Loader GC2310 hydraulic issues...again!

[slb04786]

As always you are correct, it is a priority flow control, although the factory service manual calls it "flow dividing valve". The steering valve gets 7.5 liters/min, and the implement flow is 16.5 or 18.7 liters/min depending on whether it is the 23 or 25 horsepower model.

That is good to know. As I said in another post I took the pressure spring out of the priority flow valve, reassembled and then I had pressure at my loader valves and BH.
Thoughts?

 

[dicktill]

Thanks for the reply. I have taken the pressure line off at the loader valve and got no flow when the tractor is running. I moved back to the block at the top of the main hydraulic control and got no flow there. Which stands to reason this is the block with piping that goes to the loader pressure hose. I put a gauge on the port near the power steering pressure hose and got 1200# with the steering turned far left or right. Overnight I looked the hydraulics schematic over and concluded it was either the flow control valve or the main hydraulic valve. This AM I started with the flow control because you can get it out without taken the whole valve body off the tractor. There is what appears to be some sort of pressure control or relief spring that controls a plunger that slides back and forth inside the flow control valve. This isn’t shown on the parts list. I took the spring out so the plunger was free to move back and forth. I reinstalled it, started the tractor and then I had hydraulics to the BH(I have the FEL hoses disconnected because the bucket is tied up to prevent it dropping down and dragging). I still didn’t have 3pt lift so that confuses me somewhat. I am leaning towards the flow control but would like to verify for certain. Anythoughts? I have my pressure gauge on the left side near the PS pressure line and I am only seeing readings from the PS. I need to get on the main pump port to verify full hydraulics pressure. Thanks guys!

<snip>

I do know the main hydraulic valve controls the flow to the 3 pt lift and hydraulics. You have no hydraulics when you are operating the 3pt handle. And that is the main hydraulics spool valve in that assembly under your seat. Ask me how I know.

Thanks for your valued input.

Yes, but in the opposite order: loader, backhoe, then 3-point. Have you looked at: How Massey Ferguson GC 1723 & 1725 hydraulics are plumbed?

" Ask me how I know." Please explain.

That is good to know. As I said in another post I took the pressure spring out of the priority flow valve, reassembled and then I had pressure at my loader valves and BH.
Thoughts?

Photos please! Have you taken out the pressure relief valve? It may have some crud in it.

Do you have the factory service manual?

 

[oldnslo]

Slb
How many hoses connect between the back hoe and tractor? Reason for asking is that some models do not allow the 3 point to work with the back hoe installed.

Can you post the hydraulic schematic that you have. It might help with potential doagnosis.