Pressfit BB removal... bearings out but cups stuck in frame!

Discuss light weight issues concerning road bikes & parts.
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aerozy
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Joined: Thu Sep 04, 2008 9:48 am
Location: Mountains, Portugal

by aerozy

Hey folks! I need some WW advice!

My pressfit bottom bracket has been squeaking like hell lately so finally got round to replacing them.

I used a parktool BBT-90.3 when removing the BB cups. After 30mins of hammering none of the cups seem to budge. Eventually the bearings popped out but the actual cup (casing?) is still in the frame! I proceeded with the other side and same thing.

So now how on earth can I get the casings out!? I cant seem to find anyone on google with a similar experience! The parktool seems worthless now for the purpose.

HELP! And please dont tell me a drill is the only option out :oops:
Sunny cycling holidays in Portugal @ Cherry Cottage Vintage B&B

Valbrona
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Location: United Kingdom of Great Britain and Northern Ireland

by Valbrona


by Weenie


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corky
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Location: Expat in Washington DC

by corky

press fit in, push out

aerozy
Posts: 772
Joined: Thu Sep 04, 2008 9:48 am
Location: Mountains, Portugal

by aerozy

^ Already have one of those. Point was that the bearings came out which is where the tool applies its pressure but the rest (cups) stayed in.

Finally managed to release them though. How so?

1) Added some additional pressure on the parktool lips by spreading them out as much as possible.
2) Wedged them between the grooves of the cups. This aint easy as the cups have that inner cilinder thats pretty flushed with the cups.
3) Bang Bang and out they came

Its a pretty violent process. Hammering your bike to death does not come natural! :mrgreen: Ok all good! Thanks!
Sunny cycling holidays in Portugal @ Cherry Cottage Vintage B&B

drmutley
Posts: 344
Joined: Fri Feb 11, 2011 4:23 am

by drmutley

I've had similar experience, but once I supported the BB shell appropriately and got over the fear of hammering the F%#k out of the frame, they came out easily...

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ms6073
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Joined: Fri Jul 23, 2004 8:24 pm
Location: Houston, Texas

by ms6073

aerozy wrote:Finally managed to release them though. How so?
1) Added some additional pressure on the parktool lips by spreading them out as much as possible.
Had the same issue removing Cannondale's alloy PF30 bearing cups that were installed with Loctite retaining fluid and pretty much did the same thing to the Park tool which really mangles the back side of the cups. Until Park, Pedro's or other tool company makes a better tool, seems like PF30 bearing cups are not likely to be reused.
Michael - The Anaerobic Threshold is neither...

Valbrona
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Joined: Fri Oct 28, 2011 3:25 am
Location: United Kingdom of Great Britain and Northern Ireland

by Valbrona

aerozy wrote:^ Already have one of those. Point was that the bearings came out which is where the tool applies its pressure but the rest (cups) stayed in.


You said you had Park 90.3 - that removes the bearings. A Park RT1 or similar 1 1/8" head cup remover is for removal of the cups - the inside diameter of a PF30 bottom bracket is the same/similar to a head tube that takes an 1 1/8" steerer.

aerozy
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Joined: Thu Sep 04, 2008 9:48 am
Location: Mountains, Portugal

by aerozy

Sorry I hadnt realized they were different. That would have sorted me out! I'll keep this in mind next time if It happens again. Cheers :beerchug:
Sunny cycling holidays in Portugal @ Cherry Cottage Vintage B&B

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corky
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by corky

wooden dowel?

by Weenie


Phill P
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by Phill P

What sort of PF BB was it? PF30 or shimano press fit? Did you have Al or plastic cups?

Plastic cups make less noise. When you have bearings straight onto the crank axle like BB30, or straight into an Al cup you have far more chance of creaking.

Seems to be a big problem on BB30/PF30 where the bearing sits right on the axle. Is caused by a small tolerance mismatch between the inner race and the axle OD allowing a small amount of movement, and then that noise is amplified in the frame.
Fix it with some mild loctite

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