TheIglu
Bronze Member
- Joined
- May 9, 2008
- Messages
- 78
- Location
- Royalston, MA
- Tractor
- 1962 IH B414 Diesel, 2008 Kubota B2620
Hello all,
Please excuse my lack of knowledge with this. I'll try to explain the best I can.
My trusty 1962 IH B414 Diesel had a little bit of a let down last big snowstorm. I mount a fairly heavy 10 foot truck plow in a large snow bucket, so it was dealing with a lot of weight. The curl that holds it up when I lift the bucket gave out suddenly and the bucket/plow went limp. I picked it up high using the lift cylinders which still work fine (as does the power down and float), but I can't tip the bucket up using the curl. It will curl back if I force the bucket down against the ground and drive backwards, and without the plow and no load on it, it will move the bucket slightly, but will not hold it up more than a few inches and she flops back down after I let go. I tested the curl down, and that still has full power.
The motor does strain as normal when I try to curl the bucket up even though the cylinders do very little. So I'm getting a bit of flow, just not enough.
This leads me to believe that the cylinders are working properly. If I blew a packing on a piston, it would have no power either way, not just one direction.
So I assume I have a control valve issue. It is a twin stick design, very simple. Are there a bunch of O-rings in there? Could one of them of failed, or the little detent balls failed, causing this to happen?
I've never opened a control valve assembly, so any links to a how-to would be appreciated.
Is it typically cheaper to rebuild these or should I just buy a new valve setup at Tractor Supply tomorrow before Snowmagedon and try to figure out how to put it in correctly?
Thanks for your help. I searched back 11 pages on the hydraulics forum area, but didn't see anything quite like this.
Please excuse my lack of knowledge with this. I'll try to explain the best I can.
My trusty 1962 IH B414 Diesel had a little bit of a let down last big snowstorm. I mount a fairly heavy 10 foot truck plow in a large snow bucket, so it was dealing with a lot of weight. The curl that holds it up when I lift the bucket gave out suddenly and the bucket/plow went limp. I picked it up high using the lift cylinders which still work fine (as does the power down and float), but I can't tip the bucket up using the curl. It will curl back if I force the bucket down against the ground and drive backwards, and without the plow and no load on it, it will move the bucket slightly, but will not hold it up more than a few inches and she flops back down after I let go. I tested the curl down, and that still has full power.
The motor does strain as normal when I try to curl the bucket up even though the cylinders do very little. So I'm getting a bit of flow, just not enough.
This leads me to believe that the cylinders are working properly. If I blew a packing on a piston, it would have no power either way, not just one direction.
So I assume I have a control valve issue. It is a twin stick design, very simple. Are there a bunch of O-rings in there? Could one of them of failed, or the little detent balls failed, causing this to happen?
I've never opened a control valve assembly, so any links to a how-to would be appreciated.
Is it typically cheaper to rebuild these or should I just buy a new valve setup at Tractor Supply tomorrow before Snowmagedon and try to figure out how to put it in correctly?
Thanks for your help. I searched back 11 pages on the hydraulics forum area, but didn't see anything quite like this.