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CAT 10 Ring and Pinion

CAT 10 Ring and Pinion

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drujinin
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I have 2 transmissions for my project tractor. One has the ring and pinion on the Left side and the other has the ring and pinion on the Right side. 😮
Can anyone tell me why?
Which one is correct for a Standard width Tractor?
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Wed, Apr 23, 2008 8:40 PM
WyoCat
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I am guessing that one of those transmissions were either put together wrong or it could be that one of them are set up for a High Clearance tractor. The ring gear needs to rotate the other direct to make up for the additional intermediate gear in the final drives that a standard TEN does not have. This way you can still move forward in a forward gear! What are the serial numbers that are stamped into the housings?
Chad Enyeart
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Wed, Apr 23, 2008 9:00 PM
Dunefanatic
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Reply to WyoCat:
I am guessing that one of those transmissions were either put together wrong or it could be that one of them are set up for a High Clearance tractor. The ring gear needs to rotate the other direct to make up for the additional intermediate gear in the final drives that a standard TEN does not have. This way you can still move forward in a forward gear! What are the serial numbers that are stamped into the housings?
I believe Chad is dead on regarding his HighTen comments and the additional gear in the HighTen causing the needs for the reversed ring and pinion.
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Thu, Apr 24, 2008 2:24 AM
drujinin
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Reply to Dunefanatic:
I believe Chad is dead on regarding his HighTen comments and the additional gear in the HighTen causing the needs for the reversed ring and pinion.
Well which one is the correct one for a standard tractor?
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Thu, Apr 24, 2008 8:53 AM
side-seat
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Reply to drujinin:
Well which one is the correct one for a standard tractor?
Engine- CW
Tranny pinion-CCW
Ring gear-CW
Final pinion-CCW
Bull gear-CW
I would say looking from the rear, Ring gear on the Right. I havn't had one apart for awhile.
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Thu, Apr 24, 2008 9:38 AM
Pat in WI
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Reply to side-seat:
Engine- CW
Tranny pinion-CCW
Ring gear-CW
Final pinion-CCW
Bull gear-CW
I would say looking from the rear, Ring gear on the Right. I havn't had one apart for awhile.
Steve is correct,

Ring gear on a standard TEN is on the right side. (always from operators perspective)
Pat in WI
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Thu, Apr 24, 2008 3:53 PM
drujinin
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Reply to Pat in WI:
Steve is correct,

Ring gear on a standard TEN is on the right side. (always from operators perspective)
OK, Great!
Now I'll set the correct one on the build up stand!
😊
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Thu, Apr 24, 2008 8:19 PM
drujinin
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Reply to drujinin:
OK, Great!
Now I'll set the correct one on the build up stand!
😊
One is 3889 and the other is 4509.
I feel stupid because I forgot to check and see which had the left pinion and one the right.
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Wed, Apr 30, 2008 1:54 AM
WyoCat
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Reply to drujinin:
One is 3889 and the other is 4509.
I feel stupid because I forgot to check and see which had the left pinion and one the right.
I would bet money on the PT 3889 tractor being the one set up as a high TEN. I would be curious to know if this is the case. If you could let us know I would appreciate it! Have a great day!
Chad Enyeart
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Wed, Apr 30, 2008 3:53 AM
drujinin
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Reply to WyoCat:
I would bet money on the PT 3889 tractor being the one set up as a high TEN. I would be curious to know if this is the case. If you could let us know I would appreciate it! Have a great day!
PT3889 is the one that when you spin the Transmission input shaft clockwise and go through all 4 gears the clutches spin backwards in 3 gear selections.

Which with a Bull gear in the final drive would make the track axle go forward.
Wouldn't this be correct for a standard?

WyoCat how would you know that is the transmission case that was setup for a high ten just by the serial number?

I made a mistake on the other transmission case its PT4501 not PT4509.
If it makes a difference at this point.

Actually before I hit send, I am still confused about the direction of input verses the direction of axle movement?

Because if you face your watch/clock and "start" it in a CW direction. Then walk around back of the watch/clock it now looks like it running CCW. Which would be the input to the transmission which would be operators perspective, hence Input is CCW.

Engine- CW from front because you put the crank in and pull up in a clockwise motion? Yes or No??
Tranny input - operators perspective would then be CCW
Tranny ouput pinion-would then be CW
Ring gear-direction thru clutches would need to be CCW
Final drive bull gear-would be CW

So it would have to be the left ring gear is correct which means 3889 is a Standard???
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Wed, Apr 30, 2008 8:56 PM
WyoCat
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Reply to drujinin:
PT3889 is the one that when you spin the Transmission input shaft clockwise and go through all 4 gears the clutches spin backwards in 3 gear selections.

Which with a Bull gear in the final drive would make the track axle go forward.
Wouldn't this be correct for a standard?

WyoCat how would you know that is the transmission case that was setup for a high ten just by the serial number?

I made a mistake on the other transmission case its PT4501 not PT4509.
If it makes a difference at this point.

Actually before I hit send, I am still confused about the direction of input verses the direction of axle movement?

Because if you face your watch/clock and "start" it in a CW direction. Then walk around back of the watch/clock it now looks like it running CCW. Which would be the input to the transmission which would be operators perspective, hence Input is CCW.

Engine- CW from front because you put the crank in and pull up in a clockwise motion? Yes or No??
Tranny input - operators perspective would then be CCW
Tranny ouput pinion-would then be CW
Ring gear-direction thru clutches would need to be CCW
Final drive bull gear-would be CW

So it would have to be the left ring gear is correct which means 3889 is a Standard???
Very good question. The reason why I had a strong feeling about this is that the majority of the high TENS have been found between serial numbers 3500 and 4000. I can think of 20 or so that fall into that serial number break down and I only know of one that falls out of that range, but I sure that there are more.

I will try and break down the roation for you. Yes CW on the front of the engine is CCW when looking at the back if the trans or pinion gear. So now looking at it from the rear, if the ring gear was on the left side of the pinion, the top of the ring gear would go towards the front of the machine. If the ring gear was on the right side of the pinion the top of the ring gear would go towards the rear. Does this make sense? If it does, please keep reading.

From this point forward we will look at the side view of the left final drive with the front of the machine to the left.

With the ring gear on the left of the pinion we have stated that the the top of the ring gear will move towards the front of the machine. Now with our new view point (left side of the machine) that would be CCW. CCW through the brake drum and to the small drive gear. The bull gear and the sprocket would be CW for a standard ten at this time, which is the wrong direction. Therefore if the ring gear is on the left of the pinion it would be for a High Clearance tractor. There is a third gear in the HC final drives. That changes the bull gear and sprocket rotation back to CCW, which is the correct rotation for the view point that I have explained. Does all of this make sense?
Chad Enyeart
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Wed, Apr 30, 2008 10:13 PM
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