Stuck Hollowtech Bottom Bracket Cup
- VeloGiro
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Stuck Hollowtech Bottom Bracket Cup
Postby VeloGiro » Sat Jun 30, 2018 8:46 pm
Thinking its cut it off but not sure if that's potentially disastrous??? Any advice welcomed!
- Duck!
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Re: Stuck Hollowtech Bottom Bracket Cup
Postby Duck! » Sat Jun 30, 2018 9:45 pm
*Usually* a length of pipe over the spanner to make an extension does the trick, but if you've properly munted the splines then you may have to destroy the cup to extract it.
- OnTrackZeD
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Re: Stuck Hollowtech Bottom Bracket Cup
Postby OnTrackZeD » Sun Jul 01, 2018 8:21 am
Soak it with something like WD40 and with rounded lugs its ruined already so you can use a pipe wrench [monkey wrench] to get it off. Sharp blow with a hammer may crack it loose, with care obviously.VeloGiro wrote: Its pretty much fused on the frame and attempts to remove it with the removal tool has rounded off the lugs.
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Re: Stuck Hollowtech Bottom Bracket Cup
Postby LG » Sun Jul 01, 2018 8:24 am
- VeloGiro
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Re: Stuck Hollowtech Bottom Bracket Cup
Postby VeloGiro » Sun Jul 01, 2018 9:08 am
Thanks Duck, LG and OnTrack for your suggestions...yep i was turning the right way its just that the thing is completely fused - I'll have a crack at soaking and try the Stillsons...Duck! wrote:Silly question maybe, but were you attempting to undo it the right way? Left side is a normal right thread (anti-clockwise to loosen), regardless of whether it's English or Italian thread.
*Usually* a length of pipe over the spanner to make an extension does the trick, but if you've properly munted the splines then you may have to destroy the cup to extract it.
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Re: Stuck Hollowtech Bottom Bracket Cup
Postby Ivanerrol » Sun Jul 01, 2018 9:00 pm
https://www.cyclingdeal.com.au/buy/shim ... e/SC-175GA
I have used a breaker bar attached to the tool to get stuck B.B.'s off.
Use a torque wrench to set the tension on the new B.B. cups.
- Duck!
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Re: Stuck Hollowtech Bottom Bracket Cup
Postby Duck! » Mon Jul 02, 2018 12:55 am
Not really that critical with BBs - just do them up effing tight. It's more important to grease the threads so they don't get stuck again.Ivanerrol wrote: Use a torque wrench to set the tension on the new B.B. cups.
- 10speedsemiracer
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Re: Stuck Hollowtech Bottom Bracket Cup
Postby 10speedsemiracer » Mon Jul 02, 2018 1:53 am
- Ancientflatulence
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Re: Stuck Hollowtech Bottom Bracket Cup
Postby Ancientflatulence » Mon Jul 02, 2018 8:25 am
http://www.loctite.com.au/lubrication-a ... e-4096.htm
- Warin
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Re: Stuck Hollowtech Bottom Bracket Cup
Postby Warin » Mon Jul 02, 2018 10:01 am
Cut the bearing into bits and remove it in those bits.. better than trying to force the threads and destroying the frames thread.
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Re: Stuck Hollowtech Bottom Bracket Cup
Postby Ivanerrol » Mon Jul 02, 2018 10:55 am
I use high temp auto wheel bearing grease on the threads - stops corrosion.
A new Shimano Hollowtech II B.B. comes with an installation tool in the box.
This tool fits into the Hollowtech I install tool.
Note that the Hollowtech I tool has a spline for winding in the plastic cup for the left had crank arm. Used to tighten in the crank arms without overtightening the BB bearings.
- Duck!
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Re: Stuck Hollowtech Bottom Bracket Cup
Postby Duck! » Mon Jul 02, 2018 2:14 pm
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Re: Stuck Hollowtech Bottom Bracket Cup
Postby Ivanerrol » Mon Jul 02, 2018 3:03 pm
Shimano Hollowtech II Crankset Crank Bottom Bracket Tool
My confusion regarding Hollowtech I and II derives from the above two bottom brackets - Both are ........ hollow.
One has a larger mounting hub diameter and different spline than the other. I assumed that the smaller diameter BB was a progression from the first hence version 'I' to version "II'.
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Re: Stuck Hollowtech Bottom Bracket Cup
Postby mikgit » Mon Jul 02, 2018 7:04 pm
As Duck said, hollowtech is the crank, not the bottom bracket, named because the cranks are "hollow" in the crankarm. The bottom baracket is jsut called hollowtech becahoes its the one that goes with the crank. Hollowtech 1 cranks had the octalink bottom bracket, hollowtech 2 cranks are 2 piece and use these external bottom bracketsIvanerrol wrote:Sorry for the confusion - According to Cycling Deal the tool is listed asShimano Hollowtech II Crankset Crank Bottom Bracket Tool
My confusion regarding Hollowtech I and II derives from the above two bottom brackets - Both are ........ hollow.
One has a larger mounting hub diameter and different spline than the other. I assumed that the smaller diameter BB was a progression from the first hence version 'I' to version "II'.
I had a frame where someone had used some sort of tape or something in there (M950 BB) and it so wedge in htere and the removal bits got destroyed, had to cut it out, wasn't a fun time, but got the job done.
- VeloGiro
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Re: Stuck Hollowtech Bottom Bracket Cup
Postby VeloGiro » Tue Jul 03, 2018 7:11 pm
Good to know that hollowtech is the crank not the BB...my bad re nomenclature! Makes sense really as i reckon i can recall hollowtech crank-set with square BB taper...
I'll let you know how i get on...
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Re: Stuck Hollowtech Bottom Bracket Cup
Postby Duck! » Tue Jul 03, 2018 8:06 pm
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Re: Stuck Hollowtech Bottom Bracket Cup
Postby Cyclophiliac » Wed Jul 04, 2018 8:20 am
Have you tried using the BB removal tool in combination with a rubber mallet? That always works well enough for me. I don't know how much your BB is fused to the frame, but this approach might be worth a try.VeloGiro wrote:Thanks all...the Stillsons, Vice-grip and the hacksaw are at the ready!
Good to know that hollowtech is the crank not the BB...my bad re nomenclature! Makes sense really as i reckon i can recall hollowtech crank-set with square BB taper...
I'll let you know how i get on...
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Re: Stuck Hollowtech Bottom Bracket Cup
Postby DavidS » Wed Jul 04, 2018 9:54 pm
DS
- VeloGiro
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Re: Stuck Hollowtech Bottom Bracket Cup
Postby VeloGiro » Sat Jul 07, 2018 8:40 am
Thanks all...
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