FYI -
Removed the bucket level rod and it does the same, so it ain't that.
Removed the bucket level rod and it does the same, so it ain't that.
Help please ---- Problem with fast dump - chatter clatter........
2009 3520
Can not figure this out and am only assuming it's a hydraulic problem.
When I move the joystick FULL right I get an awful noise. Does not do it when just easing the joystick to the right in order to dump. Does not do it when moving stick to left to curl.
Just started doing out the blue. I had forks on and was prying on some palm tree roots. Was not using it like a backhoe so I don't believe I bent anything in any way.
Anyone ever experience this or have a clue what may be the culprip?
Everthing is greased, hydraulic oil level good.
Here's a couple videos of what I'm tryin to explain.
Can not figure this out and am only assuming it's a hydraulic problem.
When I move the joystick FULL right I get an awful noise. Does not do it when just easing the joystick to the right in order to dump. Does not do it when moving stick to left to curl.
Just started doing out the blue. I had forks on and was prying on some palm tree roots. Was not using it like a backhoe so I don't believe I bent anything in any way.
Anyone ever experience this or have a clue what may be the culprip?
Everthing is greased, hydraulic oil level good.
Here's a couple videos of what I'm tryin to explain.
1 - 20 of 26 Posts
Disconnect and reconnect all your loader hydro lines. Check them for torn/ missing O-Rings while you are at it.
Does it do it with the bucket?
Dave
Dave
I'll give it a try.Disconnect and reconnect all your loader hydro lines. Check them for torn/ missing O-Rings while you are at it.
yessir, see the bucket in the videos? LOLDoes it do it with the bucket?
Dave
Disconnect and reconnect all your loader hydro lines. Check them for torn/ missing O-Rings while you are at it.
I'll give it a try.
yessir, see the bucket in the videos? LOL
Disconnected, reconnected the 4 quick connects and still the same.
No leaks anywhere I can see.
No leaks anywhere I can see.
Can you determine where the sound is coming from? Is it from the loader valve, or from the bucket linkages?
Corkpuller, I'm not sure of the orientation of your bucket cylinders, but thinking pressure to the piston end loads the bucket and the rod end dumps. When the bucket "dumps", a large quantity of oil has to go someplace. This may (???) be overloading the relief valve in your control valve. The answer/solution is to slowly dump your bucket! Another option would be to install an orifice in the piston side piping of the bucket cylinders! Bob
That’s exactly what the fast dump regen mode is for.Corkpuller, I'm not sure of the orientation of your bucket cylinders, but thinking pressure to the piston end loads the bucket and the rod end dumps. When the bucket "dumps", a large quantity of oil has to go someplace. This may (???) be overloading the relief valve in your control valve. The answer/solution is to slowly dump your bucket! Another option would be to install an orifice in the piston side piping of the bucket cylinders! Bob
Both sides of the cylinder are pressurized, which causes the cylinder to extend, and at the same time, excess fluid from the rod end is pulled into the cap end. No fluid returns to tank.
It also keeps gravity from allowing the load to run away since the rod end is pressurized
The op says it just started doing it.
@Corkpuller are you sure your getting it all the way over to the regen position? Some models have a lock that prevents you from going into regen.
You may want to check that, but after watching the video…we’ll that sounds kinda bad😳
Trace out that noise.
You may want to check that, but after watching the video…we’ll that sounds kinda bad😳
Trace out that noise.
Thanks for y’all’s input.
I’m not really following y’all about this “regen” thing.
Regen to me is the newer machines with the emissions stuff.
I really have not used this machine much since I bought it. Just got it up here at our property Sunday. Been using the 1025r the past year up here. I don’t like my equipment sitting outside so the 3520 has been at home in the shop.
I did install an Artillian diverter setup for my grapple. After I got it all installed I did check everything out and played with it some back home. All worked as should and this clattering was not evident.
Seems to me like air in the system but I’m no hydraulics guru and these systems supposedly will purge or bleed themselves from what I understand.
If it ain’t ain’t air, or hydraulics related, then something seems to be in a helluva bind.
I’m not really following y’all about this “regen” thing.
Regen to me is the newer machines with the emissions stuff.
