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John Deere 1050 power steering control valve

Posted: Thu Dec 19, 2019 4:24 pm
by Fairlane514
I have a 1984 (S/N 11000+) JD 1050.

My power steering is not working, it feels just like manual steering. I checked the diverter valve and it is clean and hydraulic oil is flowing to the control valve on the power steering cylinder. When i cracked the outflow side hoses of the control valve to the cylinders they were dry. The incoming hoses from the pump and diverter valve had oil in them.

I removed the whole control valve and got it on the bench. This valve does seem to be OEM, but the exploded view on the John Deere parts catalog does not match up.

I removed the dowel pin and the tapped the bore housing off the inside rod. The inside rod looks like a links of sausage, no O rings or spring(s).
i was expecting a piston, some O rings, spring(s) etc. The dowel pin appears to control the movement of the inside rod as it moves forward and back in the bore.

Does this sound correct? Should the inside rod (sausage links) move like a hydraulic cylinder ram? It looks as if it would move less than a half inch.

I can supply pictures if needed.

Re: John Deere 1050 power steering control valve

Posted: Fri Dec 20, 2019 6:31 pm
by winston