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After I had removed the bucket from my 1025R yesterday I noticed that the two sides of the JDQA were not even so I attempted to move one of them by hand and noticed that, not only are they easily manipulated with little pressure but also that the opposite side responds in an alternate fashion to the pressure on the other. Another way, if I push the top of one link toward the tractor, the other link moves in the opposite direction. I've linked to a video at the bottom to get a better idea of what I mean.

I guess I am curious if A) this is normal behavior or B) this may be associated with the FBS/DBS symptoms a lot of guys are having? (thinking fluid moving past a valve it shouldn't be) I've only owned my machine for a month and used it only moving snow so far. I have noticed that there is a lot of play in the bucket, but haven't lifted anything heavy enough to note the drop when curling the bucket.

Would any of you guys that have had the SCV replaced have a moment next time you are working with your machine to take the bucket off and see if the behavior on your machine is similar or different?

I had the machine warmed up and about 1/4 throttle when doing this I believe.
1025R hydraulics HD - YouTube
 

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That's normal. The tilt cylinders are plumbed together, so when you push one cylinder in, that fluid pushes the other cylinder out. :)
Yup. Totally normal. If you look at the base of your JDQA shoes, you'll see horizontal timing rod that connects the base of the two shoes but allows a bit of slop for easy connecting of your attachment. If your shoes move to the opposite extremes, you may be missing a pin in your timing rod.
 

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I think what you are seeing is explained by the fact that the two cylinders are connected off the two arms of T's. One line comes from the valve, through the disconnects, then to a T, and then off each arm of the T sits one side of the cylinders (one on each side of the FEL). The other side of the cylinders gets run back through an identical setup all the way back to the other output from the valve.

If you are making the piston shorter on one side, then that pushes fluid out of the cylinder and it goes through the T to the other cylinder and tries to make that piston longer. The other side of the cylinder you are making shorter is sucking fluid, which also comes thru the T and has about the same effect.

I hope this explains the mechanics, but that is expected behavior from two actuators T'd together. The Floppy bucket implies either air in the lines or leakage across the valve. I tried disconnecting the QDs one time to see if that helped and it didn't, so I think the problem is air in the system. How it gets in there is a question for others much wiser in the ways of hydro than I. :)

- Hunter
 

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Discussion Starter #5
Sounds like I have nothing to be concerned about. I appreciate the feedback. Love this forum.:thumbup1gif:
 

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Sounds like I have nothing to be concerned about. I appreciate the feedback. Love this forum.:thumbup1gif:
Hey, don't listen to those screwballs, your machine is totally messed up and should be given to me ASAP to fix or it might blow up and kill little children and small pets!






































(Just kidding, perfectly normal as stated since the cylinders are plumbed in parallel.)
 

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Hey, don't listen to those screwballs, your machine is totally messed up and should be given to me ASAP to fix or it might blow up and kill little children and small pets!
This is why i love this forum so much... So much diversity. :lol:
 
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