Zetor and Oxdale log splitter combo?

[Matthew Storrs]

My Dad has just brought a new oxdale (t400?) log splitter which runs of the tractors (zetor approx 60hp) hydraulics. We are having the problem that it is 10 ton splitter yet it is only providing at most half that power at the moment. He reckons it may be one of two things

1) the tractors hydraulic pump is on the way out- however it can lift a rear end loader full of granite without a problem and the 3 point linkage is still very strong

or 2) the tractor simply doesnt provide enough pressure- but these splitters can run of compact tractors fine so would have thought a full size tractor wouldn't have a problem.

 

Anyone got any other ideas? im inclined to go along with the failing hydraulic pump on the tractor but i would have thought if it has enough power to operate the loader fully loaded it would easily have enough for a log splitter ram???

[windfall]

Could you just be expecting too much from your 10tonne splitter?

 

If i am running my 10 tonne splitter on my 85hp IH then i need the revs set at 1900rpm before the splitter is any good. If i come across a nasty bit then i need to crank the revs to the stop!

 

check out this thread.

 

http://arbtalk.co.uk/forum/general-chat/44893-what-size-engine-log-splitter.html

[Matthew Storrs]

I would expect it to be ten ton force. at the moment its the same as a 4t electric splitter. Is engine size irelevant? as small honda engines seem to power 10 tonners ok.

[monkeybusiness]

Is the pressure relief valve on the splitter set up correctly? Ring Oxdale, they are dead helpful and will tell you how to adjust it.

[MikeTM150]

engine size is irrelevant from the point of view of the maximum splitting pressure. What determines the splitting force is the pressure at which the relief valve blows. The bigger the engine the bigger the hydraulic pump, creating a larger oil flow to your splitter therefore increasing the speed of the splitter not actually the splitting force.

 

I suspect what it happening with your zetor is the pressure relief valve is releasing early. I suspect the 'loader' works fine because it has bigger diameter rams therefore requiring less pressure for the same effort. The only way to check this reliably is to get a test gauge and see what pressure it will produce, not having ever worked on a zetor I can't tell you (but someone probably will) if the relief valve is adjustable or if they never actually produced a high oil pressure.

 

Hope that helps!

[windfall]

Small Hondas can power high pressure dual flow pumps very well.

 

Is your tractor running high rpms when your using the splitter?

 

 

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[Matthew Storrs]

it doesn't run too high altho when it gets stuck on a log increasing the rpms helps a little but certainly nowhere near enough to be 10 tons worth.

I can't see an adjuster on the splitter itself, Im guessing it would be an in-line one like I have on my postdriver, certainly will phone oxdale see if they can help. I may try it of my digger see if it works properly then as I believe the digger provides more pressure then tractor despite having a smaller engine. Could only be the tractor then being the problem.

[windfall]

My money is on crappy tractor hydraulics. They might not necessarily be faulty, just have a poor pressure and flow rate.

 

What make and model is it? you can google the make and get the hydraulic specs...

[Marko]

engine size is irrelevant from the point of view of the maximum splitting pressure. What determines the splitting force is the pressure at which the relief valve blows. The bigger the engine the bigger the hydraulic pump, creating a larger oil flow to your splitter therefore increasing the speed of the splitter not actually the splitting force.

 

I suspect what it happening with your zetor is the pressure relief valve is releasing early. I suspect the 'loader' works fine because it has bigger diameter rams therefore requiring less pressure for the same effort. The only way to check this reliably is to get a test gauge and see what pressure it will produce, not having ever worked on a zetor I can't tell you (but someone probably will) if the relief valve is adjustable or if they never actually produced a high oil pressure.

 

Hope that helps!

 

What he said Unless the dump valve can be easily adjusted get a PTO pump.

[monkeybusiness]

it doesn't run too high altho when it gets stuck on a log increasing the rpms helps a little but certainly nowhere near enough to be 10 tons worth.

I can't see an adjuster on the splitter itself, Im guessing it would be an in-line one like I have on my postdriver, certainly will phone oxdale see if they can help. I may try it of my digger see if it works properly then as I believe the digger provides more pressure then tractor despite having a smaller engine. Could only be the tractor then being the problem.

 

There is an adjuster built into the spool block, but you need to know what you are looking for (I didn't!). It's very simple to adjust once you have been old how, but I'm nowhere near mine so can't jog my own memory to instruct you. When I bought my Oxdale splitter it was set up to bypass too easily and subsequently had no power - a quick phone-call to them had it sorted out quickly.