murray moore
Member
I have been driving this 1959 871 with a 312259 SOS for several years without any real issues other than from time to time R1, 1, 2, 5, and 6 sometimes slip out of gear or possibly into neutral while driving it. When that happens I just move the selector to 3 or another gear and it will then resume in those gears when I move the shifter back to those speed selections.
This year, I decided to spend some time to familiarize myself with this SOS and help the tractor not bog down when using the FEL or putting it in gear by trying to make a band 1 adjustment and to see if it would help solve the bogging down issue.
While attempting this, I found it interesting, the traction coupling lever wouldn't move so I tried rocking the tractor without much success to move the lever. I then jacked up the rear of the tractor and moved the wheel until suddenly the traction coupler freed up. It freed up so much that the lever was really loose with no resistance at all. (I moved it counter clockwise from the position it had been in.)
1. Is this what should happen?
With the rear off the ground, I started the tractor and while in the seat moved the selector through the speed controls and the rear wheels moved as they should in what I thought was the disengaged position.
Today, I dug into the manual to better understand the traction coupler and found that this lever has been in the disengage position all the while using and driving the tractor over the past couple years. Therefore yesterday, when I was able to move the lever into the loose position or engaged position, the wheels would move with the rear up, and the selector shifting through the speeds.
2. So... why does the tractor work when the coupler has been in the disengaged position over the past several years?
Tonight, I will try driving the tractor with the coupler in what should be the engaged position and see if it will work.
I may take the inspection plate off and see if there are issues there - but I don't have a photo reference to know what is to be correct.
I still have not changed the oil and hope to do that tonight too....assuming its not raining outside.
Any thoughts or advice is appreciated to help me understand and learn.
This year, I decided to spend some time to familiarize myself with this SOS and help the tractor not bog down when using the FEL or putting it in gear by trying to make a band 1 adjustment and to see if it would help solve the bogging down issue.
While attempting this, I found it interesting, the traction coupling lever wouldn't move so I tried rocking the tractor without much success to move the lever. I then jacked up the rear of the tractor and moved the wheel until suddenly the traction coupler freed up. It freed up so much that the lever was really loose with no resistance at all. (I moved it counter clockwise from the position it had been in.)
1. Is this what should happen?
With the rear off the ground, I started the tractor and while in the seat moved the selector through the speed controls and the rear wheels moved as they should in what I thought was the disengaged position.
Today, I dug into the manual to better understand the traction coupler and found that this lever has been in the disengage position all the while using and driving the tractor over the past couple years. Therefore yesterday, when I was able to move the lever into the loose position or engaged position, the wheels would move with the rear up, and the selector shifting through the speeds.
2. So... why does the tractor work when the coupler has been in the disengaged position over the past several years?
Tonight, I will try driving the tractor with the coupler in what should be the engaged position and see if it will work.
I may take the inspection plate off and see if there are issues there - but I don't have a photo reference to know what is to be correct.
I still have not changed the oil and hope to do that tonight too....assuming its not raining outside.
Any thoughts or advice is appreciated to help me understand and learn.
