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-   -   Seized bottom bracket cup (https://www.bikeforums.net/bicycle-mechanics/1115033-seized-bottom-bracket-cup.html)

Redfixie909 07-16-17 08:47 PM

Seized bottom bracket cup
 
2 Attachment(s)
I have a seized cup on the non driver side . I have no idea on how to get it out.

maddog34 07-16-17 09:34 PM

well... get that crank arm off first... THEN clean the splines, and use the correct tool to remove it, maybe...

park tool BBT-32.

Redfixie909 07-17-17 01:23 AM

The problem is the crank arm is dangling off it's the cup piece that's stuck . That piece with the treading is stuck

trailangel 07-17-17 01:38 AM

Take the crank arm off

maddog34 07-17-17 02:05 AM


Originally Posted by Redfixie909 (Post 19723994)
The problem is the crank arm is dangling off it's the cup piece that's stuck . That piece with the treading is stuck

remove the crank arm... get the removal tool for the "cup"... lay the bike down so that the stuck "cup" is up... put some PB blaster in the cup... and walk away for a day... i like to add a squirt of penetrant every few hours, too...

that looks like a sealed bearing BB to me... putting the penetrant in, and letting it soak for a day, will free up any rusting that WILL build up between the cup and BB body...

Get the splines cleaned out first, then install the remover i mentioned above... move the cup BOTH ways to help loosen it... be patient, and work the threads to help clean them as you unscrew that cup... it will unscrew counter-clockwise...

once you get it removed... CLEAN ALL THE THREADS... then put a bit of grease on the frame threads, all over the inside of the frame's BB interior, and inside the cup, before reinstalling the new Bottom bracket assy.... anti-seize would be a good choice also, but not everyone has it handy.

and REMEMBER.. the DRIVE side BB threads are REVERSE threads... turn clock-wise to remove.

Redfixie909 07-17-17 06:03 AM

I'll probably attach more pictures to this post . I can't attach the removal tool or anything for that matter because the arm is moving freely from the cup

chorlton 07-17-17 06:42 AM

2 Attachment(s)
.... You need to get the crank arm off before you can use the cup removal tool. You will need a crank removal tool, crank puller, to remove the crank.

Oh... There will be a dust cap on the crank arm. It will either pop off or unscrew. Under that you will find a nut or bolt, 14mm or 15mm. Remove it. As maddog suggests in the case of your cup the same applies to the arm. You will have to lay the bike on its side and squirt some penetrating/release fluid in it and leave things for a day, replenish.

Then you screw the extractor into the thread, make sure you have fully unwound the centre pin. Once it is in place and tightened wind the centre pin back down. Be careful and watch that the outer part of the tool remains seated. If it does not then you are stripping the threads on the crank. You have either bought a cheap crank puller or you need to spend more time with the penetrating fluid.

..

Redfixie909 07-17-17 12:04 PM

2 Attachment(s)
Here's the damage more in depth so you have a better idea of the situation .

Redfixie909 07-17-17 02:30 PM

It's hanging losely by the spindle . There is no other side to grip for me to use the removal tool

trailangel 07-17-17 02:32 PM

Take the crank arm off!!!

So are you just not reading what people are telling you.
Take the crank arm off
Use removal tool to take off the cup. GRIP THE FRAME

chorlton 07-17-17 02:46 PM

2 Attachment(s)

Originally Posted by Redfixie909 (Post 19725437)
It's hanging losely by the spindle . There is no other side to grip for me to use the removal tool

Here is one I found earlier... As mentioned previously you need a different tool, a crank extractor/puller, to get it off.

sweeks 07-17-17 02:48 PM

1 Attachment(s)

Originally Posted by trailangel (Post 19724003)
Take the crank arm off


Originally Posted by trailangel (Post 19725442)
Take the crank arm off!!!

What he said (twice!)^^

Here is what the tool you need looks like; obviously the crank axle must be able to pass through this tool, which is why the crank arm has to come off.
Steve

Redfixie909 07-17-17 03:16 PM


Originally Posted by trailangel (Post 19725442)
Take the crank arm off!!!

So are you just not reading what people are telling you.
Take the crank arm off
Use removal tool to take off the cup. GRIP THE FRAME

The crank arm is the problem ! The spindle is moving around freely I don't have the bracket to attach to it to get it fixed in place to be able to turn the crank removal tool.

Redfixie909 07-17-17 03:18 PM


Originally Posted by sweeks (Post 19725484)
What he said (twice!)^^

Here is what the tool you need looks like; obviously the crank axle must be able to pass through this tool, which is why the crank arm has to come off.
Steve

I didn't explain myself well. The crank arm is the actual issue. The spindle is moving around freely in don't have the brick to put it on to get it to be able to be gripped by the removal tool .

Barabaika 07-17-17 03:28 PM

You can probably cut off the crank arm with a hacksaw diagonally. The crank arm is made of soft aluminum.

It would be nice to see the front of the crank arm. Are the threads for the extractor gone?

