2012 4010 Mahindra Daedong overall Problems Dump Steer

[bbbmgo]

I was offered (what I thought was) a deal to trade-up my 3016 for a 4010. I have greatly regretted the decision with only 36 hours on the tractor and am arguing with dealer and Mahindra to try to make the problems right. The problems thus far are moisture in the gage cluster, the cruise control button would not activate unless it was pressed three or so times, the left brake steer was none functioning, the tractor would not steer to the right (leaving me stuck in a field), and the dump bucket would free-dump after a certain point. The dump lever would have to be held for an additional five or so seconds before the dump would complete.

The gage cluster and cruise control switch were replaced. The left brake steer adjusted. The steer cylinder was replaced after it was discovered the piston seized after marring the wall of the sleeve, making it inoperable. That leaves the bucket dump still not operating as intended.

When I dropped off the tractor for service, I was told the dump issue was a known issue. The service manager had a New Holland with a similar issue which required a restrictor in the piston to allow the piston to operate without air getting into the cylinder.

After a week of waiting, I was told my tractor was fixed and ready to go. I went to the dealer and the service manager informed that the bucket dump was not able to be fixed because Mahindra did not have a fix for it yet (but was working on it). I told him I did not want the tractor until it was fixed. He replied that he would look into getting it fixed. In addition, he explained that the restrictor idea would not work because it would slow the bucket too much.

So here I sit, attempting to get the season started and the manufacture, nor the dealer, is willing to help. I had to finagle the tractor out of the field and onto the trailer, waste my gas and time taking it to the dealer, and they refuse to give a loaner tractor, buy it back, or at this point, fix it... The brat salesman told me that I値l 渡ever be happy. The owner has not returned my phone call. Mahindra tells me that they don稚 buy tractors back and it is up to the dealer. Now mind you, all of this is in addition to me having to spend eight hours, plus parts, to fix the heating issue with tractor (Mahindra tells me the parts are still on order for their fix to the problem). This tractor, the dealer, and Mahindra are a joke! Buy Kabota or John Deere, forget the five year warranty and the cheaper Mahindra!

Any ideas to fix the bucket dump?

 

[Brad_Blazer]

The dump behavior is a common "problem." When you dump or lower a load that wants to fall by gravity, the retracting side of the cylinders is open to the tank and the extending side is being filled by the pump. If the load is heavy enough to want to outrun the pump, it will pull a vacuum on that side. There is only 15psi of vacuum available so the load easily creates a void (oil vapor, not air) on the extending side. Once the load is grounded or hanging freely, there is a delay until the pump finishes filling the cylinder, at which point the motion resumes.

It is not a defect, it is the way all hydraulic systems work. It would be possible to install a pilot operated check valve on the retracting side but if there is a float function it would be disabled. The bucket dump typically does not have a float detent so it is a viable option if you cannot live with the current behavior. I am not aware of any brand of tractor that has a pilot operated check valve standard on that circuit so every brand of tractor will behave pretty much as you describe. Maybe some have a restrictor on the extending side to mitigate the effect.

Some dump circuits have a regen detent on the control valve which opens both ends of the cylinder to the pump so the rod is the effective piston size. If you just want a faster dump this is the way to go.

 

[bbbmgo]

Brad, I appreciate the reply. I noticed it as a problem when I get stuck and attempt to push myself out with the bucket. In those situations, the bucket acts if it has no power to push. I never had that issue with the 3016. Is due to the same issue you described? As a side note, the bucket goes limp even when empty.

Thanks in advance.

 

[J_J]

Are you using regen to fast dump?

Regen will close off the one work port and use the fluid to add to the extend side for a fast dump.

Excerpt:

Regen is a "feature" of most modern FEL (Front End Loader) valves, it's on the Dump (joystick far right) circuit, and is also referred to as "Fast Dump". The reason it is nice to have is that without it, the weight of a filled bucket can actually "pull" the bucket down faster than the fluid can enter the other side of the cylinder, this will create a air pocket and give the bucket a "floppy" feeling until the joystick is held in the dump mode a few seconds to refill the cylinder pushing the air past the seals. So we add "regen" or "regenerative" function to the valve.

You might want to check your cyl for bypass fluid. Leaking piston seals.

Some valves have regen in the first part of the lever movement, and others have it at the end of travel using a soft detent.

Pushing the lift arms down with the valve lever, you should be able to raise the tractor front end in the power mode.

In regen mode, you might not be able to lift the front end of the tractor.

When the valve levers are in neutral, the bucket should be locked and not move. If the bucket moves from the position you left it, then the cyls seals are leaking.

 

[J_J]

When a dealer keeps feeding you BS, he is trying to get you out of his face or he does not know how to troubleshoot or fix the problem.

 

[Brad_Blazer]

Brad, I appreciate the reply. I noticed it as a problem when I get stuck and attempt to push myself out with the bucket. In those situations, the bucket acts if it has no power to push. I never had that issue with the 3016. Is due to the same issue you described? As a side note, the bucket goes limp even when empty.

Thanks in advance.

It might be like JJ says, if your valve has regen it will have speed but not much power in that detent. If you adjust the lever position to the normal mode it should have full power.

From your description though there is also a lack of power when curling - pushing yourself backwards with the bucket? Maybe it has a float detent. The way that would work, the valve will operate normally until you push the lever past the detent. Past the detent the valve will allow the bucket to float or flop around as you describe.

 

[SPYDERLK]

I was offered (what I thought was) a deal to trade-up my 3016 for a 4010. I have greatly regretted the decision with only 36 hours on the tractor and am arguing with dealer and Mahindra to try to make the problems right. The problems thus far are moisture in the gage cluster, the cruise control button would not activate unless it was pressed three or so times, the left brake steer was none functioning, the tractor would not steer to the right (leaving me stuck in a field), and the dump bucket would free-dump after a certain point. The dump lever would have to be held for an additional five or so seconds before the dump would complete.

The gage cluster and cruise control switch were replaced. The left brake steer adjusted. The steer cylinder was replaced after it was discovered the piston seized after marring the wall of the sleeve, making it inoperable. That leaves the bucket dump still not operating as intended.

When I dropped off the tractor for service, I was told the dump issue was a known issue. The service manager had a New Holland with a similar issue which required a restrictor in the piston to allow the piston to operate without air getting into the cylinder.

Any ideas to fix the bucket dump?

Are you talking about not being able to control a slow dump ... or a lack of "linear" control in a fast dump? -- If fast dump, try the dump in regen position as described by other posters. OTOH, If you cant control a slow dump in linear fashion with the joystick, thats a danger. I dont recall ever experiencing it. It would sure be noteworthy.
larry

 

[bbbmgo]

After a certain point in the dump cycle, the bucket free-falls and waves back and forth. After keeping the dump lever held for a approximately five more seconds, the bucket completes the dump cycle. My interpretation is that there is a weakness in the system. My interpretation is reenforced when I get stuck in the muck and can't push myself backward. The bucket is limp and has no power to push the tractor. The loader is made with the tractor, in Korea.

 

[davidporter]

I have a 2012 mahindra 4010 and the steering wheel can be turned 360 degrees without the engine running. It feels like i have very little resistance ,again this is without the engine even running ,Does anyone know of a problem with the steering on these models?

 

[bbbmgo]

I have a 2012 mahindra 4010 and the steering wheel can be turned 360 degrees without the engine running. It feels like i have very little resistance ,again this is without the engine even running ,Does anyone know of a problem with the steering on these models?

Mine does that as well. My thinking is that because steering is only hydraulic (not like a car/truck that has a shaft that connects with hydraulic assist) it free-spins. In other words, it's normal ;-)