The power steering box on our Ford 6600 has failed. Pulling it apart, it is a god awful design with all the thrust from the steering ram being put on a small manufactured ball bearing where the inner race is part of the recirculating ball worm/metering unit shaft, thus if it fails the worm end play moves up to the point the metering unit no longer works and it wrecks the inner race that is part of the shaft. Ours also has a badly scored bore for the steering ram.
I have been told the worm shaft is not available, a whole replacement aftermarket steering box is two and a half thousand and not rated for tractors with a loader fitted. (My location is AU not US)
So was thinking of fitting an orbital steering valve and hydraulic ram. Has anyone done anything like this before?