Stewart speedometer

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Model T Ford Forum: Forum 2011: Stewart speedometer
Top of pagePrevious messageNext messageBottom of page Link to this message  By michael grady on Thursday, August 25, 2011 - 06:01 pm:

Guys,

I have a model 100 stewart speedometer that I am trying to tear down, clean up and lubricate. The main pinion was frozen. While I have been able to loosen it, I would like to be able to take it out and get some of the gunk I think is trapped in there. Anyone knwo how to remove the piece indicated by the arrow in the picture? I had a very nice conversation with Philip Kingston last PM and have dropped him a note as well. However, if one of you guys happens to know, I'd appreciate the advice.

Michaelspeedometer


Top of pagePrevious messageNext messageBottom of page Link to this message  By jack daron on Thursday, August 25, 2011 - 07:18 pm:

There is usually a boss with a tapered pin in it . If this is tapped out the drive pinion will come out. This too can be pressed apart,but do it very carefully as some contain very small ball bearings and you don't want to loose them.


Top of pagePrevious messageNext messageBottom of page Link to this message  By michael grady on Thursday, August 25, 2011 - 09:57 pm:

Jack- Any idea where the tapered pin might be?


Top of pagePrevious messageNext messageBottom of page Link to this message  By jack daron on Thursday, August 25, 2011 - 10:18 pm:

Would need more pictures from different angles


Top of pagePrevious messageNext messageBottom of page Link to this message  By michael grady on Thursday, August 25, 2011 - 10:31 pm:

i'll send more in the morning - thanks Jack


Top of pagePrevious messageNext messageBottom of page Link to this message  By Russ Furstnow on Thursday, August 25, 2011 - 11:50 pm:

The pot metal has swollen and the main shaft is now tight because of the swelling. You cannot get the main shaft out because the worm gear that operates the odometer is pressed onto the main shaft and you will break the pot metal body trying. Trust me, I've destroyed the pot metal body trying to loosen the main shaft.

The piece you have noted is removed by placing the piece in a vice and hitting the main shaft. Be careful,

Hope this helps,
Russ Furstnow


Top of pagePrevious messageNext messageBottom of page Link to this message  By Kerry van Ekeren. (Australia) on Friday, August 26, 2011 - 01:30 am:

Yes they are very easy to break, I cleaned one up the best I could,then drilled a small hole in the pot metal above the cable thread, pumped in graphite powder while spinning the drive with a drill, that was 3 years ago and still going ok.


Top of pagePrevious messageNext messageBottom of page Link to this message  By michael grady on Friday, August 26, 2011 - 10:08 am:

Russ and Kerry...thanks, that makes sense.

I'll try and drill the hole in the pot metal and add the graphite.

Russ...can you elaborate on how to remove the piece I note? When you say 'hitting' the main shaft, doesn't that break the pot metal body?

michael


Top of pagePrevious messageNext messageBottom of page Link to this message  By Russ Furstnow on Friday, August 26, 2011 - 11:11 am:

Michael, Tapping the main shaft with a punch will work, BUT you stand the chance of breaking the entire unit. These units are 100 years old, and they are quite fragile.

Russ Furstnow


Top of pagePrevious messageNext messageBottom of page Link to this message  By Russ Furstnow on Friday, August 26, 2011 - 11:13 am:

Michael,

BTW, if you soak the entire body in lacquer thinner for a day or so, it will remove the grease and grime. Use sewing machine oil to lubricate the main shaft while it is still in the pot metal body.

Russ Furstnow


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