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Recent content by Z. Robinson

Yesterday's Tractor Forums
  1. Z

    JD starter wrench

    For my 4020, I bought a 9/16 socket made with a short u-joint, 3/8 drive. Ground down the socket to about 1/4 deep. Works well for me.
  2. Z

    A not quite right

    On mine the length of the throttle rod to the governor was critical. It's adjustable. I think the operators manual has instructions.
  3. Z

    water injection

    I understand that water injection is used mainly on high-performance spark engines that operate under high compression. The water serves to cool the mixture and reduce detonation. I doubt it would be useful on early JDs like your A since they used moderate compression.
  4. Z

    Starter bolt positions

    For a 4020, I bought a shallow 9/16 socket mounted short to a 3/8 u-joint. I ground the open end of the socked so that it just fits over the bolt head. Used with 3/8 extensions and rachet, it works nicely.
  5. Z

    Starter for John Deere 'A' - how to remove.

    FIRST disconnect the leads from the battery. Keep all of your fingers.
  6. Z

    4020 BATTERRY JUNK

    I sat my 12V "big rig" battery on the platform in front of the seat. Not as much in the way as you might think.
  7. Z

    4020D fuel injector

    Thank you!, msb.
  8. Z

    4020D fuel injector

    R-M Model CBC is leaking fuel thru the seam where it's mounted on the right rear of engine block. I understand there's an O-ring seal between them. Is this a primary fuel seal? Can I lift the injector pump to replace O-ring without disturbing timing or creating other problems? Thanks.
  9. Z

    Fuel leak at injector pump.

    4020D starts and runs well but R-M CBC injector pump assembly is seeping fuel at mounting point. Does this suggest a bad O-ring or is 'root problem' further up in pump? Thanks.
  10. Z

    Hydraulic pump coupler late 4020

    I am installing new rubber bushings in the drive coupler. Should they be installed with a lubricant? If so... Thanks.
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