Mahr Supramess repair
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  1. #1
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    Default Mahr Supramess repair

    Does anyone have a manual on the Mahr indicator? It's part of a dial snap gage, and is jammed/stuck. I have it partially disassembled-face is off so I can partially see the mechanism, but aren't sure what I'm looking for.

    Rich

    Ok, it's now unstuck, looks like it only needed lubrication. What instrument oil do the folks here prefer?
    Last edited by machinistrrt; 05-21-2009 at 08:12 AM. Reason: update

  2. #2
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    Default Mahr supra

    Machinest,

    You may want to try Machinist Tool Repair in Valley City. 330 483 3202
    Ask for Mike. They are quite knowledgeable.

    Ray

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    Default Instrument Oils

    http://www.ofrei.com/page246.html

    Synta-A-Lube

    Use very sparingly !

    Regards,

    Steve

  4. #4
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    Default

    I'm not an expert, but I have read that one place you do not want oil is on the plunger, where it goes through the body of the indicator. I have had good luck disassembling sticky indicators, cleaning out the bore with brake cleaner and a small bristle brush, and the movement in an ultrasonic cleaner. Then apply oil only in a minute amount directly to the bearings and the rack and rack gear. I have some sperm oil intended for instrument repair that I use.

  5. #5
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    Default

    I have a supramess that has the scale lettering upside down. i.e. the plunger needs to be upwards to read the scale. The indicator works fine in that position. If I turn it over, with the plunger down, it sticks. Are the movements sensitive to gravity and designed to work only in one orientation?

    -Dave


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