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Recent content by CGreenham

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    490 John Deere excavator stick boom up becomes jerky

    Thank you.
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    490 John Deere excavator stick boom up becomes jerky

    Thank you I will check.
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    490 John Deere excavator stick boom up becomes jerky

    shes the early one no letters just a 490.
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    490 John Deere excavator stick boom up becomes jerky

    Good Day I got an older 490 John Deer excavator with a forestry package and a fabtek timber harvester head. The issue I got is when bringing the boom in or lifting it up the stick becomes jerky. Other then that the machine works great. Just wondering if anyone had a quick fix for this...
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    1990 John Deere 490D Excavator four roller Fabtec Harvester Hydraulic issue

    Hello All, I found the problem it was the saw proximity sensor on the harvester head. Thank you all for your help.
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    1990 John Deere 490D Excavator four roller Fabtec Harvester Hydraulic issue

    Just a little update with the machine I found out if you start the machine and turn off the key which sends power to the fabtec head all systems will work except for the head. The machine will not go under load and all system seems fine and it will track good and the stick functions are good...
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    1990 John Deere 490D Excavator four roller Fabtec Harvester Hydraulic issue

    Hi all, Found this out this weekend, if I start the machine and shut off the key basically turn off the electronics to the processing head the machine runs fine except for the harvesting head functions. Must be a stuck valve in the head or something, sounds like the machine is underload and...
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    1990 John Deere 490D Excavator four roller Fabtec Harvester Hydraulic issue

    Thanks Dave I will check the filter, that right side motor always seemed weaker then the left side motor. Sounds better then the main pump gone. Thanks for your help.
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    1990 John Deere 490D Excavator four roller Fabtec Harvester Hydraulic issue

    It was the right side that wouldn't move. The left side worked strong.
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    1990 John Deere 490D Excavator four roller Fabtec Harvester Hydraulic issue

    Good Morning, I have an issue with an older John Deere 490D excavator/tree harvester. It was working fine and all of a sudden a few functions would not work, - One track drive motor will not work. - The stick in will not work it will go out but wont come back towards cab. - The feed roller for...
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