You can use a universal puller from Harbor Freight.


sweeks 07-17-17 03:32 PM


Originally Posted by Redfixie909 (Post 19725550)
I didn't explain myself well. The crank arm is the actual issue.

Maybe *I* didn't explain myself well...

1) Get a crank arm removal tool and read the instructions. Seek help if necessary.
2) Screw the crank arm removal tool into the crank arm. Start this process by hand to prevent cross-threading your crank, then screw it in further with a wrench. There is no "brick" needed. Seek help if necessary.
3) Following the instructions, turn the bolt on the crank arm removal tool to press the crank arm off the bottom bracket spindle (aka "crank axle"). You will need to hold the crank arm while you do this. There is no "brick" needed. Seek help if necessary.

4) Get the bottom bracket removal tool and read the instructions. Seek help if necessary.
5) Following the instructions, insert the tool into the internal splines of the bottom bracket. Attach a long wrench and apply force. On the "Non-Drive Side" (the one you showed), you will turn *counter-clock-wise* (as you face the frame). Seek help if needed.
6) On the "Drive Side", repeat the previous step, remembering to turn the wrench *clock-wise* (as you face the frame. Seek help if needed.

That should pretty well cover it. Be sure to post images of your broken crank axle. :D
Steve

EDIT: What Barabaika said^^. A side view of the crank would be helpful. If the crank is broken, hold the remaining piece in a vise-grip. No bricks are necessary at any point.

maddog34 07-17-17 03:40 PM

and there is no BRACKET involved... the crank remover tool screws into the the crank arm, using the threads that also keep the dust cover on the center of the crank arm...

at this point, it is obvious that you need to take the bike to a bike shop, and have THEM remove the arm.

chorlton 07-17-17 03:41 PM


Originally Posted by Redfixie909 (Post 19725550)
I didn't explain myself well. The crank arm is the actual issue. The spindle is moving around freely in don't have the brick to put it on to get it to be able to be gripped by the removal tool .

Uhm-Kay... Looking back at your pictures it would appear that there has been some damage to the face of the crank that is on the bottom bracket side which might suggest someone else has already stripped the crank threads for you and used some other means to get the arm off in the past. I am assuming you have both tools that have been mentioned previously but when you try to use the crank extractor it is not biting the thread in the crank because there is no thread... If that is the case you will have to be more brutal... I assume you have the right sized spanners.

Redfixie909 07-17-17 04:12 PM


Originally Posted by chorlton (Post 19725620)
Uhm-Kay... Looking back at your pictures it would appear that there has been some damage to the face of the crank that is on the bottom bracket side which might suggest someone else has already stripped the crank threads for you and used some other means to get the arm off in the past. I am assuming you have both tools that have been mentioned previously but when you try to use the crank extractor it is not biting the thread in the crank because there is no thread... If that is the case you will have to be more brutal... I assume you have the right sized spanners.

I got the crank and chain ring on the driver side off. The problem is the spindle is now moving freely and loose in the bracket . The crank arm is still attached and blocking me from applying any tools. I need to separate the spindle from the arm. That is my main issue that the other crank arm isn't present to give it resistance to use the crank removal tool

3alarmer 07-17-17 04:13 PM

https://upload.wikimedia.org/wikiped...gleGrinder.jpg

trailangel 07-17-17 04:24 PM

Use the crank arm you are taking off for leverage.

sweeks 07-17-17 04:27 PM


Originally Posted by Redfixie909 (Post 19725699)
That is my main issue that the other crank arm isn't present to give it resistance to use the crank removal tool

You don't need the drive-side crank. And try hard not to resort to violence! ^^ :D
Steve

chorlton 07-17-17 04:33 PM


Originally Posted by Redfixie909 (Post 19725699)
I got the crank and chain ring on the driver side off. The problem is the spindle is now moving freely and loose in the bracket . The crank arm is still attached and blocking me from applying any tools. I need to separate the spindle from the arm. That is my main issue that the other crank arm isn't present to give it resistance to use the crank removal tool

OK... so you used a crank extractor to remove the drive side crank arm. Same method applies to the non-drive side but this time you use the non-drive side arm to apply the resistance... the same as you did with the drive side one? You hold the crank arm steady with one hand and use your spanner to operate the tool with your other hand.

Maybe you are just playing games or you do not have the required number of hands/arms. That's cool. Try using your foot to apply the resistance.

Redfixie909 07-17-17 05:24 PM

1 Attachment(s)
This is the concern . The other arm isn't present . Don't I need it to create resistance for the removal tool to take off the other arm??

Redfixie909 07-17-17 05:26 PM


Originally Posted by chorlton (Post 19725750)
OK... so you used a crank extractor to remove the drive side crank arm. Same method applies to the non-drive side but this time you use the non-drive side arm to apply the resistance... the same as you did with the drive side one? You hold the crank arm steady with one hand and use your spanner to operate the tool with your other hand.

Maybe you are just playing games or you do not have the required number of hands/arms. That's cool. Try using your foot to apply the resistance.

I'm not playing games it's just hard to explain my dilemma. Look at the picture I just posted so you have a better idea of what I'm talking about.


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