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  1. #1
    Zirok is offline Plastic
    Join Date
    May 2010
    Location
    Phoenix USA
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    16

    Default Dial Test Indicator Repair Procedure

    Hello All,

    I was curious to know how a dial test indicator repairing is done.

    Can anyone please send me a data or any video mentioning about the dial repairing procedure?.
    Is there any spring adjustment or anything like that?

    Thanks for your time & patience.

  2. #2
    Eric M is offline Aluminum
    Join Date
    Nov 2007
    Location
    Orlando, FL
    Posts
    220

    Default Repairing Test Indicators

    Repair procedures for test indicators would vary, depending on the brand. For example: the inner workings of an Interapid indicator are vastly different from a Starrett "Last Word" indicator. Some indicators are more likely to be "field repairable" than others.
    Check out Long Island Indicator Service's website: 030 : Gage Repair Service
    They have a wealth of information available FREE. Good luck!

  3. #3
    Zirok is offline Plastic
    Join Date
    May 2010
    Location
    Phoenix USA
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    16

    Default

    Hi Eric,

    Sorry for late reply.

    Actually, I opened the dial way before & assembled all the items ( refer attachment ) but couldn't make it work properly. May be i am loosing out to preload the gearing ( may be by some spring ) or something like that.

    I would like to know your ideas on the same.

    Thk
    Attached Thumbnails Attached Thumbnails 1.jpg  

  4. #4
    Holescreek's Avatar
    Holescreek is offline Titanium
    Join Date
    Aug 2004
    Location
    Centerville,OH
    Posts
    2,011

    Default

    I just rebuilt a similar one yesterday that had been dropped and the two screws that held the bezel on stripped out.

    You are correct about needing to set the mainspring preload. On the model I worked on yesterday (an old Tesa) (had it not already had the face forcibly removed) I would have had to pop the crystal, remove the hand and the face and then the two screws that hold the back plate on to get it all apart.

    reassembly is opposite with the exception that you have to preload the mainspring first. I put the hand back on the pinion and wind the spring about 6 revolutions then set it back in the body to engage the rack. Then insert the screws and reassemble.

    All indicators I have ever worked on (both dial and test) require the mainspring pretension be set. How you go about it is determined by how they are assembled. It is important that you have a way to calibrate the indicator through it's range when your done. Improper engagement of the gears can cause variation which will need to be adjusted out by loosening the screws and changing the mesh.
    Last edited by Holescreek; 05-25-2011 at 02:10 PM. Reason: calibration info

  5. #5
    Zirok is offline Plastic
    Join Date
    May 2010
    Location
    Phoenix USA
    Posts
    16

    Default

    Sorry for late reply.

    I tried to attach a document ( mentioning about the flowchart of dial repairing ) but the file size is huge.

    Can you tell me your email ID so that I can mail you the same.

    Thk

  6. #6
    repair is offline Plastic
    Join Date
    Aug 2011
    Location
    seminole florida
    Posts
    13

    Cool indicator repair

    Hi All
    Each brand of indicator and if its a .0001 or .0005 indicator makes a big difference. on preload of the hairspring. .0001 indicators like less.
    I like Brown and Sharpe over them all. 6 Jewels wow.

    BOB
    Last edited by The real Leigh; 09-14-2011 at 08:02 PM. Reason: spam removed - TRL

  7. #7
    jim rozen is offline Diamond
    Join Date
    Feb 2004
    Location
    peekskill, NY
    Posts
    21,374

    Default

    Good web site. Clear and easy to follow.

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