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#4520118 - 09/19/17 09:13 AM Replacing Shimano BB-5500 bottom bracket.
mrsilv04 Offline


Registered: 12/08/06
Posts: 8269
Loc: Illinois
After nearly 4,000 miles with me, and who knows how many miles with the original owner, it appears to be time to replace the Shimano BB-5500 bottom bracket on my Specialized Allez Elite 9-speed.

I've never done this before. From the picture (attached), it looks as if either the special 8 tooth socket can be used to remove the ring from the "outside" or the 20 tooth socket can be used to remove it from the "inside". Am I interpreting this correctly?

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2004 Silverado - on its 3rd Jasper engine in less than one year.

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#4520125 - 09/19/17 09:23 AM Re: Replacing Shimano BB-5500 bottom bracket. [Re: mrsilv04]
knerml Offline


Registered: 04/05/05
Posts: 479
Loc: NE Ohio
Yes there is a special tool, and it removes clockwise.
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2015 Hyundai Elantra Sport 2.0 GDI Mobil 1 5W20 & OEM/Mann W811/80 Filter
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#4520126 - 09/19/17 09:24 AM Re: Replacing Shimano BB-5500 bottom bracket. [Re: mrsilv04]
Phishin Offline


Registered: 05/01/12
Posts: 2428
Loc: Indiana
When it comes to BB's in my son's race bike, I just leave it to the pro's. I have several "go to" guys with decades of experience and knowledge.
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#4520138 - 09/19/17 09:34 AM Re: Replacing Shimano BB-5500 bottom bracket. [Re: mrsilv04]
Reddy45 Offline


Registered: 08/15/08
Posts: 2968
Loc: USA
With the right tool, it's an easy job as long as the bike hasn't been abused or unmaintained.

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#4520146 - 09/19/17 09:42 AM Re: Replacing Shimano BB-5500 bottom bracket. [Re: mrsilv04]
IndyIan Offline


Registered: 09/23/08
Posts: 9092
Loc: Ontario, Canada
On my old mtb's I'd try a few whacks with a screw driver and hammer to spin off the lock nut. Put the frame with the bb resting on top of the workbench so you're not stressing the frame with hammer blows atleast.
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#4520163 - 09/19/17 10:04 AM Re: Replacing Shimano BB-5500 bottom bracket. [Re: mrsilv04]
Taildragger Offline


Registered: 10/17/10
Posts: 437
Loc: SW Florida
Local bike shop should have the proper tools available for purchase or they could do the install for ya. Remember, the left side is reverse threaded.
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#4520190 - 09/19/17 10:52 AM Re: Replacing Shimano BB-5500 bottom bracket. [Re: mrsilv04]
skyactiv Offline


Registered: 03/02/13
Posts: 4395
Loc: The Midwest
If you have a Performance Bike brick & morter near you, they sell tos the cheapest.
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#4520307 - 09/19/17 01:25 PM Re: Replacing Shimano BB-5500 bottom bracket. [Re: IndyIan]
buck91 Offline


Registered: 04/17/12
Posts: 2449
Loc: West Michigan
Originally Posted By: IndyIan
On my old mtb's I'd try a few whacks with a screw driver and hammer to spin off the lock nut. Put the frame with the bb resting on top of the workbench so you're not stressing the frame with hammer blows atleast.


No... just no. Unless your talking about a old, low end basic steel frame.
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#4520320 - 09/19/17 01:37 PM Re: Replacing Shimano BB-5500 bottom bracket. [Re: mrsilv04]
nthach Offline


Registered: 01/02/04
Posts: 3895
Loc: California
Park Tool makes a driver to R&R those from a BB shell, the standard Shimano-type tool will work. The toothed part is the "adapter" for the drive(chain ring) side in most cases but pay attention, you don't want to cross-thread these. In any case, apply some copper-based anti-seize to the BB shell and the BB threads when installing the new one. Install the adapter first, and then the BB.

http://www.parktool.com/product/bottom-bracket-tool-bbt-22

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#4520354 - 09/19/17 02:12 PM Re: Replacing Shimano BB-5500 bottom bracket. [Re: buck91]
IndyIan Offline


Registered: 09/23/08
Posts: 9092
Loc: Ontario, Canada
Originally Posted By: buck91
Originally Posted By: IndyIan
On my old mtb's I'd try a few whacks with a screw driver and hammer to spin off the lock nut. Put the frame with the bb resting on top of the workbench so you're not stressing the frame with hammer blows atleast.


No... just no. Unless your talking about a old, low end basic steel frame.

Well, I've got an old Kona Stuff (35lb Al hardtail)so it's not fragile, but I agree not every bike will tolerate working on it like old farm equipment...
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07 Focus ZXW, 5spd manual, 206km M1 5W30
18 Outback 2.5 CVT 5km FF

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#4526616 - 09/26/17 10:57 AM Re: Replacing Shimano BB-5500 bottom bracket. [Re: mrsilv04]
zzyzzx Offline


Registered: 05/18/12
Posts: 4369
Loc: Baltimore, Maryland, USA
I lot of stuff Shimano makes requires a special tool. Often a better quality aftermarket tool is available. I've even bought tools from this place:
http://www.bitul.pl/

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