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Park Tool Extracteur de manivelle

4,7 étoiles sur 5
5 étoiles
272
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4,7 étoiles sur 5 332 Commentaires sur Amazon.com us-flag |

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Il ne reste plus que 3 exemplaire(s) en stock (d'autres exemplaires sont en cours d'acheminement).
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  • Park Tool Compact Crank Puller by Park Tool
  • Kryptonite Attachment

Guide d'achat pour broyeurs de végétaux
Guide d'achat pour broyeurs de végétaux
Une hésitation sur le modèle qui correspond à vos besoins ? Retrouvez nos conseils pour bien choisir le broyeur qu'il vous faut en lisant notre Guide d'achat pour broyeur de végétaux.

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Descriptif technique

Information sur le produit
Hauteur4 pouces
Longueur8 pouces
Poids905 grammes
Largeur6 pouces
Batterie(s) / Pile(s) incluse(s) Non
MarquePark Tool


Détails sur le produit

  • Dimensions du produit: 21 x 2,7 x 8,3 cm ; 136 g
  • Numéro du modèle de l'article: 142546
  • ASIN: B0028YUZSS
  • Date de mise en ligne sur Amazon.fr : 1 juin 2010
  • Moyenne des commentaires client : Soyez la première personne à écrire un commentaire sur cet article
  • Classement des meilleures ventes d'Amazon: 98.932 en Sports et Loisirs (Voir les 100 premiers en Sports et Loisirs)
  •  Voulez-vous faire un commentaire sur des images ou nous signaler un prix inférieur ?

Descriptions du produit

avec 2 embouts flottants (de 11.3 mm et 16.3mm) et des surfaces pour clés plates vous pourrez démonter les manivelles à embouts carrés ou à cannelures de type octalink, isis drive, power drive ou power spline

Commentaires en ligne

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Commentaires client les plus utiles sur Amazon.com (beta)

Amazon.com: 4.7 étoiles sur 5 332 commentaires
44 internautes sur 49 ont trouvé ce commentaire utile 
1.0 étoiles sur 5 Actually, I love this precision tool. Naysayers please read carefully. 5 janvier 2015
Par B. E. Sharrow - Publié sur Amazon.com
Achat vérifié
Many purchasers bad mouth this tool and say that it wrecked their bikes. Having read all the negative reviews, I went to Park Tools web site and clicked on their "how to use this tool" tutorial. My impression? Not too informative, especially for an inexperienced person but, at least it showed that the tool was intended for the amateur as well as the professional.
THEN, I considered all the negative consequences I had read and concluded that most of these people were first time users and that they either failed to inspect the tool before using it or expected too much from an inanimate object.
THEREFORE, being informed, I expected problems and proceded cautiously.
Problem #1: The tool "cross threads" and destroys the crank.
Solution#1: I inspected the tool and found it had been surface treated AFTER being machined and the threads were a bit "ragged" but sound. To test this observation, I GENTLY threaded the tool into the crank and sure enough, it "caught." IF I had continued to force the tool, it would most likely, have shaved some of the aluminum alloy into the threads, causing galling, binding, and tearing out of the crank threads and possibly also those of the tool, itself.
THEREFORE, I took the tool to my bench grinder and using a wire brush wheel, cleaned and smoothed the threads until they looked like a quality tool ought to look. Then, because this tool needed to fit all the way into the crank threads, I liberally coated the smoothed threads with molybdenum disulfide paste (moly grease).
NOW, I RETRACTED THE PISTON ALL THE WAY INTO THE RECESS provided for it. Yes, that is in the instructions. And guess what? The tool easily and snuggly seated as far into the crank as the retaining screw that I had removed.
Problem #2: The tool ripped out its own threads and those of the crank, too.
Solution#2a: While I was finishing and polishing the first part of the tool, I did the same to the second part. Now I was sure that the tool was smooth and well lubricated so that all its force would go into doing what it was designed to do, namely press against the shaft and draw the crank outward.
Solution #2b: Read Park Tools' instruction, again, in detail. Look inside the crank cavity and remove any washers, retaining rings or anything else that will get between the end of the shaft (square or splined, solid or hollow - whatever) and the business end of the tool. Then, see whether or not you actually NEED that larger end. If you do, say you have a hollow, splined shaft, then take your tool in hand and carefully remove the thick, larger piston head from its storage location on the unused end of the inner threaded shaft being careful to leave the retaining "o" ring on the shaft. Now, like before, be sure that the piston is fully retracted into the outer housing and carefully place the larger piston head into the recess. If necessary, hold the free piston head in place with a little grease.
Use your head. The tool cannot think but it will do its job if it is properly employed.
If your crank is corroded in place, soak the corrosion in a release agent, say penetrating oil, and give it time to work. If that doesn't work, and you don't need to reuse the crank, try heating just the crank with a torch. Soft alloy expands more than steel and yes, holes get larger when heated. When all else fails, cut the crank with a hacksaw and spread the kerf with a large, sharp screwdriver. It WILL come off!
Don't abuse your crank puller. Moderate torque, on lubricated fine threads will exert a tremendous amount of extractive force. If things don't seem to be going as they should, step back and reconsider the problem. Still nonplussed? Ask for help. A second opinion may save the day.
Finally, replace the large piston face on the storage end of the inner screw. Be sure to engage the rubber "o" ring and oh yes, store the assembled tool in a plastic bag , a pill bottle or whatever will protect it from getting dinged, dirty or displaced. You can toss your wrenches and screw drivers in a tool box but your precision equipment needs careful storage.
Happy biking.
9 internautes sur 9 ont trouvé ce commentaire utile 
5.0 étoiles sur 5 The right tool 9 avril 2013
Par A. Mefford - Publié sur Amazon.com
Achat vérifié
I recently needed to remove the crank from my son's bike. I removed the cap from the crank and was baffled as to how to proceed. After a little internet research I found you need one of these. It will thread into the crank and then allow you to push it off the square post. This tool works with a variety of posts, but mine was the square type. You may want to verify it is designed for your spline design before you purchase. This tool provides two different size pushers unlike its sibling Park tool.
Park Tool Crank Puller for Square Taper Cranks

