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Recent content by mb1020

Yesterday's Tractor Forums
  1. M

    1020 hydraulic issues

    Yes the line going to the pump has a check valve.
  2. M

    1020 hydraulic issues

    Ok I think I may have just stumbled on something but I need someone to confirm this. Sorry again for the pics, they are upside down. i tried turning them on my computer, even turned them upside down, but they still upload wrong...oh well. These are pics of the parts tractor with brake...
  3. M

    1020 hydraulic issues

    Gene, yes the steering housing was swapped as well. I looked at it pretty carefully and couldn't see any obvious flaws.
  4. M

    1020 hydraulic issues

    thanks Jim. Yeah all the orings got switched out, but it could be possible one got out of place when the valve assembly was inserted in the housing. Not exactly easy to get back together. Just doesn't make sense to me the new (different) valve would have the exact same issue as the old...
  5. M

    1020 hydraulic issues

    Jim, where did you get the image of the valve you mentioned with the plug. I can't find one like that on JDparts. None of the sectional drawings seem to match my loader. They all look like closed center. Perhaps someone replaced the valve? Your image looks right, but I need part numbers. The...
  6. M

    1020 hydraulic issues

    Bob, Yes that's what I thought about the steering. But here is what I did: I have 2 pretty much identical machines. Before ripping apart the steering on the running tractor, I tore out the one on the parts tractor, replaced ALL the seals, cleaned the valves, one was sticking a bit, and installed...
  7. M

    1020 hydraulic issues

    The first pic is the working tractor. the second pic is the spare part tractor. The lines are hard to see but definitely crushed.
  8. M

    1020 hydraulic issues

    So if I understand correctly... cap off the output at the pump, then check pressure off the pump directly using the port on top opposite the destroke valve?
  9. M

    1020 hydraulic issues

    So I turned down the pressure a bit. Haven't rechecked it to see where it's at. When disconnected, oil flows out the hose coming from the side port of the valve, which is plumbed to the filter housing, no oil flows from the other hose unless the valve is cracked. However, the oil slowed to...
  10. M

    1020 hydraulic issues

    Thanks guys. I really appreciate all the help. So if the loader is open center, how would I check to see if the valve is operating properly? If my understanding is correct, oil is always flowing through the third line back to the transmission? I'm going to disconnect the pressure line...
  11. M

    1020 hydraulic issues

    There is a second (return?) hose going to a port right near the fill hole on the back of the transmission. If I remember right it comes off the left side of the loader valve just above the return going to the filter housing. Is that a filter bypass? If so what do I do with that hose to check it?
  12. M

    1020 hydraulic issues

    Thanks everyone. Ok let me answer a few questions. late model serial # post 45199. no seperate power steering pump. Just pulled the whole thing apart so I'm pretty familiar with it. I spent a lot of time on here researching before I tackled that project. JD 143 loader (not sure open or...
  13. M

    1020 hydraulic issues

    Hello Everyone, I am hoping someone here can help me figure out what is going on with my 1969 1020 John Deere. I've tried searching all over the web for info and just can't seem to figure it out. Problems: Steering locks and pulls to right. Loader has poor response but operates. Rockshaft...
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