old toothbrush dipped in petrol to clean the threads,keep a rag handy to wipe up the mess after 😊😊