Join Date: Jul 2008
Location: Pflugerville, TX
Bikes: Early 1990 Trek 950 MTB and Centurian LeMans Road (new to me!)
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Crank replacement question-bolt removal?
I'm a amature bike mechanic-basically, I''m fairly new to biking and I have a 80's Centruion LaMans that I ride. I've been using this bike as my learning pad for repairs as things break or I decide that I want to upgrade them. Most things have been pretty easy so far (rear derailure, handlebars, Etc).
The current crank set is a biopace double with a fairly high tooth count so I've bought a new compact crank to try out, it's square taper also. I did some reading on crank removal and things went pretty well. I took off the dust caps, there was a Nut that I removed, then I used my crank removal tool to get the crank arms off. All that went pretty easily.
Then I put on my new crank arms however I then noticed that the new crank arms had self extracting bolts to install. The bottom bracket still has the bolts attached from the previous crank removal making it impossible to use the new self extracting bolts.
So, did I do the crank removal properly? Where the bolts that were on there previously supposed to come off during my crank removal?
If they were not supposed to come off, is there a easy way to get them off so I can use the self extracting bolts that came with my new crank?
Just to see how the cranks would look, I put the new cranks on and used the old nut to secure them in place. The cranks seem nicely secured and ridable. However, it does not look "nice" with the exposed nut/treads. I could find some dust caps and leave it as is but I just wanted to check with more experiencd mechanics to see if I was doing things correctly.
Thank you for your time and help!