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  1. K

    John Deere 310 Hydraulic Leak

    I have a leak at the control valve of my 74' JD 310. There was no o ring on the top of the control under the plastic rubber and washer. I put one there and I still have a leak. Now it looks like the top will unscrew according to the diagram and a o ring goes there. Is it accessible from the top...
  2. K

    1974 John Deere 310-D Problem

    I have a 74 JD 310-D. It sat for about 5 years before I purchased it. All things I have done so far is drain the diesel out of the tank, the lines and the injector pump also changed out the injectors and put in a new fuel/water filter. Injector pump screen was pulled and cleaned (wasn't that...
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