[Source] Trac A Dial 7a

Bamban

Bamban

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Jul 13, 2014
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Folks,

I am looking for instruction sheet on how to take a 7A apart. I acquired a used one with one of the needles kind of bent and both dials washed out. The internal mechanism appears to work just fine.

From Southwest Industries I bought the needles, the dials, and the maintenance kit. Now I need to find out how these units come apart. I got some pictures from another gentleman, but they are for the model 6 with dial knob.

Thank you, I appreciate any help. On the other hand if anyone who has done this work and willing to do mine for a fee, I will be all over it.

I have a T Dial on my 1236, I love it. I put a DRO on the Z drive on my first 1024, though it is OK, I still take a T Dial any day. With the newly acquired SBL 13, the T Dial will be installed in it, one way or another.

nez
 
I would think that you might be better off sending it out for work. It's probably no different than any indicator.
 
I have worked on them before. Can’t recall any difficulties. I do remember that you want to make sure that the anti-back lash is set-up correctly (just line up all the holes and pin it, is my recollection). Good Luck, Dave.
 
chips&more said:
I have worked on them before. Can’t recall any difficulties. I do remember that you want to make sure that the anti-back lash is set-up correctly (just line up all the holes and pin it, is my recollection). Good Luck, Dave.
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How did you remove the dial hands? How did you remove the dial face?
 
To remove the hands is just like working on a pocket watch. You can use a small puller made for removing watch hands or just use two small regular screwdriver blades and a piece of paper with a “V” cut. Lay the paper down on the dial and wedge the hands off with the screwdrivers. Maybe YouTube could have a video for you to view.
 
chips&more said:
To remove the hands is just like working on a pocket watch. You can use a small puller made for removing watch hands or just use two small regular screwdriver blades and a piece of paper with a “V” cut. Lay the paper down on the dial and wedge the hands off with the screwdrivers. Maybe YouTube could have a video for you to view.
Click to expand...

Thank you, never taken a pocket watch before. What holds the hands? Just press fit? How are the dials held in place.

I will check YouTube, have not seen a tutorial online, will keep mining.
 
If I remember right, to get inside the casing you need to scoop out some epoxy that's potted over the screws on the underside - once inside they're not so complicated, a good clean and some watch oil on the gears and pivots wouldn't go amiss.

Dave H. (the other one)
 
In the file I posted it tells how to remove and replace the crystal. that should get you to the hands and face. Page 87 step 4
 
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