SP-20 Taper pins in ink system lever bar

I’m in the process of putting back together a heavily desconstructed SP-20 #29569. I suspect (pictured top) these are taper pins that connect through the rod (picturesed 2nd) that raises and lowers the ink system. The pins are pretty stuck in place, so before I put a ton effort into trying to loose them, I just want to confirm whether I’m accurate in my assessment. Can anyone confirm my suspicions?

6 thoughts on “SP-20 Taper pins in ink system lever bar

  1. Jess Snow - August 21, 2021

    Freezing method worked! Taper pins knocked out quite easily after a week plus of being in the freezer. I’ll probably replace though, they look a little beat up.

  2. Jess Snow - August 2, 2021

    Hi Ernst! I’m attempting a freezing method that a friend shared with me that was really effective with another taper pin removal. Will report back how well that works. The lever bar isn’t attached to the press so angle isn’t an issue in this case. I’m able to remove the part. Also, two of my “good” hardware stores, last time I checked, did have a whole slew of new taper pins in a variety of sizes. I’ll try and preserve mine, but if not I think I have a back up plan.

  3. Paul Moxon, Moderator - August 2, 2021

    I agree, Ernst, that new taper pins are ideal. However, one may not find any at their “good” hardware store. It’s been my experience that restocking doesn’t happen as frequently these days. And reusing taper pins is something I’ve had to do on-site.

    The taper pins in the SP roller arms (in Jess’s photo) are difficult to remove because of the angle of the arms on the lift rod.

  4. Ernst Schaefer - August 2, 2021

    jess, you want to use new taper pins, a good hardware store will carry them for one dollar apiece. take the part they are stuck in now with you and test for the size. the new ones should go in easy about 3/4 of the length from the right side. to get them out you could also put the pin in a vice and try to turn the round part. if you tap them out you can easily mushroom the end with your pin driver, which makes it even harder to remove.

  5. Jess Snow - August 1, 2021

    Thank you Paul. I proceed confidently!

  6. Paul Moxon, Moderator - August 1, 2021

    Yess, Jess. You’re still on the right track. Those can be a bugger to tap out. File any burrs and lightly oil to ease reinsertion.

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