3 Point only raises less than halfway

[airborne24]

I have a 2016 B2650.
Changed out a leaking hose on the Front end loader. Replaced hydraulic filters and refilled. The tractor HST drives properly, FEL works normally, but the 3 point only goes up less than halfway.

Manual says to drive it for awhile to regain the power to the 3 pt lift. However, i have put several hours 10+ on it and it still hasn't purged the air.

Is there a method of purging any air from the 3 point system?
It doesn't seem likely to be an internal seal otherwise why would it raise at all?

If anyone has had this issue, any help would be greatly appreciated.

Thanks

 

[GreensvilleJay]

do you have any weight on the 3ph ? you need weight to push the oil back,reasonably fast to get the air out. Also pause a bit between ups and downs.

I recently replaced hose on my dump trailer, refilled, it went up 'hurky-jerky' a few times, got better after several cycles.

 

[TheOldHokie]

I have a 2016 B2650.
Changed out a leaking hose on the Front end loader. Replaced hydraulic filters and refilled. The tractor HST drives properly, FEL works normally, but the 3 point only goes up less than halfway.

Manual says to drive it for awhile to regain the power to the 3 pt lift. However, i have put several hours 10+ on it and it still hasn't purged the air.

Is there a method of purging any air from the 3 point system?
It doesn't seem likely to be an internal seal otherwise why would it raise at all?

If anyone has had this issue, any help would be greatly appreciated.

Thanks

Which hose on the loader? This does not sound like an air issue.

Dan

 

[airborne24]

do you have any weight on the 3ph ? you need weight to push the oil back,reasonably fast to get the air out. Also pause a bit between ups and downs.

I recently replaced hose on my dump trailer, refilled, it went up 'hurky-jerky' a few times, got better after several cycles.

I have run it long enough without any improvement in lifting range. Not sure that it will resolve by itself.

 

[GreensvilleJay]

what weight or implement did you have on the 3ph ?

 

[airborne24]

Which hose on the loader? This does not sound like an air issue.

Dan

It was one of the hoses that runs along the side of the loader arms. The loader functions normally.

Another symptom i forgot to mention in original post, the speed control knob for the three point doesn't have any effect on 3 point action.

 

[airborne24]

what weight or implement did you have on the 3ph ?

It has a land plane grader on it.

 

[TheOldHokie]

It was one of the hoses that runs along the side of the loader arms. The loader functions normally.

Another symptom i forgot to mention in original post, the speed control knob for the three point doesn't have any effect on 3 point action.

The hose is on the loader side of the valve and should not introduce air into the tractor side and even if it did that will purge itself very quickly.

The speed contol is for lowering speed only. Are you sure it does not change that?

What if antything else did you disconnect? Are there any quick couplers on the loader to tractor connections?

Dan

 

[jnschnit]

Have you checked the adjustment on the Feed Back Limit Arm? #30-50 on the attached image, it's under your seat on the right side. It sets the upper limit for the lift arms. I am also assuming you have checked the fluid levels.

 

[TheOldHokie]

Have you checked the adjustment on the Feed Back Limit Arm? #30-50 on the attached image, it's under your seat on the right side. It sets the upper limit for the lift arms. I am also assuming you have checked the fluid levels.

View attachment 90579

Feedback adjustment is a good suggestion.

Dan

 

[airborne24]

Have you checked the adjustment on the Feed Back Limit Arm? #30-50 on the attached image, it's under your seat on the right side. It sets the upper limit for the lift arms. I am also assuming you have checked the fluid levels.

View attachment 90579

Was busy with work last week and just got to look at this again over the weekend. Adjusting the nuts 050 on the feedback arm 30 allowed the 3 point to go higher. Thank you so much for pointing me to this. the speed control knob works now too. the remaining issue is that the 3 point doesn't want to start lifting until get to about the number "5" on the level position. i don't see a way to adjust when the level engages lifting the 3 point. Is there a way to do that?

 

[TheOldHokie]

Was busy with work last week and just got to look at this again over the weekend. Adjusting the nuts 050 on the feedback arm 30 allowed the 3 point to go higher. Thank you so much for pointing me to this. the speed control knob works now too. the remaining issue is that the 3 point doesn't want to start lifting until get to about the number "5" on the level position. i don't see a way to adjust when the level engages lifting the 3 point. Is there a way to do that?

That is normal and as long as you have full range of lift nothing to worry about.

Dan

 

[airborne24]

That is normal and as long as you have full range of lift nothing to worry about.

Dan

Why does that change over time? seems like there should be a way to adjust it. it appears to lift all the way again, but because the lift occurs between 5 and i think it goes up to 8. It has a higher sensitivity as the movement happens over a smaller movement. not sure why that would be. If that is just how it is now, I can just learn to live with it.

 

[TheOldHokie]

Why does that change over time? seems like there should be a way to adjust it. it appears to lift all the way again, but because the lift occurs between 5 and i think it goes up to 8. It has a higher sensitivity as the movement happens over a smaller movement. not sure why that would be. If that is just how it is now, I can just learn to live with it.

That's how my brand new L3901 works right from the factory. Spool travel in the valve determines "sensitivity" and that is not adjustable.

Dan