Load sensing problem.

[hang-on]

The check valve will be in the direction to the tractor. From memory so ball can open to flow towards tractor. You'll soon know as the power beyond wont work at all.

Tried this all out this afternoon and no joy, adjusted the ls screw and made no difference so I'm point more towards it being a fault with the baler. I'm just going to have to put it back to normal and work away as we'll be going this week I'd say.

 

[Tractortech]

Now Then..
Have you taken the check valve out of the baler LS line??

 

[hang-on]

No I didn't do that but I could try it alright I suppose.

 

[Tractortech]

Now Then..
I'd take it out and put it to one side... Have you anything else to hand that uses LS to try,,,, see if the tractor is right??

 

[hang-on]

A few posts back I'd said about trying it on my cousins claas baler and it worked that ok all be it slowly. So I'd be pretty sure that the tractor is ok.

 

[James]

A few posts back I'd said about trying it on my cousins claas baler and it worked that ok all be it slowly. So I'd be pretty sure that the tractor is ok.

The fact that you say it worked it slowly would worry me to thinking that things aren't 100% with the tractor tbh.
have you tried one of your cousins tractors on your baler?

 

[hang-on]

Now Then..
I'd take it out and put it to one side... Have you anything else to hand that uses LS to try,,,, see if the tractor is right??

Took it out and made no difference, I'll have to try one of the cousins tractors on our baler @James to see if it makes any difference, but I tried one of our other tractors on it here but it had same symptoms as the new tractor.

 

[NZ Tech]

If you have access to pressure gauges you can set up a tool to ramp the power beyond in and out of stroke... Pretty simple all you need is a hose.

 

[hang-on]

I have a pressure gauge alright, have it piped up for testing 1/2 inch outlets at the minute, how do I test the power beyond?

 

[NZ Tech]

Plumba hose with a tap from the P port(pressure) to the LS port. Close the tap, fit the pressure gauge into the system pressure DR which is the bottom dr located on the steering valve at the rear of the tractor. Start the tractor and watch the gauge as you open the tap- it'll raise up and down with pressure as you open the tap and down slowly as you close the tap. If you are getting 2950psi when the taps open then Id say the PB is working fine on the tractor.

 

[hang-on]

Plumba hose with a tap from the P port(pressure) to the LS port. Close the tap, fit the pressure gauge into the system pressure DR which is the bottom dr located on the steering valve at the rear of the tractor. Start the tractor and watch the gauge as you open the tap- it'll raise up and down with pressure as you open the tap and down slowly as you close the tap. If you are getting 2950psi when the taps open then Id say the PB is working fine on the tractor.

I'm being a pain but could you take a picture and point to the ones I need to tap into? I know which ones the ls and pressure ones and but the dr one to do with the steering I don't know which one that is. tia

 

[DrDunc]

Although it's slower than your think it should be on your cousin's baler, it is working.

Your kuhn bio hasn't proven to work on load sensing on any tractor yet.

Don't spend too much more time fiddling with the tractor until you've had the baler working on a tractor that you know has working load sensing.

It could be that the baler has been altered from open centre to be plumbed for power beyond pass through instead of load sensing?

(I like the concept of the kuhn bio, but there isn't anyone over here running one for me to see it working, or find out what breaks!)

 

[hang-on]

Although it's slower than your think it should be on your cousin's baler, it is working.

Your kuhn bio hasn't proven to work on load sensing on any tractor yet.

Don't spend too much more time fiddling with the tractor until you've had the baler working on a tractor that you know has working load sensing.

It could be that the baler has been altered from open centre to be plumbed for power beyond pass through instead of load sensing?

(I like the concept of the kuhn bio, but there isn't anyone over here running one for me to see it working, or find out what breaks!)

I do get on well with mine I must say, I will have to convert it back to normal so not to muck anything up. All we have had to do on ours was bearings in the bottom rollers which wasn't a big job really.

 

[NZ Tech]

The drs are under the top link bracket with Little covers on them. The bottom one is system pressure. You might as well do the test just to make sure everything is working correctly. Would hate for this to be a lingering problem or stop you from using the pb at all.

I'm being a pain but could you take a picture and point to the ones I need to tap into? I know which ones the ls and pressure ones and but the dr one to do with the steering I don't know which one that is. tia

 

[windymiller]

Any news how you got on with this? Have exactly the same problem on a 6910 with a pottinger forage wagon. @NZ Tech

 

[njneer]

Inthink your problem is that you are tapped into the common LS gallery.
Each spool slice has a "dime " valve to divert the LS signal to the pump.
The way you have it piped any LS signal coming in from the baler is coming into th common gallery and bleeding to tank.
A quick test for this is to dead end a spool and see if the baler works although it will work at the maximum as a dead ended spool will put the pump on full stroke with full flow at 205 bar but will tell you the baler is working.
I think you need a special end plate , the triangular end blank plate on the right hand end of the spool block with its own dime valve and Ls outlet to the pump.
If I recall we used to fit these when fitting loaders the LS pipe was reoved from the rear of the spool block and fitted onto the end slice with the original outlet blanked off.
I should add it was a long time ago.

Or thinking about it again it may be that if this type centre section already has a "dime" valve between the slices for the power beyond that it is stuck open leaking the LS signal to tank , again dead ending a spool would be a good check.

 

[Jd6900 evans]

I have the same problems but John Deere 6900 and jd 740A loader
My works but does not stop pumping oil if loader not in use , everything is pipeed correct way
I have load sensor plate on left side and pressure on left side of rock shaft spool block and return on the right side of the block
Any ideas? Please

 

[Martin Holden]

Our planter can switch from LS to OC, involves screwing a valve on the block to change the valve block from open centre to closed

Correct. There will be a valve on the Baker you have to adjust when LS is deployed.

 

[Jd6900 evans]

What is baker?have you got any pictures?

 

[Galcam]

We’re u running the Taarup bio Baler in non load sensing mode previous to this? I have had two of those balers and had to install the conversion kit into the valve chest on the Baler including running a 3/8 layers hose to the tractor. We then had to adjust via the valve chest on the Baler the oil flow to open /lift the door, rotate the wrapper etc. I remember we ran it on a 6030 SLE with a loader and we used to t into the load sensing line on the loader and on a t7200 NH range command. Happiness was the taarup bio in the rear view mirror and I don’t mean it hooked behind mind!! I suppose u could go back to non load sensing and constant pumping to get going if needs be.