2520 Power Beyond Plus - Machine Underground -Tractor & Commercial Equipment Discussion Forum

lincolnvt · 03-15-2008, 08:27 AM

Hey guys,
So, just completed my latest hydraulic project on the good ole JD 2520. I had already added two rear remotes for the T-N-T but wanted to have full Power Beyond for a log splitter project. I ordered the power beyond sleeve from Surplus Supply for the valve and carried the hose behind the seat to the jump hose supplied with the original power beyond kit I had purchased from JD. Next I disconnected the return to tank line from the rear remote and added a tee fitting from discount hydraulics so that both the remote and power beyond circuit would feed to tank. A bit of a tight fit but it worked out in the end. Now, I can disconnect the quick connect in the back of the tractor and send full flow to another valve - in this case it will be mounted on a log splitter. I did put a zip tie on the rear remote QC b/c if it was uncoupled the pump would dead head....not good. If anybody as questions feel free to ask away.

Cheers,
Brad

Dougster · 03-15-2008, 11:17 AM

Quote:

Originally Posted by lincolnvt

Hey guys,
So, just completed my latest hydraulic project on the good ole JD 2520. I had already added two rear remotes for the T-N-T but wanted to have full Power Beyond for a log splitter project. I ordered the power beyond sleeve from Surplus Supply for the valve and carried the hose behind the seat to the jump hose supplied with the original power beyond kit I had purchased from JD. Next I disconnected the return to tank line from the rear remote and added a tee fitting from discount hydraulics so that both the remote and power beyond circuit would feed to tank. A bit of a tight fit but it worked out in the end. Now, I can disconnect the quick connect in the back of the tractor and send full flow to another valve - in this case it will be mounted on a log splitter. I did put a zip tie on the rear remote QC b/c if it was uncoupled the pump would dead head....not good. If anybody as questions feel free to ask away.

Cheers,
Brad

Hi Brad - I'm wondering if your mods have some relevance to my backhoe powering issue. Right now my Bradco 509 is powered from one of two rear remote sets on the back of my Mahindra 4110. The remote sets are fed from the power beyond connection on my FEL control valve and dump to the tank when in use. Otherwise, the flow continues on to the main (3-pt) control valve. The remote set that's used for the Backhoe must obviously be latched open to power the backhoe.

I've been told that a new line completely bypassing the FEL control valve and rear remote set valve would power the Backhoe better. Indeed, this is Bradco's standard recommendation... although it is not clear how much I am losing by allowing the flow to go through the FEL control valve and remote set valve first. Some say a lot. Some say very little. The debate right now is whether or not to try a direct feed line... or give up and go to a PTO pump which would be dedicated to the backhoe only... the latter having the advantage of better control of pressure and flow. The direct feed line would not be an easy thing to add at this point because I have already added that second rear remote set... reducing available coupling & loop mounting space considerably.

I guess I am indirectly asking why you felt that the log splitter needed it's own dedicated connections rather than using one of the rear remote sets in latched mode. And if you felt that wouldn't work well, how much speed and/or power do you believe was achieved by adding the new direct feed line?

Dougster

**gunmaker** · 03-15-2008, 07:28 PM

Brad, I've got power beyond on my 2520, and always thought I could hook up a log splitter directly to that. Am I missing something?

lincolnvt · 03-15-2008, 10:54 PM

Not missing anything - I have the power beyond to the valve with two remotes. I wanted to continue the power beyond through the valve so I could take it off the back of the tractor to the splitter. Just a more involved hydraulic circuit that is all.

Brad

Dougster - I will get back to you on your questions when I have some time.

**Kennyd** · 03-16-2008, 07:55 AM

Quote:

Originally Posted by Dougster

Hi Brad - I'm wondering if your mods have some relevance to my backhoe powering issue. Right now my Bradco 509 is powered from one of two rear remote sets on the back of my Mahindra 4110. The remote sets are fed from the power beyond connection on my FEL control valve and dump to the tank when in use. Otherwise, the flow continues on to the main (3-pt) control valve. The remote set that's used for the Backhoe must obviously be latched open to power the backhoe.

