I need some hydraulic help. I've got a Deere 440ICD with simple outside mount 602 blade. Power up/down, manual angle.
I've been fighting a problem where the blade won't stay up. It started as a slow drift but now it's to the point where it goes down so fast now that I have to hold the valve so there's constant pressure holding it in the up direction.
What makes no sense is that I can put the blade down and lift the front of the machine and it'll hold and not drift at all.
I just spent about 2 hours putting a new valve on and it didn't help a bit. Fluid level is full, pump seems to be making good pressure. I'm stumped and disgusted at this point.
I've been fighting a problem where the blade won't stay up. It started as a slow drift but now it's to the point where it goes down so fast now that I have to hold the valve so there's constant pressure holding it in the up direction.
What makes no sense is that I can put the blade down and lift the front of the machine and it'll hold and not drift at all.
I just spent about 2 hours putting a new valve on and it didn't help a bit. Fluid level is full, pump seems to be making good pressure. I'm stumped and disgusted at this point.