Actually the first step is to determine if you really need to remove the crank. Sometimes one can jump to an incorrect conclusion about the source or solution to a problem. It's advisable that you first specify what you hope to accomplish by disassembly.
I’m happy to help further over the phone at https://www.6ya.com/expert/donald_f2ed37026a3ac881
There are a number of different designs of crank and detachable pedals and some that have been forged in one or two pieces and so the procedure will vary depending on the design of yours.
I suggest you search on youtube for a helpful how-to video.
SOURCE: how do I reassemble crank on a GT mountain bike?
Okay!
First you need to know that you have all the parts needed to put it on.
The List:
--Both left and right crankarms (right side has the gears)
--Axle installed into the frame (no? take it to a bike shop... specialty tooling is required to put them on and there is no way to fudge around it with general tools found in most homes)
-- Two nuts or bolts that thread easily into the axle ( check that they do by threading them in by hand)
-- A ratchet handle and thin wall 14mm socket
Method:
Hook the chain onto the smallest gear and slide it onto the axle arm until it stops, give it a light tap with your hand to make sure that it's stuck on, thread on the nut or bolt that fit onto the axle and thread it on until it touches the arm (already on).
Sit the bike upside down, or on a stand so that the crankarm can swing freely in the air. Now take the other arm and put it on with the pedal at the top, facing away from the frame, tap it on with your hand and thread the other nut or bolt on with your free hand.
Grab the ratchet and tighten both nuts with enough force to ensure that they won't come off ( try picking up a 50lb bag of something with one hand as an example of the amount of force needed, that should be enough force to keep them on).
Carefully take it out for a test ride then come back and let us know how you did!
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.
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
SOURCE: How do I remove a crank arm from a Huffy Mountain
You will need to purchase a crank puller. If you only have to do this once you are better off having it repaired in a bike shop unless you like to have tools for everything. They come in various sizes so you will have to tell the dealer which one you need and for what bike. It works like a gear puller. You remove the cap covering the bolt. You remove the bolt or nut holding the crank on and screw the puller into the threads on the crank. You then tighten the bolt that goes through the center of the puller. It puts pressure on the bolt in the center of the crank and forces the crank off. Hope this helps.
231 views
Usually answered in minutes!
Hi Nell , I want to help you with your question, but I need more information from you. Can you please add details in the comment box? Mountain bikes are not all the same. What kind is yours? Give us some names and some numbers.
×