I really have not used this machine much since I bought it. Just got it up here at our property Sunday. Been using the 1025r the past year up here. I don’t like my equipment sitting outside so the 3520 has been at home in the shop.
I did install an Artillian diverter setup for my grapple. After I got it all installed I did check everything out and played with it some back home. All worked as should and this clattering was not evident.
Seems to me like air in the system but I’m no hydraulics guru and these systems supposedly will purge or bleed themselves from what I understand.
If it ain’t ain’t air, or hydraulics related, then something seems to be in a helluva bind.
Hydraulic Regen, not emissions Regen. It works as Arlen described when you push the stick all the way right. It's that little detent you feel when you push the all the way right.
Since this is happening when you push it all the way right into Regen, my money is on a failure in the loader scv.
Since this is happening when you push it all the way right into Regen, my money is on a failure in the loader scv.
What is "Regen" or the...
What is "Regen" or the "Regenerative" function of a FEL Valve? Read it here ;) 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...
www.greentractortalk.com
I read the sticky about "regen" for loaders.
This part below don't add up to me.
You have this regen function and then you keep it from working by locking it out? I don't get it.
So we add "regen" or "regenerative" function to the valve.
On most, if not all John Deere tractors there is a “lockout” the limits how far the joystick travels to the right to keep it out of the regen mode.
Not sure how this function would cause the problem I'm experiencing but I did some experimenting this morning.
I thought at first I may have felt somewhat of a detent when moving the stick to the far right but I don't know. It certainly does not have the same feel as when moving the stick to float mode. That definitely has a breakover or "detent" feel.
At low R's, from idling at 900 it will not make the racket. Go up to 2000 R's and it's happening but not consistent. I tried all RPM ranges and even tried with the loader lifted from low to high in different spots to see if there may be something binding at a certain point.
Got to where I was just chasing my tail. It doesn't do it all the time and certainly never does it while just easing the stick to the right to dump. But I have no clue if I am ever getting in to this "regen" mode or not.
How do I determine if there is this "lock" function? I mean what do I do or look for to know if my stick is getting locked or going past the lock, or if somebody done stole the key to my lock. LOL
lost as a goose
This part below don't add up to me.
You have this regen function and then you keep it from working by locking it out? I don't get it.
So we add "regen" or "regenerative" function to the valve.
On most, if not all John Deere tractors there is a “lockout” the limits how far the joystick travels to the right to keep it out of the regen mode.
Not sure how this function would cause the problem I'm experiencing but I did some experimenting this morning.
I thought at first I may have felt somewhat of a detent when moving the stick to the far right but I don't know. It certainly does not have the same feel as when moving the stick to float mode. That definitely has a breakover or "detent" feel.
At low R's, from idling at 900 it will not make the racket. Go up to 2000 R's and it's happening but not consistent. I tried all RPM ranges and even tried with the loader lifted from low to high in different spots to see if there may be something binding at a certain point.
Got to where I was just chasing my tail. It doesn't do it all the time and certainly never does it while just easing the stick to the right to dump. But I have no clue if I am ever getting in to this "regen" mode or not.
How do I determine if there is this "lock" function? I mean what do I do or look for to know if my stick is getting locked or going past the lock, or if somebody done stole the key to my lock. LOL
lost as a goose
Lockout and detent are two different things. On a lot of machines, there is a lockout contraption under the loader SCV that physically prevents the stick from moving far enough to the right. That locks out regen because some front mounted implements get angry with it. You may or may not have that lockout. And if you do, it may or may not be locked out. That thread about regen describes what to look for.
Detent is something you feel in the stick when moving in/out of the regen position. It should be a noticeable detent, identical to the detent you feel when going into float. The only difference is float locks the stick in, and regen doesn't lock the stick in (you have to hold it there). It's just a detent so you can feel it.
I'm assuming of course the 3520 has regen. It probably does since most do. If you're not feeling the detent, see if maybe the lockout is locked out down there. Maybe it's not fully locked out, so it's chattering on the edge.
Detent is something you feel in the stick when moving in/out of the regen position. It should be a noticeable detent, identical to the detent you feel when going into float. The only difference is float locks the stick in, and regen doesn't lock the stick in (you have to hold it there). It's just a detent so you can feel it.
