Loader GC2310 hydraulic issues...again!

[slb04786]

Look again at the link I provided above for the GC hydraulics. The backhoe valve is shown on that. But be sure to scroll down to the last post with the latest drawings. Those also show the loader lines albeit on your older model the coupler colors may vary.

I have looked back at your earlier threads on hydraulic problems and have refreshed my mind about "where we've been".

Good luck.

Dicktill,

Thanks. I had looked at your schematic of the hydraulics with loader and BH last night. Mine looks about the same but I was always under the impression that there was one pressure line to the BH from PB port and 2 return lines to the tank reservoir but looking at your schematic one line is a pressure line to the main control valve. I went to my local dealer and bought the “flow divider valve” they had in stock. I got to speak to a service person who has some familiarity with the GC2310 TLB. He told me those valve don’t go bad. He said the reason they had one in stock is probably because someone else thought they had a bad valve, ordered a replacement, and it wasn’t the problem. He said he would be looking at the hoses and coupling for the BH to be a problem. I bought their flow divider valve with the understanding I could bring it back if I didn’t install it. He said it was a head scratcher. I’ll let you know what I find when I get back to the tractor. 40 minute drive to my son’s house.

 

[Dmacleo]

He said he would be looking at the hoses and coupling for the BH to be a problem. I bought their flow divider valve with the understanding I could bring it back if I didn’t install it. He said it was a head scratcher. I’ll let you know what I find when I get back to the tractor. 40 minute drive to my son’s house.

this is why I asked about removing backhoe and checking hoses/connectors earlier. this happening while operating backhoe to load onto trailer is odd for sure.

 

[dicktill]

Yes, I am aware of the flow order. I was commenting the the main control valve/3pt spool will override or disable the flow to the FEL and BH. I way I know this is I was working on my lower lawn which is a little wet are and got too close to the ditch and the front of the tractor slid down the ditch. I had my BH on so I was using that to lift and pull my tractor back out of the ditch. In process of doing this I turned in the seat to the right and was operating the BH with my right hand. All of a sudden I lost hydraulics to the BH and FEL. I thought I had blown my hydraulic pump. Turns out I had hit the 3pt lift handle with my right leg which moves the main control valve. Once I returned the handle to its detent I got my external hydraulics back.

That is what I thought had happened Sunday when the hydraulics stopped working, But a quick check ruled it out. I am now leaning towards the flow divider given my test this afternoon. I will keep you posted on what I find. Problem is I am running out of days. I leave to go to Florida for the winter in a couple of weeks and need to get my camper winterized, closed up, and the Massey fixed.

I am befuddled about this event! It makes no sense to me considering the way that the loader, backhoe, and 3-point valves are plumbed. Is there any chance that something else happened? (color me confused)

Dicktill,

Thanks. I had looked at your schematic of the hydraulics with loader and BH last night. Mine looks about the same but I was always under the impression that there was one pressure line to the BH from PB port and 2 return lines to the tank reservoir but looking at your schematic one line is a pressure line to the main control valve. I went to my local dealer and bought the “flow divider valve” they had in stock. I got to speak to a service person who has some familiarity with the GC2310 TLB. He told me those valve don’t go bad. He said the reason they had one in stock is probably because someone else thought they had a bad valve, ordered a replacement, and it wasn’t the problem. He said he would be looking at the hoses and coupling for the BH to be a problem. I bought their flow divider valve with the understanding I could bring it back if I didn’t install it. He said it was a head scratcher. I’ll let you know what I find when I get back to the tractor. 40 minute drive to my son’s house.

Back to my "befuddlement", etc.: You've had this stuff taken apart previously. I think you need to trace all your lines against the factory or my schematic to be sure something isn't plumbed wrong.

