Fendt 720 Hydraulics Locking Out

[Superted820]

As the thread says. For no apparent reason. Can be moving or sitting still. All of a sudden hydraulics lock out - spools and link arms.
Does anyone have any clues as to where to look? No obvious signs of conduits rubbed or pinched. Two plugs under offside door taken apart and very clean no obvious issues.
Any help much appreciated!

 

[melted welly]

Had it on 828 when there’s a solenoid on its way out, I think if one fails it locks the lot, but there was always a fault code.

Think there’s also a suction gauze in tank which can clog, drops pressure, locks valves.

Is there no fault codes?

 

[Superted820]

Thank you. We have just found one of the solenoids below the exhaust, the top right hand one, was quite warm. When disconnected it locked out the hydraulics and threw up the spool error code below. Up until then no fault codes have come up.