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    John Deere dozer 850J code TCU620.4

    Absolutely!!
  2. C

    John Deere dozer 850J code TCU620.4

    Thanks you guys! The very bottom of one connection was in some frozen dirt. That’s all it took, cleaned it up a bit and good as new!
  3. C

    John Deere dozer 850J code TCU620.4

    OMG, there looks like 20 possibilities! Thank you very much! Now the fun begins!
  4. C

    John Deere dozer 850J code TCU620.4

    Ok and thank you for your help
  5. C

    John Deere dozer 850J code TCU620.4

    Ok, he did say this code can go to numerous sensors. Can I guy get a schematic off the internet?
  6. C

    John Deere dozer 850J code TCU620.4

    other codes Tank bypass sol no response TCU 522439.5 Fan drive sol short circuit TCU 1071.6 Ser#T0850JX117104 Talked to JD and they said should have 5 volts at blue wire T01. I tested with key on and 0 volts . Took off a cap for wiring harness near TCU in dash and did get 5 volts on T01 when cap...
  7. C

    John Deere dozer 850J code TCU620.4

    dozer just sitting idling to warm up and engine revved to 1925 rpm. Then seen code TCU 620.4 came up. Wher the heck do I start?
  8. C

    JD 850J Lt active codes

    Ok thank you, appreciate the knowledge
  9. C

    JD 850J Lt active codes

    What all is involved in that trans coolant circuit? Could it end up being quite expensive for parts?
  10. C

    JD 850J Lt active codes

    Ok thanks for the info! Pretty tough to diagnose before a person buys it as to what could be causing the code?
  11. C

    JD 850J Lt active codes

    Machine serial # T0850JX117104
  12. C

    JD 850J Lt active codes

    I am looking at a JD 850J Lt with 2 active codes TCU 1071.6 fan drive sol short circuit TCU 522439.5 Tank bypass sol no response Owner says he hasn’t worried about them because nothing has changed in the operation of the dozer What is the level of trouble with those codes? Look forward to...
  13. C

    D6R LGP III replace winch for a ripper

    Wow impressive, I’m not quite there yet
  14. C

    John Deere 850JR

    Gosh, is that good or bad
  15. C

    John Deere 850JR

    Did you get an 850, I’m looking at one and wondering if u like it
  16. C

    D6R LGP III replace winch for a ripper

    Ok, I understand what you’re saying. The more people ya talk to the more you learn.
  17. C

    D6R LGP III replace winch for a ripper

    Supposed to be from your state
  18. C

    D6R LGP III replace winch for a ripper

    8500 hrs and for what it’s worth they are not supposed to be hard hours. More of a clean up machine I gather
  19. C

    D6R LGP III replace winch for a ripper

    Did see an 850 J LT with 24” track and 12’ blade and ripper. Maybe that would be simpler
  20. C

    D6R LGP III replace winch for a ripper

    I’m not in soft ground, just a lot of lgp dozers around here.wasn’t sure if the conversion would be worth it or not
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