Rear remotes

[dlg449]

I've looked at a lot of posts about rear remote hydraulics but haven't found what I need. I've got an L3200 with a FEL. I see a need for a single rear remote but want a second in case I need it in the future. I'm thinking a "Float" on one of them. Does anyone have pictures? Detailed instruction on where to tap the existing hydraulics? A parts list would be very helpful, also. What type of valve or spool? I've been working with hydraulics on tractors for 50 years but never installed any and don't really know the terminology related to valves, spools, etc. Any help will be much appreciated.
Dave

 

[TripleR]

Hydraulics are a mystery to me, if they don't show up check with JJ or MtnViewRanch, both very knowledgeable.

 

[MtnViewRanch]

I'll let JJ go into detail for after market. There are threads on TBN going into detail. I normally recommend OEM because they are usually a cleaner install. But apparently some of the std Ls are not quite as good as they should be IMO. I know that you can do a complete 3 spool with 2 float function setup for about 60% of what it would cost to do a 2 spool OEM setup.

I need to get back to work, I will check back later.

 

[J_J]

Here is your hyd data.

Hydraulics:
Type: open center
Capacity: 7.3 gal [27.6 L] (gear)
6.2 gal [23.5 L] (hydro)
Pump flow: 6.5 gpm [24.6 lpm]
Total flow: 10.5 gpm [39.7 lpm]
Steering flow: 4.0 gpm [15.1 lpm]

Here is a suitable two spool valve with float.

Surplus Center - 2 SPOOL 8 GPM PRINCE MB21GB5C1 DA VALVE W/FLOAT

PB kit.

http://www.surpluscenter.com/item.asp?catname=hydraulic&item=9-7867-B

You need to find the pressure line that feeds the 3pt, and add the two spool valve in series with that line.

The feed line will go to the IN port of the new valve.

The PB adapter must be used in the PB port and that output will feed the 3pt.

The OUT port of the valve will go to a tank line.

 

[J_J]

Below is a pic of the hyd block for the L3200 hyd block.

Line 010 is the supply line you need to cut and install swage fittings and connect to the IN port of the new two spool valve.

Line 170 is the return line you need to cut and install swage fittings and install a tee for the OUT line from the two spool valve.

Line 070 from pump will feed the hyd block.

PB port connects to the cut line 010 to the 3pt.

The series path is now complete.

The tractor relief is on the bottom of the hyd block and this will set the tractor pressure.

Re-check the master relief valve for correct pressure and set the new valve the same.

I discarded wrong picture and inserted new pictures.

 

[dlg449]

I'll let JJ go into detail for after market. There are threads on TBN going into detail. I normally recommend OEM because they are usually a cleaner install. But apparently some of the std Ls are not quite as good as they should be IMO. I know that you can do a complete 3 spool with 2 float function setup for about 60% of what it would cost to do a 2 spool OEM setup.

I need to get back to work, I will check back later.

Thanks for the help. JJ sent details. I'm on a job near Ft Worth but I'm going to order the parts and hope to get finished Easter weekend while I'm home

 

[dlg449]

Below is a pic of the hyd block for the L3200 hyd block.

Line 010 is the supply line you need to cut and install swage fittings and connect to the IN port of the new two spool valve.

Line 170 is the return line you need to cut and install swage fittings and install a tee for the OUT line from the two spool valve.

PB port connects to the cut line 010 to the 3pt.

The series path is now complete.

The tractor relief is on the bottom of the hyd block and this will set the tractor pressure.

Re-check the master relief valve for correct pressure and set the new valve the same.

Great detail! Thanks for all the information. I'm working near Ft Worth but get home a couple of times each month. I'm going to order the parts you suggested and hope the arrive in time to install Easter weekend. Thanks once again for the help
Dave

 

[dlg449]

Great detail! Thanks for all the information. I'm working near Ft Worth but get home a couple of times each month. I'm going to order the parts you suggested and hope the arrive in time to install Easter weekend. Thanks once again for the help
Dave

I forgot to mention that this tractor is hydrostatic drive. Does that make any difference?

 

[J_J]

Let me regress here and say that I don't know how someone did your FEL valve, but looking at the plumbing, the remote has to be inserted before the 3pt.

They may have cut into the line and inserted a FEL valve, and they may have used some ports on the hyd block.

Can you show a picture of your hyd block?

In general, the remote can go anywhere in the series path, as long as the PB from the upstream valve feeds the next valve.

The first valve or hyd block that sees the pump fluid, may have the master relief valve, and on this tractor, it is in the hyd block.

So now, you will have 3 relief valves.

Main relief at hyd block.

FEL relief.

Remote valve relief.

The 3pt would have used the main relief on the hyd block before any attachments.

