Centurion Bottom Bracket help
08-24-07 | 01:05 AM
#1
Thread Starter
This town needs an enema.
Joined: Jul 2005
Posts: 794
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From: Huntington Beach, Ca.
Bikes: Bridgestone 400
Centurion Bottom Bracket help
I am removing and replacing the BB on my Centurion Dave Scott Ironman. Removing the crank arms and the right side of the BB was fairly straight forward but now I have hit a wall. The left side uses a 32mm wrench but it seems to be stuck tight. Before I really start wrenching on this thing I want consult with you all and get some ideas on what I should be doing. Is it reverse threaded?
The BB has a name on it but the name has been scratched off. It still has "Made in Japan" on it and says "1.75 x 24". What does this translate to in terms of what size BB I should buy?
The BB has a name on it but the name has been scratched off. It still has "Made in Japan" on it and says "1.75 x 24". What does this translate to in terms of what size BB I should buy?
08-24-07 | 10:34 AM
#2
Senior Member
Joined: Jul 2005
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Park tool has a good section on how to remove the BB.
https://www.parktool.com/repair/readhowto.asp?id=93
Removing them without the proper tools can be done but you risk damaging things, and creating a really labor intensive repair. If you seriously mess up you could even be buying a new frame. Hopefully you have a friend with the right tools who will lone you them. Other wise if things start to go sour give up and buy the tools early.
Also use lots of liquid wrench. If you can let it soak for several days. Save lots and lots of trouble.
https://www.parktool.com/repair/readhowto.asp?id=93
Removing them without the proper tools can be done but you risk damaging things, and creating a really labor intensive repair. If you seriously mess up you could even be buying a new frame. Hopefully you have a friend with the right tools who will lone you them. Other wise if things start to go sour give up and buy the tools early.
Also use lots of liquid wrench. If you can let it soak for several days. Save lots and lots of trouble.
08-24-07 | 10:38 AM
#3
seņor member
Joined: Jun 2006
Posts: 1,157
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From: yay area
Bikes: Malvern Path Racer, Schwinn LeTour, Follis, Bridgestone 400 (RIP), concord 2sp
08-24-07 | 01:46 PM
#4
Thread Starter
This town needs an enema.
Joined: Jul 2005
Posts: 794
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From: Huntington Beach, Ca.
Bikes: Bridgestone 400
Sorry. I wrote that post while looking at the frame...and it was sitting upside down. I have a thin 32mm wrench that is specifically meant for use with bike repairs, but I don't know if it is mean specfically for the bottom bracket.
08-24-07 | 02:28 PM
#5
feros ferio
Joined: Jul 2000
Posts: 22,397
Likes: 1,864
From: www.ci.encinitas.ca.us
Bikes: 1959 Capo Modell Campagnolo; 1960 Capo Sieger (2); 1962 Carlton Franco Suisse; 1970 Peugeot UO-8; 1982 Bianchi Campione d'Italia; 1988 Schwinn Project KOM-10;
Don't forget the drive side cup is left-hand threaded, i.e., clockwise to remove.
__________________
"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
08-24-07 | 08:06 PM
#6
Senior Member
Joined: Jul 2006
Posts: 394
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From: St. Louis
