I think my best bet is to get a service manual, the selector valve does just go to the swing. The Hoe itself is actually a 3121 on a 3444 tractor. I have the manual for the tractor but not the hoe so I need to order that manual and maybe I can make some sense out of it.
3444 International Backhoe Hydraulic Problem
- Thread starter Bryce0623
- Start date
- Views: 35194
J_J
Super Star Member
- Joined
- Sep 6, 2003
- Messages
- 18,952
- Location
- JACKSONVILLE, FL
- Tractor
- Power-Trac 1445, KUBOTA B-9200HST
Looking at the number of spools 6, and the 6 levers, you have everything to operate the BH with out any additional valves. Can't see why you need another source to operate just the swing cyl.
Maybe this valve is to shift the hyd flow from the steering to the BH.
Since you have the tractor manual, how many hoses go to the BH?
Found this on another site.
Backhoe should be a 3121 or something similar.
The backhoe is also a little odd- ball. The backhoe works on two separate hydraulic systems. The power-steering pump runs the swing and stabilizers. The rest of the backhoe runs off the crankshaft-driven Cessnam pump. There is a diverter valve you have to push one way or the other - one for when you want to steer the tractor, and the other way when you want to use the hoe (swing and stabilizers).
Maybe this valve is to shift the hyd flow from the steering to the BH.
Since you have the tractor manual, how many hoses go to the BH?
Found this on another site.
Backhoe should be a 3121 or something similar.
The backhoe is also a little odd- ball. The backhoe works on two separate hydraulic systems. The power-steering pump runs the swing and stabilizers. The rest of the backhoe runs off the crankshaft-driven Cessnam pump. There is a diverter valve you have to push one way or the other - one for when you want to steer the tractor, and the other way when you want to use the hoe (swing and stabilizers).
Last edited:
J_J
Super Star Member
- Joined
- Sep 6, 2003
- Messages
- 18,952
- Location
- JACKSONVILLE, FL
- Tractor
- Power-Trac 1445, KUBOTA B-9200HST
On the operator left side, there are two large hoses, and one hose at the far tight.
I believe the valve is divided internally, with the right side, small hose, being feed by the Power steering pump, and the left side by the one large hose, main pump, and a return hose. Left side has an in and out port, but on the right I only see an in port, so the return galleries may be connected together.
Each side would appear to operate independently.
Does that hyd valve have a model #
I believe the valve is divided internally, with the right side, small hose, being feed by the Power steering pump, and the left side by the one large hose, main pump, and a return hose. Left side has an in and out port, but on the right I only see an in port, so the return galleries may be connected together.
Each side would appear to operate independently.
Does that hyd valve have a model #
In the diagram I posted it shows where the two large hoses go to one from the pump and the other back into the resevoir. The diverter valve on the fender supplies the swing valve, I can trace it directly to the swing. I will see if I can get number off the valve later today. I guess what I am having trouble with is that if the power steering pump runs the swing then why does it make such a difference and stall the engine when I have that valve in the up position if they are independent of each other?
J_J
Super Star Member
- Joined
- Sep 6, 2003
- Messages
- 18,952
- Location
- JACKSONVILLE, FL
- Tractor
- Power-Trac 1445, KUBOTA B-9200HST
Have you tried the swing leverwhile using any other lever at half leaver.
My thoughts here are that if a lever for any position is using the fluid for operation, the hyd gallery is closed off, and the out fluid from the swing cyl might not have a place to go, therefore bogging down the engine.
If that is true, then the only way to use both the swing and any other lever at the same time, would be to use part lever, so there is a path for fluid to travel.
As far as the 3 port valve, I believe it is being used for the swing cyl because there is no need for steering while using the BH, and if steering is needed, a push on the knob and you have steering.
Just an educated guess.
My thoughts here are that if a lever for any position is using the fluid for operation, the hyd gallery is closed off, and the out fluid from the swing cyl might not have a place to go, therefore bogging down the engine.
If that is true, then the only way to use both the swing and any other lever at the same time, would be to use part lever, so there is a path for fluid to travel.
As far as the 3 port valve, I believe it is being used for the swing cyl because there is no need for steering while using the BH, and if steering is needed, a push on the knob and you have steering.
Just an educated guess.
Last edited:
J_J
Super Star Member
- Joined
- Sep 6, 2003
- Messages
- 18,952
- Location
- JACKSONVILLE, FL
- Tractor
- Power-Trac 1445, KUBOTA B-9200HST
Should you want to get rid of that valve, I think this valve will work and be more functional.
Directional Control Valves 220-951 Detailed Information
Directional Control Valves 220-951 Detailed Information
Leejohn
Elite Member
I looked at my brothers and it is plumbed just like yours. He had filter trouble and it was blowed out big time. Might want to check that and also are you sure that the turn motors aren't locked up.This might be a good way to tell, is park it on a hill and it well swing by itself to the low side when you open the control valve.
Yes the manual should tell you.
Yes the manual should tell you.
I will try partially opening another valve when I swing. I have tried the swing on the side of a hill in the other position and it will swing down hill without any resistance. Thanks for the link to the valve, i would have to build a stand to put in front of the operator since the way this machine is designed the controls are on each side of you instead of in front, but that wouldn't be a big deal to do.
It would almost seem like you could take the diverter valve off and Y off the hose going to the other controls to supply the swing, but maybe the pump couldn't handle it. Any thoughts on that?
It would almost seem like you could take the diverter valve off and Y off the hose going to the other controls to supply the swing, but maybe the pump couldn't handle it. Any thoughts on that?
3444 Handyman
New member
That valve works the swing and power stearing. Has nothing to do with operation of up and down and other functions of boom. I rebuilt my engin 2 years ago and have not been able to get the power stearing to work since then. Left if parked with backhoe boom off the ground. It drifted down and now I am haveing problems with that also. That is run by the big pump infron of the motors. Have to remove the weights to get to it
