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Transmission Metal

E

equeen

Member
Metal was found in the transmission case - pto end - of this Farmall Super A "spare" transmission.
The pieces are approx 1/4 inch wide.

There is no sign of any damage to any gears. The shafts turn fine by hand.

Anyone have any clue if this metal could be from any part of the interior of the trans or pto unit?
a235666.jpg
 
Bearing Cage is it. I think it is a roller bearing though. Looking at the long edges there seems to be contact wear. Jim
 
They dont resemble any king of bearing cage to me. To me they look flat as in laying level with the, what I assume, is a table top, and are bent up on the ends. Maybe the OP can post a pic of the side of these pieces.
 
Another photo of the metal.

Two of the pieces do fit together as indicated in the photo. When mated, it is a single flat piece with rounding on the ends.

The largest piece could have been flat in the center, I suppose.

There is no way the pieces fit together except as noted regarding the small pieces.

Further question: As much as I can see of the roller bearing on the countershaft, the bearing seems intact. The shaft turns freely when the trans spline is turned by hand. What are the odds - wild guess - that these are "foreign" pieces of metal and not related to the transmission?
a235691.jpg
 
I see no way that either of these pieces could have been rounded as is the race of a bearing. I'm not familiar with a bearing "cage", though from photos I've viewed on the net, I really can't determine how the cage on a roller bearing works or looks.
 
Google images of tapered roller bearings, the cage is very similar. There are several of these in the trans. Jim
 
(quoted from post at 12:48:47 08/26/16) I see no way that either of these pieces could have been rounded as is the race of a bearing. I'm not familiar with a bearing "cage", though from photos I've viewed on the net, I really can't determine how the cage on a roller bearing works or looks.
Click to expand...

4 components in a tapered roller bearing. The first is the cup, often called the race, and then the cone is made up of the remaining three. the inner race, the rollers, and the cage. The cage retains the rollers on the cone.

The pieces shown are most definitely the pieces of cage between the rollers meaning this trans has had or has now a bearing failure.
I would not use it without close bearing inspection.

28634584153_4faeda48b9_o.jpg
 
Here is a question for you guys to think about. My dad and I planning on possibly using this transmission in my grandsons his great grandsons (age two) SA. Is there a way to test the transmission without going through the split of the tractor? I do love spending with dad and we have fun from the experiences we go through. However sometimes there may be a easier way that experience has already proven.
 
Okay, I googled tapered roller bearings and found several views, such as the above, and see how these pieces of metal could be part of a bearing cage.

Unless I've overlooked one, my parts manual reflects only one roller bearing in the transmission case - and it's on the rear of the countershaft.

As best as I can see, that bearing seems intact. Also, from turning the spline -thus countershaft- by hand it turns freely.

Could two pieces of the cage break away and get out of the bearing/race without some major "destruction" of the bearing/race?
 
(quoted from post at 04:37:30 08/27/16) Okay, I googled tapered roller bearings and found several views, such as the above, and see how these pieces of metal could be part of a bearing cage.

Unless I've overlooked one, my parts manual reflects only one roller bearing in the transmission case - and it's on the rear of the countershaft.

As best as I can see, that bearing seems intact. Also, from turning the spline -thus countershaft- by hand it turns freely.

Could two pieces of the cage break away and get out of the bearing/race without some major "destruction" of the bearing/race?
Click to expand...

It is my guess that the pieces you found are from a bearing failure, and the bearing was replaced. The "shrapnel" went to the bottom, and since it wasn't going to hurt anything, it was just left there and ignored.
 
Thanks to everyone for your responses. They have been helpful. While the view is limited, I see no signs and feel no signs of a heavily damaged bearing, thus we're going to install the transmission and test it one step at the time.
 
All ball and a roller bearing and no cones that I know of. Don't look like pieces of the oil slinger, but if not that I have no idea.
 
Check them for hardness with a file. If you can cut them with a file, they didn't come from a bearing. Bearing races are pretty brittle, doubt if you could bend one that straight without breaking.
 
Just back from a quick trip to the shop to try your test, Paul.

Edge of a file slides across it like butter on a butter knife. File won't make a dent in it.

Put the larger piece into a vise and was able to flatten the center part; however, when I then took my hammer and bent it into a 45, it began breaking. It is still intact at 45, however the metal cracked instead of bending. Holding together but just barely.

Been doing some further thinking about this trans. It came out of a 49 SA with a severely "busted" engine - something went thru a cylinder sleeve wall. Thus, I'm guessing the tractor was junked due to engine problem. Makes me even more optimistic that the trans may be okay and this is just abandoned metal from a prior problem with trans.
 
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