Advertise on Bikeforums.net



User Tag List

Results 1 to 9 of 9
  1. #1
    Junior Member
    Join Date
    Aug 2004
    Posts
    7
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I have been unable to service my 1972 Peugeot UO-8 bottom bracket because I can't remove the retaining pins holding the cranks. I tried to drive out the pin but it was distorting and might have even mushroomed, compounding the problem. Does anyone have any suggestions ? Will I need wedges or pullers to get the crank arms off ? How many ball bearings are supposed to be on each side ?
    Last edited by dustys; 11-15-04 at 03:08 PM. Reason: one more question

  2. #2
    Senior Member
    Join Date
    Sep 2001
    Location
    Montreal
    My Bikes
    Peugeot Hybrid, Minelli Hybrid
    Posts
    6,521
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    When pounding those pins you need solid support on the back side of the crank, or all the force will go directly into the BB bearings. You should put an old nut on the pin and hammer that rather than the end of the pin, but it may be too late now. Try some penetrating oil. When installing new pins, hammer it in; dont use the nut to pull it in. Maybe you will just have to let the LBS take it apart. I suggest you get square taper spindle and matching cranks, rather than trying to put this lot together again.

  3. #3
    Cars are evil mynameisnotdrew's Avatar
    Join Date
    Sep 2004
    Location
    Philly
    Posts
    112
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    word. cottered cranks suck big booty. oldie but baddie.

  4. #4
    Recovering Retro-grouch CRUM's Avatar
    Join Date
    Dec 2003
    Location
    Some call it God's country. I call it Acton, Maine
    My Bikes
    Too Many - 7 or 8
    Posts
    5,002
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Unless you are intent on keeping the original junk on this bike, take a saws all and cut the cranks off, remove the old Bottom Bracket and reinstall with something newer, like the set-up suggested in the previous post by AndrewP. If you want to save the old cranks and Bottom Bracket, get a hacksaw blade and cut the cotter out of the crank arms. Remove the old Bottom Bracket, replace the old bearings and reinstall. Using the hacksaw blade will test your patience big time, but it can be done.
    Keep it 'tween the ditches

    My Blog - Lost in the Bo Zone

  5. #5
    Senior Member miamijim's Avatar
    Join Date
    Aug 2003
    Location
    Tampa, Florida
    Posts
    11,606
    Mentioned
    9 Post(s)
    Tagged
    1 Thread(s)
    They make tools to press the cotters out. You local LBS should do it for a few bucks. The same tool re-installs the cotters.


    If a local LBS isnt accesable you can:

    1. Break of the threaded part.
    2. Using a center punch.
    3. Hit it real hard with a big ole hammer.

    This is killer on the BB but what are you going to do?
    WWW.CYCLESPEUGEOT.COM 2005 Pinarello Dogma; 1991 Paramount PDG 70 Mtb; 1976? AD Vent Noir; 1989 LeMond Maillot Juane F&F; 1993? Basso GAP F&F; 1989 Terry Symmetry; 2003 Trek 4700 Mtb; 1983 Vitus 979

  6. #6
    Senior Member
    Join Date
    Aug 2002
    Location
    Juneau, AK
    Posts
    201
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    We have a pair of UO-8s and moved away from the cottered cranks they came with more than 25 years ago (a few years after we bought them). That would be my recommendation. Look for a cotterless alternative. I don't think you'll regret it.

    Otherwise, challenge a bike shop with this problem.

    Mike

  7. #7
    Glutton for Punishment
    Join Date
    Aug 2004
    Location
    San Leandro, CA
    Posts
    2,896
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Last time I ran into a stuck cotter I ended up drilling it out.

  8. #8
    Senior Member
    Join Date
    Oct 2002
    Location
    Laguna Hills, OC, California
    Posts
    258
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I had success drilling broken cotters out when I could not punch the cotter pins out (must be very careful doing so with some backing of the crank and with partially inserted screw, reinforcing the pin so youo don't destroy hte thread). If the pin's thread is already damaged, as you suggest, drilling the pin out works. The pin is made of soft steel, while the crank is very hard. Even partial drilling will release enough of the friction that the pins punches out very easily. I've done it many times successfully. Of course you than have to get either new cotter pin or use some more modern crank and axle arrangement. The cotter pin arrangements are usually very heavy and hard to work on witout the proper tool.

  9. #9
    Junior Member
    Join Date
    Aug 2004
    Posts
    7
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Many thanks for all of the responses. When I get ready I am sure that one of those suggestions will do the trick.


    The Peugeot is going to be refurbished on an as needed basis because there is a new hybrid bike in my future. Less stress to the shoulders. Trek? Giant? Specialized? One of LBSs will get the cycle of my dreams in stock soon. Christmas is coming.
    Last edited by dustys; 11-16-04 at 06:50 PM. Reason: add smiles

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •