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Question about changing a bottom bracket.....(12 posts)

Question about changing a bottom bracket.....BrianU
Oct 26, 2003 5:22 PM
I have a 2001 Lemond Buenos Aires that is in need of a new BB. This is my first bike with a splined crank and I was hoping to gain some knowledge before I go spending any money.

- I am pretty sure the BB tool I have used on square tapered BBs will work on Shimano's splined BBs. Could someone verify this for me?

- Will I need a lockring wrench?

- Will I need to buy a crankarm puller specifically for splined crankarms or is there a way to make my square tapered crankarm puller work?

- Are the various models of Shimano's BBs interchangable? Can I replace my 105 BB with an Ultegra BB and just how much better is an Ultegra BB than a 105?

Any information will be greatly appreciated.
Just unscrew the allen bolt.the bull
Oct 26, 2003 5:50 PM
The puller is "built" into the crank arm.It is the treaded washer that screws in the crank itself.As the bolt is loosened the head forces aginst this washer and will push the crank off.
I am not sure about 105 being "better" or worse.
I would just go for the Ultegra BB.
I think it is lighter and the bearings are better.
Wait a minute!the bull
Oct 26, 2003 5:54 PM
105 was different back then.
I think it was a tappered.
Ignote my post it is for Ultegra.
I misread you post.
I am an Idiot!
Never mind.the bull
Oct 26, 2003 6:10 PM
I was right the first time.
But I am still an Idiot. :)
Never mind.BrianU
Oct 26, 2003 6:48 PM
The bike has 105 cranks and they do not have the self extracting bolts. It does require a puller.

If the axle is not hollow.the bull
Oct 27, 2003 3:56 AM
Then use the puller.
The self extracting cranks were made for the hollow bottom brackets.
Geez.......Rusty Coggs
Oct 27, 2003 6:17 AM
Get the terminology right. Even some square taper spindles are hollow. Self extractors have even been made for square taper,solid and hollow spindles. 105 has had the splined BB spindle since 1998. 105, thru the 2003 model has not had self extractors.
Rusty is correct,TJeanloz
Oct 27, 2003 8:59 AM
105 has the same BB spindle design as Ultegra, but does NOT come with self-extracting crankbolts. You could buy some that would work, but they did not come standard on 105.

As for which crank puller you need, if you have a newer version of the Park tool, it will work fine - if you have the original version, you will need to use a small coin (either a dime or penny) to provide a surface to push against.
re: Question about changing a bottom bracket.....TFerguson
Oct 27, 2003 4:35 AM
Standard Shimano BB tool wil work (ie. Park BBT-2).

No lockring.

Std. Shimano puller works. As above, if Ultegra or higher, no tool needed.

All the road Octalink BBs are interchangable. Be aware, double and triple have different spindle lengths. No experience with the 105 BB. Ultegra are great.

I think that everybody's answer is wrong.Spoke Wrench
Oct 27, 2003 8:43 AM
The early 105 splined cranksets did not have the self sxtracting ring so you will need a crank arm puller to remove the arm.

Unfortunately, the older Park crank puller (CCP-2 with a blue handle) won't work because it's diameter is too small and it will just protrude into the hollow bottom bracket spindle.

The preferred Park crank arm extractor is CCP-4 and has a black handle. Other alternatives include a Shimano extension (TL-FC15) that looks like a little top hat. A dime is just a teence too big in diameter to fit into the space that you have to fill. You might be able to find a nut or something that's the right size to work with an extractor that is designed for square spindle bottom brackets.
BB tool...Triphop
Oct 27, 2003 9:57 AM
The Park BBT-2 is the right tool, but it depends on how old the tool is. The first BB tool I had did not work on the splined was not hollowed out enough to fit over the spindle, so I had to buy a new one. Just another expense with the splined system.
Thanks for all the information.BrianU
Oct 27, 2003 8:19 PM
Tonight I went to a LBS and bought an Ultegra BB and a Park crankarm puller for Shimano's splined BBs. Like Spoke Wrench pointed out, it is CCP-4, the one with the black handle. I tried to find something in my garage that would allow me to utilize my old puller, but could not find anything suitable. The new crankarm puller worked as advertized, but I then ended up with the same situation that Triphop mentioned. My BB tool will not seat far enough over the spindle. So I guess I will put my crankarms back onto the old BB and hope it holds out until I can get back to the LBS and get a new BB tool.