310C Auxiliary Hydraulics

I have a John Deers 310C with two hydraulic hoses coming out near the back hoe controls in the rear. They have female quick connect fittings on them. I have traced the hoses to an aluminum block mounted on the frame near the front of the right rear tire. This aluminum block has a flipper lever that seems to be a switch. I traced lines from the pump and the supply line runs up into the loader control area and then comes down into the top of the aluminum block. There is a large hose that also comes out of that block that goes straight to the controls of the backhoe. One of the hoses that comes out of this block goes straight to one of the hoses that has the quick connect on it. The other quick connect hose goes back to tie into the filter. I am assuming that this set up is for a breaker, clam arm, or compactor. I am trying to hook up a log splitter to the backhoe bucket so that I can spit wood and load at the same time. I bought a 3-point splitter and bolted it to the backhoe bucket then ran hoses from the auxiliary hoses to the splitter. The aluminum block flipper switch doesn"t seem to do anything and I can"t get more than a steady stream to come from either one of the hoses There is no high pressure. The flipper switch does not affect the backhoe, loader, stabilizers in any way. I thought that the quick connect hoses out the back would be to run something other than the backhoe. Is this aluminum block a priority valve? I looked in my repair manual on how the hydraulics are plumbed and it doesn"t show or refer to this aluminum block. I have the splitter control valve mounted on the rear panel near the backhoe controls.I have plumbed one quick connect to the inlet and the other to the outlet with the other two ports going out to the splitter. I have reversed the inlet and outlet thinking that I had them reversed but that changes nothing. Can anyone please shed some light on this subject. I can take some pictures if that would help.

Taking a shot in the dark here without seeing the tractor. Maybe try holding one of the hoe function levers in and see if the pressure doesn't come up on the auxillary fittings. Most of the auxillary valves I have seen on the 310's had a foot pedal on the floor to operate it.

Is the log splitter valve open or closed center????????

I believe that it is open center. I will check it out. The splitter was originally made to mount to a skid loader. I took it off the quick connect hookup and mounted it to the backhoe bucket. The valve has an automatic shut off on return but you have to maintain position on the valve for it to move the ram. There is an inlet port, an outlet port, and two other ports that I have hooked up to the cylinder itself. It doesn't seem to matter which position I have the valve in fluid flows out but with now pressure. I removed both of the hoses from the cylinder and both do the same thing. I put one end of the hose in a clean bucket and opened the valve and fluid ran out then I reversed the valve and it still ran out. If I don't have pressure will the fluid flow either direction through the valve? I thought that in one position the fluid should flow and on the other position the fluid would not flow. I have fluid flowing regardless of what position the valve is in except when it is in the center position and thus off. The splitter has hardly been used. I am wondering if I don't have multiple problems. First there is no pressure in the fluid at all coming from the tractor and then there is the problem with the valve. I hope I have clarified the situation. Any help you can give will be appreciated.

I have tried to move some of the hoe levers and at first the ram moved very slowly about 1/2" at a time in fits and starts and then wouldn't move at all. I have put the valve in the return position which will stay on until the ram returns and then moved all the hoe functions including outriggers and that changes nothing. I posted a reply to the valve situation earlier and there is info there about the valve. I almost believe that I have flow but no pressure and the reason the ram won't move at all is there is flow without pressure to both ends of the cylinder at the same time. Any help you can give would be appreciated.

The question of open or closed center is very easy to diagnose. Remove outlet(return) quick coupler from hose and direct hose into hyd reservoir or 5 gal. bucket. Crank engine if oil comes out of return hose it's an open-center valve and will not work correctly on an closed-center hyd system. You'll need a closed center valve unless your valve is a convertible style.

did you ever figure out what the valve with the lever was for? i recently got a 310c and there is the same thing on it with outlets but can not get anything to work just like yours, thanks for any information

Correction:According to Tractordata a JD 310C TLB has open center hyd's.

Can either one of the 310C owners post a photo of the hyd valve in question?

(quoted from post at 04:07:50 12/16/18)
Correction:According to Tractordata a JD 310C TLB has open center hyd's.

Can either one of the 310C owners post a photo of the hyd valve in question?

Click to expand...

will try, cold out today and not to handy with the camera. i have a parts book for the machine and see no picture of such a valve, thanks for reply

I would think it's closed center like the 400 because it uses a variable displacement pump. I could be wrong

(quoted from post at 22:17:57 12/17/18) I would think it's closed center like the 400 because it uses a variable displacement pump. I could be wrong

Click to expand...

Shown below is hyd pump utilized up to SN -748199 which is a gear type pump.

. Does the tractor appear anything similar to this ?http://www.tractordata.com/industrial-tractors/000/0/1/13-john-deere-301a.html

tried to get pictured of this valve thing with no success. it sets inside the frame just opposite of the hydraulic filter, just inboard and slightly aft of the hydraulic tank there is one large hose coming in to it and a medium size and a small one. this solenoid valve is approximately 7x5x2.5 inches thick with a lever that can be set for 3 different flow ranges, there appears to be a large hydraulic hose that looks like it is a return running towards the back and 2 smaller lines, one looks to be going rear and the other looks like it loops and go forwards. i have no help here and had the machine running with a hydraulic motor plugged in and tries a lot of different combinations of the running the controls for the hoe while the foot switch was engaged and with the lever of the valve in different positions. the motor would move but never fully rotate. after the day was through i did find that i had lost all my hydraulic oil and apparently the machine will not start with an empty reservoir. so will need someone to spot the leak for me as i operate the machine. apparently it only leaks when the switch is engaged so i might be making progress