How To Remove Press – Fit Bottom Bracket Bearings
After a long time using or frequently cycling, your press-fit bottom bracket bearings will eventually wear out or be broken unexpectedly. For the best experience when cycling, you will need to replace them by a new one.
But, before you can attach a new one in your bicycle, you will need to know how to remove bearings. It will make sure you will take the old bearing out properly and not damage your bike. Besides, you can do it easy by step to step.
Gather the tools
To do this task, you will need some equipment to push the old bearing out. The Allen key or a driver to remove the crank, bracket bearing removal, and a small steel hammer. That will be what you will need to have to detach the press-fit bottom bracket bearing.
The optional thing you will need for this is the protective gloves. It will prevent some hurt can be caused by the edge of the bike components. Also, the grease will not good for your skin; therefore, it is highly recommended to wear the glove.
Remove the crank arms
Before you can remove the bearings, it is obviously that you must take out the cranks. This is when you will need the Allen key to helping you to take it out. Unscrewing in the anti-clockwise direction, press the Allen key down to take the nut or the bolt from the crank arm.
Having already taken one crank arm off, then you can access the left-hand bottom bracket cup. You will need to remove something before turning to the other side and remove the right-hand crank arms. Those components prevent you taking out the other crank, so let bring them out previous to the right-hand crank.
Next, sliding off the spacers carefully, as well remember well the order of the spacers. It is crucial for you to know the side and the other of that thing, you will have to put it back later. You might ruin the spacers if you let it go back in the right order or side.
If you often forget the things like this, it is suggested that you should label the spacer with the number. It will make sure that you will not disassemble them in wrong order. You can also take some picture with your phone, so you can look at the picture to support you while dissembling.
After taking the left-hand crank out, continue to the right-hand side. Sometimes, the crank and the axle will slide out when you have already finished the left cranks. However, if it is not that easy, you will need a mallet to assist you. Tap it lightly to reduce the friction fit and take it out.
One thing you should not forget is to uninstall the chain out. If you have not done this before, ask some friends or search the way to do it on the internet. Do not try to pull out the chain of the bicycle as it might break the chain as well the disk.
Using the bearing remover
After taking off the spacer, you can remove the dust cap and prepare to take the remove the bearing. Installing the bearing remover to the hole of one bearing and push it toward the opposite bearing. You will need a little trick to help you to do it easier.
The head of the remover is often wider than the hole in the bearing. So you can not put it directly to the hole. Try to put the head of the remover at an angle, get one side of the head in first, then straighten up and put the other side in the hole.
After that, you should position the head to let it fit against the inside edges of the bearing. Both sides of the head should be set firmly on the backside of the bottom bracket shell. This will make sure when you push the remover; the impact will balance for both side.
Typically, the bearing will be stuck in the hole, and it will take you a lot of effort to push it out. You should use a small hammer to strike it out. Do not hit the end of the bearing remover too strong; it will damage for your bike and make it work probably.
Instead, you should strike the end of the tool slightly, every time strike, you should check to make sure that the head of the tool is in the central. Do not let the head of the bearing removal move to one side as it will prevent the bearing pop out.
You had better repeat striking the tool for few times rather try to hit it powerfully. Of course, it will not so fast, each time you strike, the bearing will creep out for some millimeter movement. Just continue, it is the only way for you to push the bearing out correctly.
For a while to striking the end of the bearing remover, apparently, the bearing will be moved and fall out. That is half way for you to do, now you just need to move on and do the same thing with the other side. And you the way to do it just similar to the first bearing.
Meanwhile, this should not be challenging as the bearing you have just taken out. Because it will not be as difficult as when you try to put the both side of the tool into the hole. The hole now is larger since you have already removed one bearing.
If you can do exactly as the method as the first one, it will not be so hard for you to push the other off. You just need to set the tool square on the bearing and fit the inside edge of the bearings. Be patient, and then you will take the bearing off.
See! It will not be so tough for you as long as you know how to remove bearings. Now, your bicycles are ready to be attached the new bearings. It will assist you for the better performance as well the speed on the road. At the same time, the new bearings will provide you the fantastic experience when cycling.