Biggest PTO Pump

[Tim's Red Tractor]

I just found this pump/increaser combo. Not sure on $$ but I will call them tomorrow. This could solve both issues.

Hydraulic PTO Pumps & Motors 50T Series | Cross Mfg.

Hydraulic PTO pumps can be driven by a 540 or 1000 RPM with a 3:1 speed increase. A thru-type internal spline can drive accessories while driving the pump too.

crossmfg.com

I was told the brush cutter needed 10-25GPM. My tractor offers 11gpm, I started by connecting the cutter to my third function. There was enough flow to turn the blades but not enough to simultaneously run the (up/down, left/right).

So I bought a power pack (25gal reservoir + 21gpm pto pump). Hooked it up the other day and same result. Spins the blade but no motion, the only difference is now I can see the hoses jump when I try to use the up/down.

That all leads me to why I am searching for a higher flow option.

 

[ptsg]

I just found this pump/increaser combo. Not sure on $$ but I will call them tomorrow. This could solve both issues.

Hydraulic PTO Pumps & Motors 50T Series | Cross Mfg.

Hydraulic PTO pumps can be driven by a 540 or 1000 RPM with a 3:1 speed increase. A thru-type internal spline can drive accessories while driving the pump too.

crossmfg.com

I was told the brush cutter needed 10-25GPM. My tractor offers 11gpm, I started by connecting the cutter to my third function. There was enough flow to turn the blades but not enough to simultaneously run the (up/down, left/right).

So I bought a power pack (25gal reservoir + 21gpm pto pump). Hooked it up the other day and same result. Spins the blade but no motion, the only difference is now I can see the hoses jump when I try to use the up/down.

That all leads me to why I am searching for a higher flow option.

Ok this lastest info is very important and should've definitely been included in the first post.

You have another issue going there with the power pack, most likely with plumbing, rather than a lack of GPM. The power pack should only feed the cutter. The loader will still use the tractor hydraulics and should move just fine.

 

[Tim's Red Tractor]

ptsg:

The cutter came pre plumbed with only 1 set of lines to connect. Those lines feed a valve assembly with solenoids to activate each function, the flow is continuous to the blade (the blade steals all the flow).

I was thinking the same as you. If I disconnect the hoses running the blade and connect to the pump + tank for continuous flow. Then I can connect the valve assembly to my third functions. Although that is not how it was designed.

 

[ptsg]

ptsg:

The cutter came pre plumbed with only 1 set of lines to connect. Those lines feed a valve assembly with solenoids to activate each function, the flow is continuous to the blade (the blade steals all the flow).

I was thinking the same as you. If I disconnect the hoses running the blade and connect to the pump + tank for continuous flow. Then I can connect the valve assembly to my third functions. Although that is not how it was designed.

Leave the loader valve setup as it was from factory.

Then connect the pressure line from the power pack to the motor on the cutter and the return comes from the motor to the power pack. All you need to do is turning the PTO on and it will start the mower. Pretty much like hydraulic snowblowers are setup on tractors with power packs.

 

[K5lwq]

ptsg:

The cutter came pre plumbed with only 1 set of lines to connect. Those lines feed a valve assembly with solenoids to activate each function, the flow is continuous to the blade (the blade steals all the flow).

I was thinking the same as you. If I disconnect the hoses running the blade and connect to the pump + tank for continuous flow. Then I can connect the valve assembly to my third functions. Although that is not how it was designed.

Could you post a picture of the cutter and the valves with plumbing? Maybe it would help us understand what is happening.

As ptsg said, I don’t think you have a flow rate problem. Something is off on the plumbing or is mechanically binding. I am guessing this unit has it’s own cylinders for movement?

 

[oldnslo]

I just found this pump/increaser combo. Not sure on $$ but I will call them tomorrow. This could solve both issues.

Hydraulic PTO Pumps & Motors 50T Series | Cross Mfg.

Hydraulic PTO pumps can be driven by a 540 or 1000 RPM with a 3:1 speed increase. A thru-type internal spline can drive accessories while driving the pump too.

crossmfg.com

I was told the brush cutter needed 10-25GPM. My tractor offers 11gpm, I started by connecting the cutter to my third function. There was enough flow to turn the blades but not enough to simultaneously run the (up/down, left/right).

So I bought a power pack (25gal reservoir + 21gpm pto pump). Hooked it up the other day and same result. Spins the blade but no motion, the only difference is now I can see the hoses jump when I try to use the up/down.

That all leads me to why I am searching for a higher flow option.

If mower came with manifold and valve assembly was there a schematic also provided? Suspect should be a priority flow control to supply a small flow to the aux functions without changing cutter head speed.

 

[Tim's Red Tractor]

The brush cutter is a "TOMCAT articulating brush cutter"

 

[Tim's Red Tractor]

IMG8890 shows the lines coming from the tractor into the manifold
IMG8887 shows the lines on top of the manifold exiting the manifold and feeding the blades and the 4 lines on bottom feeding the up/down, left/right.

The solenoids are wired to a remote I have in the cab. If I stand next to the cutter with the tractor off I can hear the solenoids click as if they are working. I then get in the tractor and turn the pto pump on and the blade spins, but the up/down, left/right do not work. As stated above I can see the hoses jump when I press the remote but nothing moves other than the blades.

 

[ptsg]

My bad on the suggestion about running the mower directly with the power pack. I didn't realize it had a small boom with 2 functions. The pictures did clear that up.

Are sure the lines are connected correctly between the power pack and the valve body of the mower? As in, Pressure from the power pack going into the Pressure port of the valve body and same for the Tank line/ports.

I couldn't find much info online about the mower. Only that it's sold by an auction company.

EDIT: On the picture of the valve body, I see the set screw and the jam nut of the relief valve backed off. That could be part of the issue but without manuals and a pressure gauge, it's to risky to mess with it "by luck".

 

[oldnslo]

Are there any markings on that manifold or any instructions provided with unit.

Do the blades stop spinning when using the power pack and operating one of the solenoid functions?

I see one valve with two coils, is there a second similar valve in that manifold?

agree with Ptsg on there is a valve possibly relief with adjustment screw appears backed out and lose but like he stated I would not just randomly try adjusting something.