I have an IT28F that abruptly failed the tool tilt system.
The tool holder just hangs all the way down and even if we lift it bake up it just falls back down.
I had resealed the right hand tilt cylinder several months ago so I remove the hose from the extend port of the left hand cylinder and tried to retract the tool holder, large quantity of fluid flowed out of the cylinder and no fluid out of the extend hose with no movement of the holder. This indicated that the piston seal had failed. So removed the cylinder and resealed it.
Today after installation of the cylinder I tried to retract it with the extend hose removed. This time I got large amounts of fluid out of the extend hose and nothing out of the cylinder.
Now I am convinced there is a problem with the control circuits. This machine uses hydraulic pressure to operate the main hydraulic valve located under the machine just behind and above the front axle.
Is there anyone here that is familiar enough with this machine to give me some trouble shooting advice to find the location of the problem?