The other tool does not provide the smaller pusher needed for some small square posts, like mine. I managed to do the job with the other tool but mangled the crank a bit in the process, and it required a massive amount of pressure, as I was pressing the puller into the aluminum of the crank ( I did not know this was happening).

Now I have purchased this one and will be able to do the job correctly without damaging the crank of the next bike. If you are not sure which to buy, buy this one it will do everything the other park tool with and more. And you can use a properly sized wrench for the job instead of being limited to a six inch handle.
5.0 étoiles sur 5 Excellent tool that won't take up room in your bike tool box. 16 août 2016
Par Baby Boomer - Publié sur Amazon.com
Achat vérifié
I bought this to replace my over-25-year-old Lifu crank puller of the same design which I had stripped the threads in after using dozens of times. Being a Park tool which is the unofficial bike shop mechanic's tool, the quality is excellent. I had also bought the Park Tool Crank Puller for Square Taper Cranks which I used only a few times and will probably never use again. The other Park tool has a short, flat handle that does not give much leverage and it hurts my hand -- what was Park thinking? With the compact tool, I can use a variety of wrenches to get more leverage from different style wrenches that do not hurt my hand. This is a better tool, by far, than the one with the built-in handle. This Park Tool Compact Crank Puller is the one to get and it will fit in your personal bike tool box (I've been using a large fishing tackle box which is perfect).
26 internautes sur 27 ont trouvé ce commentaire utile 
5.0 étoiles sur 5 Great tool for the shop or even the tool roll 18 août 2010
Par Raleighphile - Publié sur Amazon.com
Achat vérifié
This is an amazing tool. It's well thought out to be both portable and useful.

You will need to use your own 22mm and 15mm wrenches with this tool as it doesn't have a built-in handle like some of the larger pro-shop crank pullers that take up a LOT of room in a tool box and are not portable if you are out on the road on tour.

The 22mm wrench helps turn in the outside portion of the tool into the crank threads so you probably want to make sure you have it in more than just a couple of threads or you will end up pulling threads out of your crank and ruining it. Make sure you have the inner portion backed out almost all the way so that it doesn't give you the false impression that the tool has bottomed out in the crank when instead it is bottoming out on the bottom bracket and not screwed in all the way. One could probably get away with using a small adjustable wrench on this part because it doesn't take much effort to spin the outer portion into the crank threads as they are usually protected by the end cap and should almost be easy enough to screw in by hand most of the way.

I use my Trixie tool to turn the inner section as its a good 15mm box-end wrench and it's in my everyday tool roll anyhow. Since this tool is light enough to take on tour I have it planned out that I'll use the Trixie to operate this wrench on the 15mm head and an adjustable wrench to screw it into the crank via 22mm head. Once the outer portion is screwed in all the way you don't need to use the 22mm wrench any more and can just spin the inner portion of the tool with the 15mm.

Others have said that the removable rotating ends fall off easily and don't stay on. My tool doesn't have that problem. There is a rubber O-ring or something in there that is holding it on. Perhaps that can rip when they are taken off roughly and then allow them to be loose. I've pulled mine off and swapped the rings a number of times and they have no issues with being too loose or falling off.

Cons:

This tool is a compact portable version and doesn't come with wrenches that are permanently attached and create a TON of weight in your tool roll when touring. It might become necessary to service your bottom bracket or cranks on the road and without this tool you are at the mercy of the LBS (if there IS one near where you are). This tool can be used with your Trixie or any 15mm box wrench (or 15mm pedal wrench in a pinch) and an adjustable wrench that opens up to a paltry 22mm (that's not even 1" to the metric-impaired -1" is about 26mm)

Park tool makes a bench version of this tool so there is no reason to mark this tool down for what it is NOT.
4.0 étoiles sur 5 Very well made but did not work for me. 25 octobre 2016
Par alram0001 - Publié sur Amazon.com
Achat vérifié
I needed this tool to remove the crank of my 1996 ground control, the tool arrived fast since I have prime, the tools seemed to be very well made, I did have to clean the threads with a wire brush since it did not want to screw in properly at first try, and I did not want to cross thread my crank, however I could not remove my crank, I did not want to strip the threads on my crank, I don't think its the tools fault, my bike is old and the crank set has been on it for more than 20 years, I will have to take it to the shop to get them removed.

again the tool seems to be very well made but it did not work for me.
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