I've been told that a new line completely bypassing the FEL control valve and rear remote set valve would power the Backhoe better. Indeed, this is Bradco's standard recommendation... although it is not clear how much I am losing by allowing the flow to go through the FEL control valve and remote set valve first. Some say a lot. Some say very little. The debate right now is whether or not to try a direct feed line... or give up and go to a PTO pump which would be dedicated to the backhoe only... the latter having the advantage of better control of pressure and flow. The direct feed line would not be an easy thing to add at this point because I have already added that second rear remote set... reducing available coupling & loop mounting space considerably.

I guess I am indirectly asking why you felt that the log splitter needed it's own dedicated connections rather than using one of the rear remote sets in latched mode. And if you felt that wouldn't work well, how much speed and/or power do you believe was achieved by adding the new direct feed line?

Dougster

Doug,
I assume there was discussion of you remotes on TBN, but I missed it... What problems do you have, or think you have powering the remote from your remote?
Maybe we should start a new thread?

**Kennyd** · 03-16-2008, 07:56 AM

Quote:

Originally Posted by gunmaker

Brad, I've got power beyond on my 2520, and always thought I could hook up a log splitter directly to that. Am I missing something?

You certainly can add the splitter to your PB circuit...

Dougster · 03-16-2008, 10:50 AM

Quote:

Originally Posted by Kennyd

Doug, I assume there was discussion of you remotes on TBN, but I missed it... What problems do you have, or think you have powering the remote from your remote? Maybe we should start a new thread?

Hi Kenny - I did start a loosely related thread on TBN back in October, but it didn't really answer anything. And the remote sets themselves work just fine. My issue is really quite simple and I had thought Brad's post went straight to the heart of it: Namely, how much does one lose powering anything via a rear remote set vs. running an independent set of lines & connections?

I'll let you guys decide if this question warrants a separate thread.

Dougster

**Kennyd** · 03-16-2008, 11:29 AM

As long as the remote valve can deliver the GPM the BH needs to properly operate the hoe then nothing is lost. Now you could argue that the fluid flowing through he valve and extra QD's can build up a little more heat and parasitic loss but I don't think it would amount to much at all in the way of performance.

BUT-Don't worry anyway, once you get that mini-ex you can sell your backhoe

Dougster · 03-16-2008, 12:26 PM

Quote:

Originally Posted by Kennyd

As long as the remote valve can deliver the GPM the BH needs to properly operate the hoe then nothing is lost. Now you could argue that the fluid flowing through he valve and extra QD's can build up a little more heat and parasitic loss but I don't think it would amount to much at all in the way of performance.

Well, that is the question. Obviously, unless the assorted control valves are leaking internally or externally... and assuming the pump is working properly... flow (GPM) should not be affected. But delivered pressure at full flow is a whole 'nother matter and that's the issue that most affects backhoe digging power. The flow takes some pressure drop traveling through the tractor's plumbing and takes most of that pressure drop going through control valves and fittings. The fewer control valves and fittings the flow sees, the better. The only question is how much does pressure drop and how much does that drop affect operation in a practical sense. Some say very little... and some say a lot. Reports and numbers I've been given are all over the place... and hence my request for Brad's perspective on what he feels he gained.

Quote:

Originally Posted by Kennyd

BUT-Don't worry anyway, once you get that mini-ex you can sell your backhoe

The 509 will never get sold no matter what I buy (other than an upgrade 511?)... but you are right: There is little point to me messing around with the 509's plumbing if I manage to find and buy a suitable mini-ex. But at this point, my mini-ex shopping is not going well and I am tending to focus more on full-size backhoes where the market for buyers seems somewhat brighter.

Dougster

lincolnvt · 03-16-2008, 04:30 PM

Dougster,
I am happy to have this discussion as part of this thread. I agree with Kenny that as long as the fittings and hoses are appropriate for the flow there shouldn't be a great deal of loss running the fluid through a valve or even multiple valves. I have checked my pressures with a pressure gauge i have connected to a short hose and quick connect and they are all on spec. The only reason I set mine up the way I did is because I want the two remotes to run my T-N-T and I had the fittings and hoses for the true power beyond from JD. Therefore, I decided to make full flow available to the rear of the tractor through the power beyond sleeve installed on the rear remote valve so I could run hoses to my log splitter valve and not have to mess with the rear remotes at all. It was just a cleaner set up for me...

Brad