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-   -   782D no forward, reverse, or lift-- please help (https://www.onlycubcadets.net/forum/showthread.php?t=31267)

InternationalCub 04-14-2014 07:55 PM

782D no forward, reverse, or lift-- please help
 
Hi everyone,

I have a 782D that I was plowing with a few weeks ago. As I was going from forward to reverse, the tires stopped turning (either direction) and the plow dropped all the way to the ground. The engine was running fine.

I can't figure out the problem. The engine starts and runs great. It just won't transfer any power to the wheels and the hydro lift for the plow/mowing deck doesn't move. I checked the assembly from the lever on the dashboard to the transmission and everything is intact. It only has 465 hours on it. I bought it with 416 hours on it 2 years ago. I'm not sure when the hydro fluid was last changed, but I never changed it. It's not low on fluid and there are no leaks. I had no problems with the lift or transmission before this problem.

Any help/advice would be appreciated. I was looking to sell the tractor, but I need to get this issue straightened out.

Paul

IHCadetCollector 04-14-2014 07:59 PM

Check the driveshaft.

drglinski 04-14-2014 08:50 PM

I'm not completely up on my knowledge of 782s but I do know that if the drive shaft quits then everything from the engine back quits. On the older models there are spiral pins that can break causing the same issue- check to see if this is an issue.

Cub Cadet 123 04-14-2014 09:19 PM

Clogged filter or problem with the relief valves (stuck?). I would start with regular service of it by changing the fluid and filter and then pull the check valves and inspect them.

Cub Cadet 123

Alvy 04-14-2014 09:29 PM

Quote:

Originally Posted by Cub Cadet 123 (Post 254551)
Clogged filter or problem with the relief valves (stuck?). I would start with regular service of it by changing the fluid and filter and then pull the check valves and inspect them.

Cub Cadet 123

Check valves sounds like it would cause symptoms. I think if it were a driveshaft/pin issue the plow would not have dropped but maybe I'm wrong

Rescue11 04-14-2014 09:47 PM

Does it even have fluid????

J-Mech 04-14-2014 10:35 PM

My money is on a broke driveshaft pin.

Yosemite Sam 04-14-2014 10:52 PM

So far all good suggestions, and I agree that you should probably change the fluid and filter, especially if you don't know the history of the machine.

I too am a little puzzled by the blade dropping.

However, before anything, I would check the input shaft on the trans to make sure it's turning with the drive shaft (and engine) the pin on the back coupler can break and you can't tell that it's broken.

inspectorudy 04-14-2014 11:36 PM

It would seem to me that if the shaft was sheared then there would be no pressure to hold up the plow or drive the tranny. Does that model have power steering? If so then that would not work either.:beerchug:

J-Mech 04-14-2014 11:56 PM

Quote:

Originally Posted by inspectorudy (Post 254594)
It would seem to me that if the shaft was sheared then there would be no pressure to hold up the plow or drive the tranny. Does that model have power steering? If so then that would not work either.:beerchug:

The valve holds up the lift, even if the pump stops. No, a 782D doesn't have power steering.

May have two problems. :bigthink:


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