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Go Back   Only Cub Cadets > Cub Cadets > CCC/MTD Cub Cadet built Tractors (GT)

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  #1  
Old 07-26-2016, 03:17 PM
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Dave1953 Dave1953 is offline
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Default 2072 Super wont move, rear end locked up

I made a post a few weeks ago about a 2072 I recently bought that would not roll. I stated that when the rear wheels were off the ground the tires turned freely and when you turned one side the other side turned in the opposite direction but they would not turn both at the same time in the same direction. Well I finally got time to take the 3 pt. hitch plate, drawbar and rear cover off exposing the gears and found that the ring & pinon gears are not moveable. The spider gears are fine. I cannot see anything wedged between the ring & pinon gear. When you crank the engine and move the SR lever in either direction it loads the engine down so the pump is working and the lift cylinder is working but it just like the ring & pinon are welded together. Does anyone have any suggestions? Dave
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Old 07-26-2016, 03:34 PM
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Sounds like you will be pulling the rear apart. Once you have the rear out of the tractor pull the pump off and see if you can turn the ring gear. If the ring gear turns with the pump off you have a problem inside the pump. If the ring gear is still stuck you have a problem in the rear.
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  #3  
Old 07-26-2016, 08:25 PM
stlmowerguy stlmowerguy is offline
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When you had it lifted the wheels turned by hand right?

I don't know the 2000 series, but does it have the transmission release rod? Had a mower that had the release had locked up causing the transmission to not move. Moving the wheels by had though wasn't an issue.

Someone else can chime in but the wheels moving in the opposite direction when turned by hand is normal in an open differential. All of my mowers have always did this (and cars too)
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Old 07-26-2016, 09:19 PM
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Terry C Terry C is offline
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Quote:
Originally Posted by stlmowerguy View Post
When you had it lifted the wheels turned by hand right?

I don't know the 2000 series, but does it have the transmission release rod? Had a mower that had the release had locked up causing the transmission to not move. Moving the wheels by had though wasn't an issue.

Someone else can chime in but the wheels moving in the opposite direction when turned by hand is normal in an open differential. All of my mowers have always did this (and cars too)
2072 is not a 2000 series like the newer ones. It's a hydrostat with the same style diff that old Cubs had.
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Old 07-26-2016, 10:23 PM
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Quote:
Originally Posted by Sam Mac View Post
Sounds like you will be pulling the rear apart. Once you have the rear out of the tractor pull the pump off and see if you can turn the ring gear. If the ring gear turns with the pump off you have a problem inside the pump. If the ring gear is still stuck you have a problem in the rear.
What he said. He is right on the money, time for a tear down, Dave.
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  #6  
Old 07-26-2016, 11:57 PM
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Default 2072 rear end

Oh well, I knew it would probably come to that. My problem is that I am almost blind now (been legally blind for years) an am unable to do the work myself any more. Finding someone who is knowledgeable to do this kind of work locally around here is almost impossible and if I gotta take it to a dealer I might as well part it out because when they got through with me I will wish I had parted it out. Thanks to all who responded.

Dave
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  #7  
Old 07-27-2016, 12:07 AM
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Can you pull the pump off of it and see if the wheels will spin?
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Old 07-27-2016, 12:10 AM
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Maybe even pull both relief valves out first and see if it moves.....
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Old 07-27-2016, 10:33 PM
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They're supposed to turn opposite direction when off the ground. With it on the ground, can you roll it? If not, like what was just mentioned, it could be the relief valves.
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