BH hookup ?

[ditzel]

Need Hydraulic help, big time.
Just got a woods bh6000, don't have a pto pump/tank, so I need to tap into tractor hyd.
Tractor already has a FEL from factory with 3 hoses coming from hyd. block- 1 into P, 1 into PB and 1 into T.
I installed two tee's, one into the P port and one into the T port and ran the lines to the BH. Also the bh has a pressure diverter valve on it.
The BH only works (real slow) while I depress the FEL raise lever.
What did I do wrong and how do I fix it?
Thanks
Tom

 

[kennyd]

It's not working because you CANNOT "Tee" pressure lines. All valves must be plumbed in series. Hydraulic fluid is like electricity, it will take the path of least resistance, and that is not your BH!

You need to take a line from the PB port on the loader valve to the BH INLET, then the BH OUTLET to where the PB line is connected now. Plump in QD's so you can remove the BH, and make sure the lines are connected back together when the BH is removed as this PB line has the full flow of the hydraulic pump going thru it, and series damage can occur if it has no where to go.

Clear as mud

 

[ditzel]

Thanks for the info, now it makes sense. I looked at some other posts about PB but it didn't sink in. The information you can obtain from this site and the folks on it is awesome.
Thanks

 

[drivadesl]

Say Ditzel, when you get that bad boy set up and mounted be sure to post some action shots! BTW, where abouts in NJ are you?

 

[ditzel]

I will post some action shots as soon as I get to try it out. There is a pic of it now on the attachments forum under "bh6000 on mahindra 2615". I'm in somerset county, nj.

 

[ditzel]

OK,
BH works but not real fast when tractor is running about 2500rpms.
Is this normal?
I have the hose from FEL PB going to BH in, and the BH out going tee'ed into the tank port on the block with the FEL tank line, and I plugged the N port(where the FEL PB was going to).
At idle, the BH doesn't move.
This is the way Woods says to hook it up in the manual.
Any suggestions appreciated.

 

[ditzel]

KennyD,
As per Woods tech support, I hooked the line from my PB on the FEL to the BH inlet, and the BH outlet tee'd into the tank return on the tractor hyd block on the frame rail, also plugged where the PB used to go on the tractor hyd block.
The BH now operates, but at probably only a 1/4 of the speed that it should.
And at idle or 2000 rpm doesn't really make a difference.

Would changing the BH outlet to where the PB used to go on tractor hyd block on the frame rail instead of the tank return tee make a diffence?

 

[kennyd]

Sorry I missed your last post...

I don't think that hooking the return line up differently will make a difference, but I guess it's worth a try...
What is you hydraulic pump on the tractor rated for? (GPM)
What size hoses did you use?

 

[ditzel]

tractor pump is 7.8gpm and I ran 3/8 lines. I'm baffled cause the FEL operates normally, even at idle. the BH has a diverter valve for use with tractors w/greater than 5gpm. i'm wondering if that might be cause my problem

 

[kennyd]

Not familiar with the diverter valve on the BH, How is it plumbed? Is there an adjustment on it? Do you have any pictures?

 

[justcountry]

Hey Ditzel , the 3/8 lines could be part of the problem also, I have 1/2 lines going to my bh90 hoe on my kubota, I figure it's kinda like plumbing water lines, if you are running only one cylinder, 3/8 would be ok, but the hoe has 5 or 6 cylinders, so you need the bigger line for volume? I'm not sure, but you probably hate to have to get all new lines? but htat may be all thats wrong.

 

[ditzel]

Talked to Woods tech support again. They put us on a 3 way call with one of their engineers, they said it might be a bad quick connect or the flow diverter might be bad. Today I finally had a couple hours to work on this and I removed the both sets of quick connects and removed the flow diverter and still have the same problem. The bh works but at about a 1/4 of the speed it should. I'm taking justcountry's advice and going to go with 1/2 in hoses.

 

[JerryG]

detzil,
Woods tech is more than likely right. Your 3/8" hose is plenty. Going to 1/2" will just be throwing money away. I would change the quick connectors before anything else.

 

[justcountry]

I was curious, are you tee'd into the tank port or the pump return? My hoe goes back into the pressure return not the tank port. Also, I'm not sure what the pressure diverter does and how it works. Is it attached to the tractor or the hoe? I think I read you right, you removed both the QC and the diverter and it still is slow? good luck

 

[justcountry]

One more question, Is the hoe really slow when operating one function or multiple.

 

[ditzel]

I already replaced each of the 2 sets of quick connects, one set at a time, with a straight coupling. There was no change. One reason I'm going to change the hoses is you can hear and feel some resistance where the 3/8 male threaded end of the hose is when the tractor is running. I'm hoping the hose ends are my problem.

 

[ditzel]

JUSTCOUNTRY bullseye! give that man a cigar! The 1/2" hoses just came today from TSC. Swaped them out with the 3/8" and the hoe works like a 2 dollar hoe on dollar day! What a difference. It moves at a perfect speed with the idle set as low as it will go.

 

[justcountry]

Man thats great, I wasnt sure if that would do it , I was just grasping at straws. I have heard of people with grapples using 1/4" lines instead of 3/8 to slow the action down when they use the electric valve. so i figured the opposite would be true. I'm reallly glad you got it figured out, and it will also teach the rest of us something. take care

 

[kennyd]

Great, glad you got it fixed!, I would have thought the 3/8 line would have been fine for your rated GPM!

 

[RonMar]

The 3/8 line may have been fine for the application. Perhaps you just have a bad line with a collapsed/split inner liner restricting the flow. You could put them back on one at a time to check this. Would be a real pain to use them in another project and wonder what the problem was with the design. I hate pulling bad parts off the shelf...