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123 cub cadet hydro trans.

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Bill W

10-28-2000 09:10:36




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I'd like to know what could be wrong with my dads hydro trans. we went to the library and got pages on how to rebuild the trany,but they didn't tell anything on trouble shooting! Ours won't move in forwards or reverse we've had this thing apart so many times I'm dreaming about it,but it still won't move. I've changed the oil and filter cleaned the case and housing,but nothing. Please any help is better than none because thats all i'm getting!

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joe

07-18-2002 10:55:52




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 Re: 123 cub cadet hydro trans. in reply to Bill W, 10-28-2000 09:10:36  
the linkage has a spring and roll pin under the seat and fender check that ,sounds dumb but i had a guy come in and his wasn't moving the trans lever



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Jim S.

11-01-2000 11:18:21




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 Re: 123 cub cadet hydro trans. in reply to Bill W, 10-28-2000 09:10:36  
Just wanted to add this from the other forum, in case someone is learning by reading this string. When you spin the hydro with the drill in REVERSE, you are spinning it in the correct rotation. The engine is mounted to run COUNTERCLOCKWISE, which would be reverse on the drill. You said on the other forum that it will work and turn the wheels when spun in that direction.

Like I said, this is just to clear that up if anyone is following this string to try to learn about CC hydros.

If you have trouble with it not working in either forward or reverse with the drill spinning counterclockwise, I concur with my friend Jim D. that your dump valves are stuck or badly leaky.

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Farmall Gray

10-31-2000 18:24:27




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 Re: 123 cub cadet hydro trans. in reply to Bill W, 10-28-2000 09:10:36  
I saw you post the same question on another board.
Someone suggested that if it works spinning it with a drill in reverse that the charge pump is on upside down.



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Jim D

10-28-2000 12:49:47




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 Re: 123 cub cadet hydro trans. in reply to Bill W, 10-28-2000 09:10:36  

Does this tractor still have the manual release lever so you can push it around? Is it in the right position to drive? If it is,that would indicate a high probability that the dump valves are stuck due to rust/dirt. They were designed to spring "up" when the release lever was placed in the drive position;the release would push them "down" to enable you to push the tractor by hand. If they are stuck in the "down" position the tractor's hydro will not drive. One controls the forward mode,the other the reverse. To determine this try pushing the tractor for about 10 feet;does it "resist" or freewheel? That will tell you if they are the problem.
Now if none of this helps,check the driveshaft pins. The front one is a steel pin that can eventually fail,the rear is a spirol pin that could possibly shear off. They may appear to be fine when looking at them but be sheared inside the shaft. You should be able to see the back of the hydro pump;check to see if the shaft is turning when the engine is running,even when moving the hydro control. Hope this helps!

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Bill W

10-28-2000 15:53:19




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 Re: Re: 123 cub cadet hydro trans. in reply to Jim D, 10-28-2000 12:49:47  
We've done everything you've suggested the shaft on top does spin, but the rear end shaft does not spin. We did put a drill on the main drive shaft and spun it in the direction of the motor spinning and it still does not work, but if you put the drill in reverse it does work what is the deal??



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Jim D

10-28-2000 16:03:19




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 Re: Re: Re: 123 cub cadet hydro trans. in reply to Bill W , 10-28-2000 15:53:19  
When you used a drill to turn it,that would seem to indicate that the rollpin is sheared off(likely) or the hydro shaft is busted(unlikely) I have to believe that spiroll pin is broken. The one that goes in the hydro input shaft. Drive it out,it's 1/4" dia. and see what ya find.



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Jim D

10-28-2000 16:07:04




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 Re: Re: Re: Re: 123 cub cadet hydro trans. in reply to Jim D, 10-28-2000 16:03:19  
That shaft through the hydro pump is one piece,when you spin one end the other MUST turn also. If not it is broken. So if you used a drill to spin it either it is broken OR the spiroll pin is sheared off in the driveshaft. One or the other happenned.



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Bill W

10-28-2000 16:24:53




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 Re: Re: Re: Re: Re: 123 cub cadet hydro trans. in reply to Jim D, 10-28-2000 16:07:04  
We had the trany all the way out when we put the drill on the shaft so we checked the pin then,but it was good then.



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