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.
Michael
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.
Jack- Any idea where the tapered pin might be?
Would need more pictures from different angles
i'll send more in the morning - thanks Jack
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
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.
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
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
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