Advertise on Bikeforums.net



User Tag List

Results 1 to 4 of 4
  1. #1
    MUP Pup tromper's Avatar
    Join Date
    Mar 2005
    Location
    Seattleish
    My Bikes
    '91 Trek 750 "Le Phred Vélo"; 197X Nishiki Super 5
    Posts
    142
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Ashtabula Crank won't pull

    Hi folks,

    I have an Ashtabula crank on an ancient Nishiki Super 5 that doesn't quite want to pull.
    I'm mostly inclined to just work around it. Clean it, add some grease & close it, but I was debating fresh bearings as well so it'd be nice to get it apart.
    Anybody have a magic trick for these or am I going to have to pull the drivetrain side cup?
    If I have to pull the cup any suggestions?Ashtabula.jpg

  2. #2
    Andrew R Stewart Andrew R Stewart's Avatar
    Join Date
    Feb 2012
    Location
    Rochester, NY
    My Bikes
    Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Raleigh Pro, Trek Cycle Cross, Mongoose tomac ATB, GT Bravado ATB, JCP Folder
    Posts
    3,090
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Well they got it in at the factory... If you've tried every possible position on the crank to try to remove it from the shell then the next is removing the RH cup. It's easy to hit it from the backside/inside the shell with a drift punch or any long narrow solid shafts/rods. These cups are never really well fitted and pop out quickly after a blow or three. Reassembly is with a clamp to press the cup back in. This can be a threaded rod with spacers/washers to pull on the cups or a couple of pieces of wood and a bench vice or C clamp. It will be awkward with the crank in place but very doable in short order. Andy.

  3. #3
    Mechanic/Tourist
    Join Date
    Apr 2007
    Location
    Syracuse, NY
    My Bikes
    2008 Novara Randonee - love it. Would have more bikes if I had time to ride them all. Previous bikes: 1968 Motobecane Mirage, 1972 Moto Grand Jubilee (my fav), Jackson Rake 16, 1983 C'dale ST500.
    Posts
    4,780
    Mentioned
    5 Post(s)
    Tagged
    0 Thread(s)
    Yes, just pop out the cups. I would not worry terribly about reinstall - not exactly a precision part. You can just take a dead blow hammer or hammer and block of woosd and gradually tap it in without causing problems. In 20 years of working on bikes (plus quite a few more when I was young) I never used a press on an Ashtabula. In the normal situation with the cranks off I put a block of wood accross the cup and then just hit the wood with a dead blow hammer.
    There's no such thing as a routine repair.

    Don't tell me what "should" be - either it is, it isn't, or do something about it.

    If you think I'm being blunt take it as a compliment - if I thought you were too weak to handle the truth or a strong opinion I would not bother.

    Please take the time to post clearly so we can answer quickly. All lowercase and multiple typos makes for a hard read. Thanks!

  4. #4
    MUP Pup tromper's Avatar
    Join Date
    Mar 2005
    Location
    Seattleish
    My Bikes
    '91 Trek 750 "Le Phred Vélo"; 197X Nishiki Super 5
    Posts
    142
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Thanks folks a chunk of dowel, & a rubber mallet got it "Ford Style"

Posting Permissions

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