Help with log splitter

hwatkins · Apr 3, 2015

I built a three point hitch log splitter, the detent is supposed to operate the B Port. I have the B port hooked up to the lower part of the cylinder, which should cause it to retract, but instead it causes it to extend. The other issue is the valve is supposed to have a rapid extend feature, but when I try to engage that the ram sputters, like it can't decide if it should move up or down.

I've gone over the hookups but can't see an issue. I've attached some pictures to show the hookups. Any ideas on ways to troubleshoot?

Prince Model LS3060 Rapid Extend Log Splitter Valve
Prince PTO HC-PTO-2AC Pump

Ed of all trades · Apr 3, 2015

It sounds like the hoses are hooked up backwards.

hwatkins · Apr 3, 2015

Ed of all trades said:
It sounds like the hoses are hooked up backwards.

Unless the documentation is wrong, I don't see how I have it hooked up wrong, this is the hydraulic circuit below:

Pressure Release Detent:
This feature provides a pressure release detent for the pool 'out' (handle in) position. When the spool is manually placed in the detent positron oil is directed to the 'B' work port (the port away from the handle). When the pressure in the 'B' port reaches a preset level the detent will release and the spool will center.

J_J · Apr 3, 2015

The IN hose and OUT hose are reversed.

J_J · Apr 3, 2015

The IN hose and OUT hose are reversed.

The B port is toward the handle.

Model LS3060 Rapid Extend Log Splitter

http://www.princehyd.com/Portals/0/valves/LS3000Manual.pdf

Click instruction sheet,

Tank pressure is only 150 psi.

You may already have damage the valve.This valve is a regen valve.

If you hold the handle full out, the cyl will extend rapidly. Power mode is fro neutral to the soft stop.

Did you not have instructions with the valve?

hwatkins · Apr 3, 2015

The port is labeled B as the one away from the handle on the top, the in port is labeled to the left of the handle looking at it from the top. I don't think I have those reversed.

ATTACH=CONFIG]419472[/ATTACH]

triptester · Apr 3, 2015

The picture of your splitter control valve shows the hoses the opposite of what the illustration shows.

J_J · Apr 3, 2015

hwatkins said:
The port is labeled B as the one away from the handle on the top, the in port is labeled to the left of the handle looking at it from the top. I don't think I have those reversed.

ATTACH=CONFIG]419472[/ATTACH]

You are looking at the wrong valve a LS-3000

You should be looking at a LSR-3060-3 which is illustrated in the PDF I posted above.

Don't know who helped you out, but they did you a disservice by lack of knowledge.

A LSR -3060 is disigned to be used with a low GPM pump.

It takes say a 4 GPM flow rate and makes it into a 24 GPM flow rate.

So with that PTO pump, you are asking the 11 GPM valve to support a 44 GPM flow using the regen mode.

If you are going to keep the PTO pump, then get a regular log splitter valve.

It is possible that you could run the engine low enough for a low GPM flow and still use the LSR valve.

hwatkins · Apr 3, 2015

JJ not following you, the LSR-3060-3 is the same port configuration, this is from page 18, port B is away from the handle

hwatkins · Apr 3, 2015

JJ not following you, the LSR-3060-3 is the same port configuration, this is from page 18, port B is away from the handle. It does look like they show port A and B going to different ends of the cylinder though. Maybe I'm confused on which direction the fluid flowing would make the cylinder move, I assumed fluid going in to the end near the rod would cause the cylinder to retract

View attachment 419479

J_J · Apr 3, 2015

You are right about the ports, I have been out in the sun to long.

But the LSR is a regen valve and you have to connect it correctly.

hwatkins · Apr 3, 2015

Here are some more pictures of the hookup, It looks like I do have the A and B ports reversed because for the LSR-3060-3 it says the detent valve feeds the A port.

Thanks for your help

J_J · Apr 5, 2015

Are those water pipe nipples in the IN port of the valve, if so I would not recommend that setup.

You really should get a regular log splitter valve for that pump.

Your tractor pump and the LSR 3060 valve should work well.

hwatkins · Apr 7, 2015

J_J said:
Are those water pipe nipples in the IN port of the valve, if so I would not recommend that setup.

You really should get a regular log splitter valve for that pump.

Your tractor pump and the LSR 3060 valve should work well.

Yes, I have one piece of black pipe going into the valve, I couldn't find a hydraulic fitting at the time, but intend on fixing it. I guess the danger is the pressure?

The valve has a regen mode and regular mode, I'm running it in regular mode right now, so I think it's the same as a normal log splitter port in that mode.

When you say my tractor pump, you are saying using something like a power beyond port? I do not have a power beyond port that I know of.

J_J · Apr 7, 2015

Do you have a FEL?

IF so, you should have a PB port, and if not, you could run the log splitter directly off the tractor pump.

rswyan · Apr 7, 2015

hwatkins said:
Yes, I have one piece of black pipe going into the valve, I couldn't find a hydraulic fitting at the time, but intend on fixing it. I guess the danger is the pressure?

No ... the danger is that it could explode like a hand grenade ...

The pressure (and using the incorrect fitting) is just what causes the danger ...

It would be one thing to use a pipe fitting on the (oversize) return line ... quite another to place it on the pressure side.

oldtimer 66 · Apr 7, 2015

The only observation I have is that it looks like the suction line is some what kinked and slightly collapsed as to maybe too long and or it needs a different routing and it looks small. But maybe that is just me. Later.

hwatkins · Apr 8, 2015

rswyan said:
No ... the danger is that it could explode like a hand grenade ...

The pressure (and using the incorrect fitting) is just what causes the danger ...

It would be one thing to use a pipe fitting on the (oversize) return line ... quite another to place it on the pressure side.

For Iron Pipe 1/2 Standard - STD - Sch. 40
the Bursting Pressure is 10380 (psi)
the Working Pressure 1300 (psi)

Wrought Steel Pipes - Bursting Pressure

so the working pressure is less than it should be but the valve would relieve the pressure before it got close to the bursting pressure.

I do plan on replacing it with a steel hydraulic fitting though to be safe.