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Thread: 9k 785

  1. #1
    Join Date
    Oct 2013
    Posts
    16

    Default 9k 785

    I recently worked on the starting engine, cleaned gas tank, changed oil on the diesel and tried to start the starting engine. It cranked several times and now only turns the flywheel (behind the cab) about 1/4 turn. The rotation stops firmly. Wondering if perhaps a valve dropped?? I suspect the entire diesel and radiator assembly will need removal to open and diagnosis starting engine problem??
    I thinking I should try to sell her.... Fischer 54 Northfield Minnesota.
    Attached Images Attached Images

  2. #2
    Join Date
    Nov 2006
    Location
    Corralitos, Ca.
    Posts
    14,913

    Default

    Clarification..
    Does the pony come to an abrupt stop still disengaged from the main engine or when cranking the main?

  3. #3
    Join Date
    Nov 2006
    Location
    Gold Coast, Queensland, Australia
    Posts
    4,901

    Default Sell or save????????????

    Hi, Fischer54.
    Sell or save???????????? I yain't sure 'cos the photo in question, #5 in your first post, the rear view of the machine, is only small and some of the machine is obscured by weeds but I would suggest taking a good, hard, long look at the 'square' bearing on the inside of the left tandem case where the tandem case pivots. It appears that the left rear wheel is leaning in at the top and this is usually an indicator that something is not right with that bearing and/or the drive axle into the tandem case.

    Just my 0.02.
    You have a wonderful day. Best wishes.

    Deas Plant.

  4. #4
    Join Date
    Jan 2009
    Location
    Colorado Springs and Waitsburg WA
    Posts
    951

    Default Starting engine locks?

    Remove the mag and then try turning the engine.
    John Liebermann
    2 9U's, 5J, IHC544, Ford860, (All working farm tractors)
    cojhl2@gmail.com

  5. #5
    Join Date
    Oct 2013
    Posts
    16

    Default

    The flywheel stops abruptly, with a "clunk" when turning by hand.

  6. #6
    Join Date
    Jan 2009
    Location
    Colorado Springs and Waitsburg WA
    Posts
    951

    Default

    Quote Originally Posted by fischer54 View Post
    The flywheel stops abruptly, with a "clunk" when turning by hand.
    With the mag off??
    John Liebermann
    2 9U's, 5J, IHC544, Ford860, (All working farm tractors)
    cojhl2@gmail.com

  7. #7
    Join Date
    Oct 2013
    Posts
    16

    Default

    Don't know.. I'm 300 miles from the patrol.. I try the mag trick when I can. If it turns freely w/mag off, what happened and what's the cure??

  8. #8
    Join Date
    Nov 2006
    Location
    Faunsdale, AL USA
    Posts
    4,137

    Default

    Its not too bad to lift a pony off and take it home with you for repairs, but you will have to cover the pinion with something to keep out rain etc.

    If taking the mag out doesn't reveal anything and the pony still won't turn past the obstruction, you can quickly pop the top cover and heads off and see what's going on inside............ even with the pony still mounted on the grader if you want.

    Taking the mag out might show a bad gear or sometimes the shaft will break in one. Turning free and stopping against a hard obstruction doesn't really sound like a mag , though.

    Don't think there's any way the clutch housing could be already machined for a starter from the factory, but wouldn't hurt to check below the pinion for a small cover held on by 3 bolts.
    D2-5J's, D6-9U's, D318 and D333 power units, 12E-99E grader, 922B & 944A wheel loaders, D330C generator set, DW20 water tanker and a bunch of Jersey cows to take care of in my spare time

  9. #9
    Join Date
    Nov 2006
    Location
    Minnesota
    Posts
    498

    Default

    300 miles away, Where are you from? The blade isn't far from me. It has sat in that same spot for a long time.

  10. #10
    Join Date
    Jan 2009
    Location
    Colorado Springs and Waitsburg WA
    Posts
    951

    Default

    A few years back my 9U starting engine did just what you describe, slams up against a hard stop.

    I was in the process of removing the engine when a Dayton Tractor mechanic(at one time there were 100's of these tractors under their watch) told me before I remove the starting engine take the mag off. That was the issue!

    Something in the impulse hangs up. I still have that mag I need to look it over and figure out how it could cause the hangup.

    Anyway as ccjersey also says, it does give some limited view of engine moving parts.
    John Liebermann
    2 9U's, 5J, IHC544, Ford860, (All working farm tractors)
    cojhl2@gmail.com

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