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  1. #1
    New Member
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    Aug 2013
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    3
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    lone jack mo.
    Tractor
    john deere 3030 gas

    Default 3020 john deere

    good morning, have 3020 j.d. with148 loader . loader has always worked fine until this morning. while useing it this morn. set bucket down , then would not lift or tilt. hyd. lines are limp . fluid full. any ideas where to start trouble shooting would be greatly appreciated. thanks in advance. mike

  2. #2
    Elite Member Tx Jim's Avatar
    Join Date
    Jan 2007
    Posts
    4,432
    Location
    Coyote Flats,Tx
    Tractor
    JD 4255/Kubota M7040 HDC

    Default Re: 3020 john deere

    How is loader controlled(scv or ind hyd valve)? Have you tried disconnecting/reconnecting any hyd quick couplers associated with FEL? Does power steering work properly?

  3. #3
    Super Star Member brin's Avatar
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    Jul 2009
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    10,701
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    Georgia - Mt. Vernon by The Store just 5 miles east and right by the big oak tree then to the creek.

    Default Re: 3020 john deere

    root - go to the back of your tractor on the right side now look around below ...not under, but below the seat on the hydraulic lines an you will see a flap switch...flip it the other way...somehow you may have hit that switch with debris or something...that has happened to be a couple of times...I don't have a diagram to post but look back there and see....good chance that is it..
    Bob

    WORRYING does not take away tomorrow's TROUBLES, it takes away today's PEACE.


    NH - TC-29 , FEL, Bush hog, Bush hog brand finishing mower, Post hole digger, 6' Back blade, sub-soiler, Pallet forks, 20KW PTO Generator , 21 hp Murray Mower
    JD -3020 with FEL and a 16 HP. K-Grow Lawn Tractor (bought from K Mart 1994) and runs great !
    Clark 130 EN Mig Welder

  4. #4
    Elite Member Tx Jim's Avatar
    Join Date
    Jan 2007
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    4,432
    Location
    Coyote Flats,Tx
    Tractor
    JD 4255/Kubota M7040 HDC

    Default Re: 3020 john deere

    Quote Originally Posted by brin View Post
    root - go to the back of your tractor on the right side now look around below ...not under, but below the seat on the hydraulic lines an you will see a flap switch...flip it the other way...som
    No flap switch for hyd's on any 3020's I ever sold or worked on.

  5. #5
    Super Star Member brin's Avatar
    Join Date
    Jul 2009
    Posts
    10,701
    Location
    Georgia - Mt. Vernon by The Store just 5 miles east and right by the big oak tree then to the creek.

    Default Re: 3020 john deere

    Quote Originally Posted by Tx Jim View Post
    No flap switch for hyd's on any 3020's I ever sold or worked on.
    I have one on mine....I wonder why...? Maybe the previous owner had it there to switch from one connection to the other or some other reason...the switch is a flat toggle type switch and can be flipped up or down...I have not had to mess with it in a few years now...the tractor is out at the farm or I'd send a pic., if it would even show up where it is located.
    Bob

    WORRYING does not take away tomorrow's TROUBLES, it takes away today's PEACE.


    NH - TC-29 , FEL, Bush hog, Bush hog brand finishing mower, Post hole digger, 6' Back blade, sub-soiler, Pallet forks, 20KW PTO Generator , 21 hp Murray Mower
    JD -3020 with FEL and a 16 HP. K-Grow Lawn Tractor (bought from K Mart 1994) and runs great !
    Clark 130 EN Mig Welder

  6. #6
    Gold Member
    Join Date
    Jan 2012
    Posts
    340
    Location
    Winchester Ky
    Tractor
    Allis Chalmers ED 40

    Default Re: 3020 john deere

    I just looked at a 3020 this morning that suddenly lost all hydraulics. Front pump is turning, but there is no flow from charge pump. Oil is clean, suction screen is clean, but no oil from the charge pump. Any thoughts on that?

  7. #7
    Elite Member Tx Jim's Avatar
    Join Date
    Jan 2007
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    4,432
    Location
    Coyote Flats,Tx
    Tractor
    JD 4255/Kubota M7040 HDC

    Default Re: 3020 john deere

    Are you positive frt hyd pump shaft is spinning with the engine?? Gear may have broken it the trans pump.

  8. #8
    Gold Member
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    Jan 2012
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    340
    Location
    Winchester Ky
    Tractor
    Allis Chalmers ED 40

    Default Re: 3020 john deere

    Is that a common problem with earlier models? The parts book only shows a gear pump in the early serial number tractors. Later units show a gerotor type pump, and evidently, a different type setup entirely. I have a manual coming, but still a few days away. Can't get much detail from the parts book, but guessing the pump is at the front of the transmission and accessed by split between clutch housing and trans?

  9. #9
    Elite Member Tx Jim's Avatar
    Join Date
    Jan 2007
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    4,432
    Location
    Coyote Flats,Tx
    Tractor
    JD 4255/Kubota M7040 HDC

    Default Re: 3020 john deere

    Syncro-range trans has a gear pump mounted in the diff housing area driven off the top shaft in the trans. No it's not common for the trans pump gears to break but with the hyd's stopping abruptly it's all I could think of except the frt pump drive coupler failure. Trans pump can be accessed by removing rockshaft housing without splitting tractor. I recommend more hyd diagnostics before R&R of trans pump.

  10. #10
    Gold Member
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    Jan 2012
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    340
    Location
    Winchester Ky
    Tractor
    Allis Chalmers ED 40

    Default Re: 3020 john deere

    The tractor will still move, so at least most of the gears and shafts are still turning. If the trans pump has no output, what's left to diagnose? The pump is either not turning, or not functioning. Could be a break in suction or pressure tubing, but that's all internal. What else can I check without opening it up?

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