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Screws stuck on Jotul 602 B outlets

Post in 'Classic Wood Stove Forums (prior to approx. 1993)' started by Psuedotsuga, Oct 15, 2011.

  1. Psuedotsuga

    Psuedotsuga New Member

    Joined:
    Oct 6, 2011
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    Loc:
    Durango, CO
    Hi. I'm trying to switch an old Jotul 602 B from top-vent to rear-vent, but can't get the screws on either the pipe adaptor or rear plate to budge. Too much rust/creosote. I've tried liquid wrench, tapping the screwdriver with a hammer, and even a screw extractor on one screw. No luck. Any suggestions? Thanks.

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  2. remkel

    remkel Minister of Fire

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    Loc:
    Southwest NH
    Had a similar problem when I was changing over my old vigilant....I believe the solution was an impact drill.

    Good luck with this one.
  3. begreen

    begreen Mooderator Staff Member

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    South Puget Sound, WA
    Sheer them off, then drill them out with a good sharp bit, then retap.
  4. webbie

    webbie Seasoned Moderator Staff Member

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    Western Mass.
    On the stove, you might be able to get away without retapping - that is, drill them out and then use a though bolt to attach the blank plate or the collar. This depends on whether they are already through bolts (some stoves have tappings from the inside that do not penetrate the plates...)
  5. Psuedotsuga

    Psuedotsuga New Member

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    Loc:
    Durango, CO
    Thanks for the tip. I've never re-tapped threads. What type of drill is required? Does the cast iron make it more diificult? Thanks.
  6. begreen

    begreen Mooderator Staff Member

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    When I rebuilt our 602 I was prepared for all sorts of grief drilling out the bolts. With a fresh bit it was a piece of cake. The bolts are steel, not cast iron.
  7. webbie

    webbie Seasoned Moderator Staff Member

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    If you do re-tap you have to have a drill that matches the size of your tap. It may have to be a size up from what is used now - if you mess up the existing threads by removing the bolts. But that might not happen.

    Most hardware or auto parts stores will have the taps and matching bits.

    Or, use the ultimate source - McMaster-Carr - the tables there should show the right size bits and taps.
    http://www.mcmaster.com/#taps/=ejl0m6


    Cast iron is relatively soft and easy to tap.
  8. Psuedotsuga

    Psuedotsuga New Member

    Joined:
    Oct 6, 2011
    Messages:
    13
    Loc:
    Durango, CO
    Thanks everyone. I finally undertook this task yesterday...three hours and three broken bits later, I have reconfigured the stove. Re-tapping was really easy. Removing the old screws was the big challenge. On to the hearth and installation...

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