So what is going to happen now is that the remote relief will see the first relief upstream on the remote valve and pressure from the 3pt will be relieved.

 

[Leejohn]

This picture is not mine, it's from someone here on TBN, can't remember who. See if your loader hooks up like this. If so you don't need to cut any hard lines.

 

[dlg449]

This picture is not mine, it's from someone here on TBN, can't remember who. See if your loader hooks up like this. If so you don't need to cut any hard lines.

Leejohn,
I'm on a job in Texas right now and the tractor is in Oklahoma. From memory, I think that's it. I know the FEL plumbing is in that location but may not be exactly as pictured. Is there any difference in hydraulic pressure between the location in the photo and the 3-Point? T-ing is better than cutting if the pressure is the same. Thanks for the reply.
Dave

 

[J_J]

Pressure is achieved by the component using the fluid.

You should not tee a pressure line except in a closed center hyd system.

The same fluid will flow through all valves in a continuous path from pump to tank.

I believe your hyd block is different.

That hyd block appears to use flow/pressure in from pump , a PB line from FEL, and an OUT line.

The original hyd blk was only used to pass fluid to the 3pt.

The hyd block adapter modifies the original path to go from pump to FEL, back to hyd blk, then to 3pt.

If there is a hard line between the hyd blk and the 3pt, you will have to cut it to insert the remote valve unless you can find some adapters for a banjo fitting.

 

[J_J]

Referencing the pic of the hyd block, you could remove the PB line from the FEL and add a new line to the IN port of the new valve.

The PB from the new valve would connect to the hyd block.

The OUT line can connect to any return hose to tank.

No cutting necessary.

First pic is just to show the hyd blk without the adapter added.

Similar pic shows details.

 

[dlg449]

Referencing the pic of the hyd block, you could remove the PB line from the FEL and add a new line to the IN port of the new valve.

The PB from the new valve would connect to the hyd block.

The OUT line can connect to any return hose to tank.

No cutting necessary.

First pic is just to show the hyd blk without the adapter added.

Similar pic shows details.

J_J
Thanks for the reply. I'll see if my son has time to run out to my place and take some pictures. I don't have a clue about open center and closed center or the different uses. I think what you're telling me is:
1 take the line from the pb on the FEL valve to the inlet of the new valve.
2 the pb goes to the block where the pb from the FEL went originally
3 the outlet on the new valve would return to the tank

How about the outlet on the FEL valve?

 

[J_J]

The PB from the new valve should return to the hyd block if it looks like the picture.

FEL out line is going to tank if the adapter blk looks like the last pic I posted.

The OUT or return lines can all be teed together.

Will have to see your pic of hyd blk to advise more.

If you have to cut and swage, it is not difficult at all.

Excerpts

Open center circuits use pumps which supply a continuous flow. The flow is returned to tank through the control valve's open center; that is, when the control valve is centered, it provides an open return path to tank and the fluid is not pumped to a high pressure. Otherwise, if the control valve is actuated it routes fluid to and from an actuator and tank. The fluid's pressure will rise to meet any resistance, since the pump has a constant output. If the pressure rises too high, fluid returns to tank through a pressure relief valve. Multiple control valves may be stacked in series [1]. This type of circuit can use inexpensive, constant displacement pumps.

Closed center circuits supply full pressure to the control valves, whether any valves are actuated or not. The pumps vary their flow rate, pumping very little hydraulic fluid until the operator actuates a valve. The valve's spool therefore doesn't need an open center return path to tank. Multiple valves can be connected in a parallel arrangement and system pressure is equal for all valves.

 

[dlg449]

J_J,
My son is not able to get out to my place to take photos. I'll be home Friday night, I hope. I'll try to upload sometime Saturday. Tying in at the rear 3-point would simplify routing the hoses bue I don't know how to swage the tubing. What tools are required? I'm comfortable sweating a fitting or using a ferrel type fitting if either would take the pressure.

 

[dlg449]

Thanks for the explanation re open and closed

 

[J_J]

I may have used the wrong terminology for the cut line fittings.

They are called compression hyd tube fittings. Flareless.

Flareless Compression Tube Fittings > Discount Hydraulic Hose.com

If you are not capable, take them to a hyd shop and mark the spot and tell them what fittings you want.

I talked with the hyd tech at a Kubota dealership, and the last picture in post #13 is what your adapter should look like.

It is actually a matter of choice.

If you cut, you will have two fittings and three short hoses.

If you use the PB from the FEL, you will have two longer hoses and fittings, and a short hose to a tank line.

 

[dlg449]

I don't have a problem with compression fittings just wasn't sure that was what you meant. Thanks for all the help
Dave

 

[Paul Thornton]

Would all of this also apply to my L2800 with FEL and HST?

L2800 w/FEL - 72" Land Pride rake