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JD 5203 (4WD) Hydraulics Jerky

Chris Bethune A month ago the tractor's hydraulics started to become jerky and slow. So we changed the hydraulic filter and cleaned the pickup screen which had what looked like gasket material in it. Talked to John Deere and they said that it was normal wear and tear. Changed the fluid with generic oil with same specs. Now after only maybe 5 hours on the tractor the hydraulics are jerky and slow again. So drained the fluid and cleaned the pickup screen and found a bunch of small metallic substances (smaller than salt). But fluid back in and tractor did okay for just about 5 min then started back again. So drained the fluid again and put another new filter on it. Ran the tractor for about 5 more min and started again with jerky and slow hydraulics. Now what do I do?
Was thinking about taking off the supply line and blowing air through it to see if it is clogged but not sure which line it is? Can anyone help please?

JD5210 Metal flanks in the pickup screen is normal, if this is the first time you cleaned the pickup screen. Do not know about the gasket material, but would think that should not be there. Was it black in color, if yes it maybe an o-ring, which should not be there. I think that some where you are getting air in the suction line. The line from the filter to the pump, you can look at JDparts in following URL to see wnat should be there. Make sure you put some fluid on the gasket of the filter before you put it on.

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