TC30 Hydraulic Pressure

[mschuck]

I'm wondering if anybody can tell me what the max hydraulic pressure on a NH TC30 should be? and what relief setting can safely be set to. And how to increase this setting?

I've got a home made wood splitter (not made by me) that I'm hooking up to my tractor where the FEL would normal hook up and I'm really not getting the splitting power I'd like.

I think that part of the problem is the cylinder really isn't big enough, the shaft of the cylinder is 2" and the body is some where between 4" and 5". I put a pressure gauge on the hydraulics and it maxed out at about 1650psi. From what I've learned about hydraulics over the last 2 months I figure that means I'm only getting about 5100 pounds of force for splitting which isn't getting the job done on the larger, ~3' diameter, 16"-20" long, Fir and Alder rounds that I really want to use the splitter on.

So I'm wondering what I can do to save this splitter? If I can up the pressure a bit that will help in the short term but I'm sure that in the long term I'll need to figure out how to put a bigger cylinder on it or add another cylinder, any suggestions would be helpful.

I'm also having a bear of a time getting all the leaks out of the fittings on the hoses, I've been using the Teflon goo stuff but so far I've been unable to eliminate all drips. I'm sure that part of the problem has to be that I've had to use a couple of bushings to step the 3/4" hose down to the 1/2" quick disconnects but it still shouldn't be this hard, should it? Any tips or tricks on dealing with stuff would be appriciated.

Thanks
Matt S.

 

[mschuck]

I'm wondering if anybody can tell me what the max hydraulic pressure on a NH TC30 should be? and what relief setting can safely be set to. And how to increase this setting?

I've got a home made wood splitter (not made by me) that I'm hooking up to my tractor where the FEL would normal hook up and I'm really not getting the splitting power I'd like.

I think that part of the problem is the cylinder really isn't big enough, the shaft of the cylinder is 2" and the body is some where between 4" and 5". I put a pressure gauge on the hydraulics and it maxed out at about 1650psi. From what I've learned about hydraulics over the last 2 months I figure that means I'm only getting about 5100 pounds of force for splitting which isn't getting the job done on the larger, ~3' diameter, 16"-20" long, Fir and Alder rounds that I really want to use the splitter on.

So I'm wondering what I can do to save this splitter? If I can up the pressure a bit that will help in the short term but I'm sure that in the long term I'll need to figure out how to put a bigger cylinder on it or add another cylinder, any suggestions would be helpful.

I'm also having a bear of a time getting all the leaks out of the fittings on the hoses, I've been using the Teflon goo stuff but so far I've been unable to eliminate all drips. I'm sure that part of the problem has to be that I've had to use a couple of bushings to step the 3/4" hose down to the 1/2" quick disconnects but it still shouldn't be this hard, should it? Any tips or tricks on dealing with stuff would be appriciated.

Thanks
Matt S.

 

[Soundguy]

I don't have your model of tractor.. but can tell you that your manual may tell you what your aux hyd system relief pressure is. on my 7610s.. it is 2500 psi.. and i verified it with a gauge.. the relief pops at 2500 exactly.

That doesn't exactly answer your question, but here are a few other cosiderations. While you need sufficient PSI.. you also need sufficient flow.. or GPM. Without enough GPM.. your cyl will crawl..

Many people install a pto pump.. like a prince setup, and a small resv and thus have plenty of psi and gpm, as those pto pumps can really put it out.. Prince makes a good unit...

Again.. not what you asked.. just throwing it out... I'm not the impatient sort.. so i would also favor using tractor hyds.. if the pressure was high enough... I have an old ford 660 that uses the tractors engine mounted 4gpm hydro pump.. and I run a small loader off that... just takes patience /forums/images/graemlins/grin.gif

Soundguy

 

[Soundguy]

I don't have your model of tractor.. but can tell you that your manual may tell you what your aux hyd system relief pressure is. on my 7610s.. it is 2500 psi.. and i verified it with a gauge.. the relief pops at 2500 exactly.

That doesn't exactly answer your question, but here are a few other cosiderations. While you need sufficient PSI.. you also need sufficient flow.. or GPM. Without enough GPM.. your cyl will crawl..

Many people install a pto pump.. like a prince setup, and a small resv and thus have plenty of psi and gpm, as those pto pumps can really put it out.. Prince makes a good unit...

Again.. not what you asked.. just throwing it out... I'm not the impatient sort.. so i would also favor using tractor hyds.. if the pressure was high enough... I have an old ford 660 that uses the tractors engine mounted 4gpm hydro pump.. and I run a small loader off that... just takes patience /forums/images/graemlins/grin.gif

Soundguy

 

[mschuck]

I did look at the Operators manual and I don't have it with me right now but I think the wording was "System Relief pressure -- 2200". However when I checked it with the gauge it seemed to go (max out) at 1650 or so.

The GPM seems to be fine as the cylinder fully extends (about 20") or retracts in about 10 secs. I've never used a comercially produced splitter so someone with experience might say that it is crawling but I really can't imagine needing it to go much faster especially considering that when it does split something you generally don't have to extend it all the way.

 

[mschuck]

I did look at the Operators manual and I don't have it with me right now but I think the wording was "System Relief pressure -- 2200". However when I checked it with the gauge it seemed to go (max out) at 1650 or so.

The GPM seems to be fine as the cylinder fully extends (about 20") or retracts in about 10 secs. I've never used a comercially produced splitter so someone with experience might say that it is crawling but I really can't imagine needing it to go much faster especially considering that when it does split something you generally don't have to extend it all the way.

 

[Soundguy]

I would check your relief setting then. Trace those lines from your spools and see where they ar plumbed from ( power beyon on a divider block, or an axu port ). I've seen some divider blocks and loader joystick spools have their own relief valves that are set way lower than the main hyd system relief. In other words.. you might have rear remotes that relief at 2200.. but your loader may be plumbed in a way that the have another relief and it pops low.. like your 1650#.. etc.

If that is the case.. you may want to run off your aux port if you have one.. etc..

Post back.. I'd like to hear updates on this. i just did some hyd work myself on my NH tractor, and am interested in others hyd work as well.

Soundguy

 

[Soundguy]

I would check your relief setting then. Trace those lines from your spools and see where they ar plumbed from ( power beyon on a divider block, or an axu port ). I've seen some divider blocks and loader joystick spools have their own relief valves that are set way lower than the main hyd system relief. In other words.. you might have rear remotes that relief at 2200.. but your loader may be plumbed in a way that the have another relief and it pops low.. like your 1650#.. etc.

If that is the case.. you may want to run off your aux port if you have one.. etc..

Post back.. I'd like to hear updates on this. i just did some hyd work myself on my NH tractor, and am interested in others hyd work as well.

Soundguy

 

[Hooked_on_HP]

Are you useing the loader controls for the splitter or does the splitter have it's own controll valve. If the splitter has it's own controll it may have a releif valve on it.

 

[Hooked_on_HP]

Are you useing the loader controls for the splitter or does the splitter have it's own controll valve. If the splitter has it's own controll it may have a releif valve on it.