I'm assuming of course the 3520 has regen. It probably does since most do. If you're not feeling the detent, see if maybe the lockout is locked out down there. Maybe it's not fully locked out, so it's chattering on the edge.
It should have a lock to prevent regen. it should be a lever below the joystick. Normally for loader work you would want to have it set to allow regen.I read the sticky about "regen" for loaders.
This part below don't add up to me.
You have this regen function and then you keep it from working by locking it out? I don't get it.
So we add "regen" or "regenerative" function to the valve.
On most, if not all John Deere tractors there is a “lockout” the limits how far the joystick travels to the right to keep it out of the regen mode.
Not sure how this function would cause the problem I'm experiencing but I did some experimenting this morning.
I thought at first I may have felt somewhat of a detent when moving the stick to the far right but I don't know. It certainly does not have the same feel as when moving the stick to float mode. That definitely has a breakover or "detent" feel.
At low R's, from idling at 900 it will not make the racket. Go up to 2000 R's and it's happening but not consistent. I tried all RPM ranges and even tried with the loader lifted from low to high in different spots to see if there may be something binding at a certain point.
Got to where I was just chasing my tail. It doesn't do it all the time and certainly never does it while just easing the stick to the right to dump. But I have no clue if I am ever getting in to this "regen" mode or not.
How do I determine if there is this "lock" function? I mean what do I do or look for to know if my stick is getting locked or going past the lock, or if somebody done stole the key to my lock. LOL
lost as a goose
I don't remember if you have a cab or not, but just put the lever in the unlocked position, then when you put the joystick in the extreme right it will regen.
Maybe your linkage is preventing you from going into engaging regen completely.
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Thanks men, I will look but I don’t believe my machine has no lock gizmo like pictured in Arlens post.
Hope it don’t because I’ll feel pretty stupid if it does.
I know most all late model machines have a safety lock to completely remove any joystick functions but that’s all I’m aware of on both my tractors.
I’ll also take a look at the linkage and see if anything appears angry under there.
I sure appreciate y’all taking the time to help.
Hope it don’t because I’ll feel pretty stupid if it does.
I know most all late model machines have a safety lock to completely remove any joystick functions but that’s all I’m aware of on both my tractors.
I’ll also take a look at the linkage and see if anything appears angry under there.
I sure appreciate y’all taking the time to help.
Those photos I posted were from a 3520 operator manualThanks men, I will look but I don’t believe my machine has no lock gizmo like pictured in Arlens post.
Hope it don’t because I’ll feel pretty stupid if it does.
I know most all late model machines have a safety lock to completely remove any joystick functions but that’s all I’m aware of on both my tractors.
I’ll also take a look at the linkage and see if anything appears angry under there.
I sure appreciate y’all taking the time to help.
Well butter my biscuit. What I thought was the lever to lock the joystick from any movement happens to be just as pictured Arlen. Reckon I never paid attention that the lever has 3 positions.
The center position shows a picture of a book. Not too helpful as my manual is back home.
Further troubleshooting and some education from y'all has me to this point:
1) What I call fast dump is the same as regen, I think.
2) Moving the lever to the center/book position allows all movement except the fast dump.
3) Lock position is just that, no movement.
4) The awful chattering, vibration only occurs when lever is in the unlock fast dump/regen position.
It also only happens at RPM's over 1700.
5) The chattering does not happen at any RPM in the center/book position.
6) Changing the lever positions appear to allow the stick to function as it should.
*** The problem only occurs at higher RPM's in the unlock/regen mode.
What is not working right to cause the problem is still the question.
Thanks
The center position shows a picture of a book. Not too helpful as my manual is back home.
Further troubleshooting and some education from y'all has me to this point:
1) What I call fast dump is the same as regen, I think.
2) Moving the lever to the center/book position allows all movement except the fast dump.
3) Lock position is just that, no movement.
4) The awful chattering, vibration only occurs when lever is in the unlock fast dump/regen position.
It also only happens at RPM's over 1700.
5) The chattering does not happen at any RPM in the center/book position.
6) Changing the lever positions appear to allow the stick to function as it should.
*** The problem only occurs at higher RPM's in the unlock/regen mode.
What is not working right to cause the problem is still the question.
Thanks
1 - 20 of 26 Posts
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