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  1. #1
    New Member
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    Sep 2013
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    2
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    HOT SPRINGS
    Tractor
    1985 JOHN DEERE 650

    Default JOHN DEERE 650 REPAIR

    COULD ANYONE GIVE ME THE HEAD AND ROD BOLT TORQUE
    SPECS FOR A JOHN DEERE 650 TRACTOR WITH YANMARE
    2T80 2 CY DIESEL ENGINE

  2. #2
    Platinum Member joecdeere's Avatar
    Join Date
    Apr 2002
    Posts
    768
    Location
    Cumming,Georgia

    Default Re: JOHN DEERE 650 REPAIR

    main head bolts ( larger ones)30, then 60, then 94 ft/lbs

    aux stud nuts (smaller ones ) 7, then 15, then 22 ft/lbs

    I have a PDF of the tech manual you're welcome to if wanted. Shoot me your email if so

    Joe


  3. #3
    New Member
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    Sep 2013
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    HOT SPRINGS
    Tractor
    1985 JOHN DEERE 650

    Default Re: JOHN DEERE 650 REPAIR

    THANKS FOR THE INFO YES PLEASE SEND ME PDF OF MANUAL AND ONCE AGAIN THANKS
    AL ATB.THREE@ROCKETMAIL.COM

    Quote Originally Posted by joecdeere View Post
    main head bolts ( larger ones)30, then 60, then 94 ft/lbs

    aux stud nuts (smaller ones ) 7, then 15, then 22 ft/lbs

    I have a PDF of the tech manual you're welcome to if wanted. Shoot me your email if so

    Joe


  4. #4
    New Member
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    Jun 2015
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    4
    Location
    bethel oh
    Tractor
    john deere 650

    Default Re: JOHN DEERE 650 REPAIR

    I've been trying to get my JD 650 running well enough to climb the ramp onto a truck to haul it from California to Ohio. It had been sitting idle under cover for 19 years. Two attempts have failed to get up the truck's ramp, seemingly due to a fuel delivery deficiency. The rig will start with the help of starter spray and heat up in about 5 minutes hot enough to keep running on its own. (I hate starter spray because of the pre-ignition.) The front loader and rear 3-point hitch hydraulics work, but the 3-point lifter slows the engine which then recovers RPM in a few seconds if kept in full up position. The throttle control doesn't seem to make any difference, under load or not. The rig will run okay with loader and 3-point holding up on the flat, but when attempting uphill it can't maintain RPM and soon dies. It seems to me to be unable to increase fuel delivery in response to load demands. I had a friend back in Cali bleed the fuel lines up to the injectors but he only did one of the two because he didn't have a wrench of the proper size and shape to reach into the limited space. Perhaps the second (front-most) injector line is partially plugged - or maybe both of them to some extent. But I'm not a mechanic and would appreciate any suggestions as to what else might need attention to get this rig running like the champ it was born to be, and once was. There was mention of a service manual earlier here, and a pointer to one of those might help as well. I will have to fly back to Cali to take over getting this tractor onto the cross country truck. Thanks for anything, very much. --Lor

  5. #5
    Veteran Member jimmysisson's Avatar
    Join Date
    Jul 2005
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    1,855
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    W.Mass
    Tractor
    1993 NH 2120 (the best), 1974 MF 135 (sold, but solid), 1947 Farmall A (bought, sold, bought back, sold again), 1956 MH50 lbt (sold, in 1980, darn it)

    Default

    Did you try fresh fuel with some Sea Foam or similar? If there's time do that and let it sit a couple days then let it idle a half hour and see if that clears up what must be some system crud.
    Jim
    "Anything worth doing is worth doing slowly" Mae West

  6. #6
    New Member
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    Jun 2015
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    4
    Location
    bethel oh
    Tractor
    john deere 650

    Default Re: JOHN DEERE 650 REPAIR

    Fresh fuel yes, Sea Foam no, but I will try that, or have my proxy put it in.

    Also wondering why the throttle lever makes no difference. The shaft going into it does turn with the lever. I can't think of anything that might have broken something inside of it.

    And she "idles" at PTO RPM. But dies under heavy load, like going uphill. And won't die with throttle all the way off. Gunk got something stuck partially open in there? I would think the throttle lever would overcome that or I could feel a resistance. Humph?

  7. #7
    New Member
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    Jun 2015
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    bethel oh
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    john deere 650

    Default Re: JOHN DEERE 650 REPAIR

    I'm going to move this to a new thread called ' JOHN DEERE 650 CANT CLIMB HILL' so the hover preview is different from how this thread started.

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