Puking hyd fld out of dip stick tube

[North Idaho Wolfman]

Would 303 contaminate the system ? Should it need a flush ?

Just a full system drain and filter change would do the trick.

I would suggest to the OP if he wanted to save some money and still be safe to use Mystik JT5 or any other good quality UDT compatible fluid.

 

[OlFerguson]

I don’t know what the cost would be like but shell s4 txm is compatible with kubotas UDT standards. I’m sure there are a few out there you just have to research. Hopefully you get it resolved before dumping 3-400$ worth of udt in your tank.

 

[Ken1945]

It has a filter screen on each side witch have been cleaned,I also wondered about the inside of the screens because you cannot see in them,it has one screw on filter on left side of tractor if your setting on tractor for the 303 this is the only time it has been it,I'm going to drain it out,just trying to find the problem,wolfman I will get some pic,of the fel lines may be a few days I'm not where the tractor is now ,thanks for you help

 

[Ken1945]

Is this the pictures you’re asking for.

 

[North Idaho Wolfman]

Is there only the 2 lines off of the valve (Besides the 4 loader lines)?

 

[Ken1945]

Wolfman my son took the pic,two lines comes out of Hyd block on tractor the red tape marks one line where they are hooked up,I drained all the 303 out got s udt to put back in cleaned the screens ,I can see the coil spring inside the screen they look clean but who knows,I forgot to tell about two weeks ago the box for the joy stick on fel was so hot it would about burn your hand,and another question how to get knob off of pto adjuster front of seat I can't get to move is it threaded or splined ,and the screen in front of radiator has been cleaned

 

[North Idaho Wolfman]

If there is only 2 lines you have a FEL spool valve that is;
1: not plumbed properly
or
2: not the right spool valve for the tractor.

There should be a third line called the tank line.

PTO Adjuster?
Round knob?
That would be the three point fall rate adjuster, it just pulls off, heat it up with a heat gun or a hair dryer on high heat if it's stuck.

 

[torch]

I forgot to tell about two weeks ago the box for the joy stick on fel was so hot it would about burn your hand,

That doesn't sound right. How long and how hard had you been using the machine when this happened?

 

[Ken1945]

That doesn't sound right. How long and how hard had you been using the machine when this happened?

Not very maybe 30 min.

 

[torch]

Not very maybe 30 min.

Hydraulic fluid will heat up as it is worked and pressurized. But an open centre valve should have a constant supply of fresh fluid flowing through it, keeping it close to the temperature of the oil in the tank.

As Wolfman points out, there should be a third line. I wonder if someone has plugged the Power Beyond port and ran the Tank port back to the hydraulic block. If that was the case, then the fluid would be under constant high pressure against the relief valve when the controls are in neutral. That might explain the high temperatures at the control valve.

Is this a Kubota FEL and control? Or aftermarket?

 

[Ken1945]

Aftermarket

 

[torch]

I think Wolfman has hit the proverbial nail on its head. It sounds like the previous owner (all blame shall always fall upon the Previous Owner -- it's a cardinal rule of the internet ) did not correctly understand how an open centre system works.

I would start by identifying the control valve set -- try and determine the make and model and then do some research to see if it has "Power Beyond" capability, if it needs a special adapter to convert to PB function, etc. Then obtain said adapter and re-plumb things correctly. IE: leave the supply line from the hydraulic block as is, plumb the PB port back to the hydraulic block and add the third line from the Tank port to the tank.

I can't guarantee that will solve your puking dipstick issue, but I'm pretty sure it will extend the life of your fluid and probably save you from future damage to components.

 

[Ken1945]

Another question,on this b2710 it has 2 screen filters one on each side,they look the same ,are they the same,they will enterchange,but are they different,does one go on one side and the other on the other side if so how do you tell them apart,thanks

 

[torch]

A quick look at the Kubota parts website says they are different. I know on my tractor, the HST screen is finer (5 microns?) than the hydraulic suction (15 microns?). Yours may be the same, but I don't know for sure.

 

[Ken1945]

They look the same,i try to put them back from where I got them ,but they could have been mixed up before I got the tractor,I think I saw somewhere where they had a different number,if so they are not the same ,so I don't know if I have them in the right place or not

 

[torch]

Ok, looking again I may be full of crap. Looks like there were some changes and it depends upon your serial number.

IF your serial number is below 15496 then they are both the same --
part number 6602136390

If your serial number is above 50101 then you don't have one for the hydraulic suction, you have a cartridge filter instead. Part number 6795537710.

Darned if I know what happened to serial numbers between those two.

 

[Ken1945]

Torch ,thanks for the info,I cleaned the screens about 6 months ago,and it quit puking the hyd fluid out for awhile,thought that was the problem ,but started it again,cleaned them again ,this time didn't help

 

[North Idaho Wolfman]

Your tractor is the first version of that model, it has 2 filter screens that are the same, and one HST spin on filter.

I'm pretty sure your foam issue is the FEL spool valve or the FEL spool valve piping.

 

[torch]

the HST screen is finer (5 microns?) than the hydraulic suction (15 microns?).

And I was wrong about that, too. I did some digging and here is some useless trivia:

My hst screen is 0.005", which works out to 127 microns. My hydraulic screen is 0.01066 inch, which works out to 270 microns.

Your two screens have the same part number as my hydraulic screen.

 

[Russell King]

Is there a way he can plumb the lines to bypass the valve and see if that fixes his problem? Then he will know that is the problem.

May be more trouble than it is worth if it can’t hold up the loader


Sent from my iPad using Tapatalk