Recent content by icie727

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    FORD 420 backhoe swing boom, loose chain

    Hello S 762, that's precisely what I was considering, but the ford guys couldn't remember what the fix was. A year ago, I asked an independent tractor/hydraulics man about the fix and he suggested operating two specific controls at the same time. It worked like a charm for a year. When the chain...
  2. I

    FORD 420 backhoe swing boom, loose chain

    Hi friends, this is still a problem. the boom cylinders are one way- they both draw in to keep the chain tight. Logic would suggest that a seal/packing is letting fluid into the end of the cylinder to keep the piston from fully retracting. Or is the problem in the combination valve box? I don't...
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    FORD 420 backhoe swing boom, loose chain

    it's a '78 420 concerning a problem with the backhoe #19-389. the BH swing chain loosens when the boom moves side to side. I have to drain oil from the boom cylinders' equalizer hose to have the pistons draw back in. works for half a day. any suggestions?
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