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  • Robot Coupe CL50 Shaft pin

     fixbear updated 6 days, 7 hours ago 3 Members · 3 Posts
  • Bubbahead

    Member
    May 1, 2021 at 6:05 pm

    HI,

    I have a CL50 Robot Coupe. The master shaft pin that slides in the shaft broke off on either side leaving the rest of the pin stuck in the shaft. I tried hammering it out with screw and hammer but looks like its seized inside the shaft. Any input on best way to get this out to install new pin?

    https://www.partstown.ca/robot-coupe/rob110308s ( pin)

    https://www.partstown.ca/robot-coupe/rob118373 ( shaft with pin)

  • ectofix

    Member
    May 2, 2021 at 1:31 am

    <div> I tried hammering it out with screw and hammer but looks like its seized inside the shaft.</div>

    <div>

    A screw? REALLY?! A SCREW is NOT a proper pin punch tool. DON’T DO THAT!

    Get you a quality set of pin punches. Use the largest size punch that will j-u-s-t fit inside the hole your broken pin is in. Cradle the shaft on a metal base such as a close brass nipple with the hole that the pin is in centered over then opening of the nipple. The nipple itself should be set upon a THICK metal table or concrete (I’ve used parking curbs on occasion).

    All this is so you have a solid, immovable platform, a place for the pin to push through into…and an anvil under the shaft that won’t harm the shaft.

    THEN, use a decent sledge hammer to pound away at the pin punch.

    Don’t forget to wear some safety goggles while doing all of this.

    Here are tools similar to what I own to accomplish such a task:

    Sledge Hammer

    Pin Punch set

    </div>

  • fixbear

    Member
    May 2, 2021 at 1:54 pm

    Hitting the pin with a screw or undersized punch will swell the pin and make it tighter. I preferer a hydraulic press or bearing press for this when possible. Lot more control and less distortion.

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