Not to be spending your money, but I think you said that the control valve was no longer available. Perhaps you should invest in this one: Pardon Our Interruption.... He's been selling this stuff for 20% or more off, so make him an offer. Although it is for a GC 1720, it should be useable at worst with a bit of tweaking of fittings and such.

edit: have no idea why it labeled my link "pardon our interruption" but it does get you to the correct eBay listing. Gotta love computers ...

 

[oldnslo]

If he is getting no flow to the loader valve or backhoe highly doubtful problem is either one of those valves. The OP needs to determine why there is no flow coming to the loader flow. Looking at schematic the priority flow control block is the only valve in that circuit but again not sure how that block is drilled or machined.

Agree priority failure is typically spring fatigue or breaks or priority orifice plugs both of which should have some effect on steering. Not a commonly reported failure.

 

[WranglerX]

Would seem to me and my limited knowledge of hydraulic that looking at the whole system is sort of blinding the OP and others.... Sort of seeing the forest and not the trees..... IF you take each implement as a individual and going on premise "Power" (P) into valve block is correct and "Power Beyond" (PB) is correct and "Tank" (T) is correct ALL FROM PREVIOUS CORRECT OPERATION then problem is with one individual valve block or Quick Connect (QC), either at offending implements operation or maybe for some reason the PB to P connection to offending implement control is at fault.... Maybe a simplistic approach, but no different than troubleshooting electrical circuits or fuel system problems or the silly a$$ control valve on lawn/garden irrigation system....

Also maybe OPs diagnostic of what problem is may be at fault or how problem is being presented...... Might to be time to backup and star over to what actually is the problem...

 

[slb04786]

Back to my "befuddlement", etc.: You've had this stuff taken apart previously. I think you need to trace all your lines against the factory or my schematic to be sure something isn't plumbed wrong.

Not to be spending your money, but I think you said that the control valve was no longer available. Perhaps you should invest in this one: Pardon Our Interruption.... He's been selling this stuff for 20% or more off, so make him an offer. Although it is for a GC 1720, it should be useable at worst with a bit of tweaking of fittings and such.

edit: have no idea why it labeled my link "pardon our interruption" but it does get you to the correct eBay listing. Gotta love computers ...

Thanks for posting that! I made him an offer, we will see if he bites

this is why I asked about removing backhoe and checking hoses/connectors earlier. this happening while operating backhoe to load onto trailer is odd for sure.

Dmacleo,
Thanks for replying. I have taken your and the service techs advice and disconnected the BH hoses completely. Still no hydraulic pressure to the aux port, just power steering. I have the main hydraulic valve assembly off right now. I have removed all the plugs, pressure relief valve, flow control valve, and main valve. I have blown everything out with my compressor. We will trudge forward.
Thanks,
Stan

 

[slb04786]

Back to my "befuddlement", etc.: You've had this stuff taken apart previously. I think you need to trace all your lines against the factory or my schematic to be sure something isn't plumbed wrong.

Not to be spending your money, but I think you said that the control valve was no longer available. Perhaps you should invest in this one: Pardon Our Interruption.... He's been selling this stuff for 20% or more off, so make him an offer. Although it is for a GC 1720, it should be useable at worst with a bit of tweaking of fittings and such.

edit: have no idea why it labeled my link "pardon our interruption" but it does get you to the correct eBay listing. Gotta love computers ...

I have checked all of my hose connections to the loader and BH and everything looks ok per you hydraulic schematic with the loader and BH attached. I have also disconnected the loader and BH hoses with no change in symptoms. Definitely a head scratcher.

 

[oldnslo]

The question still is where do you have flow? If you remove excess flow line from priority flow control which is the supply for loader, backhoe, and 3 point is there any flow out that line? If yes can you install a flow control - needle valve on that line and see if flow stops if you try and build pressure? If you get flow and pressure at that point move to the next valve or connection and repeat.

since same pump feeds Steering and implements we can kind of presume the pump is good so based on that where is the fluid going since if pump is turning oil is going somewhere.

It is not the main relief since steering works.