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  1. #1
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    Default JD 300X loader problem.. 3320 tractor

    I have noticed that recently, my 300X loader w/either pallet forks or buck, will "droop", in other words, either will roatate to a dump configuration. It's a slow creep, even when engine is running, and lift control is centered. The frame lift is ok, just the front end. Was disking last week, with pallet forks mounted. About every 10 minutes, I'd better roll them back or they would fall enough to catch the ground. Both bucket cylinders seem involved, in that at any given time, both cylinder rods will measure the same. So it doesnt seem to be one cylinder having a problem. What's taken place to cause this?

  2. #2
    Super Star Member J_J's Avatar
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    JACKSONVILLE, FL
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    Power-Trac 1445, KUBOTA B-9200HST

    Default Re: JD 300X loader problem.. 3320 tractor

    Piston seals in the cyl are probably shot. Probably not a spool problem. Does the relief activate when cyl are fully extended?

    Even if one cyl is good, the pressure from the bad cyl could leak to the other side of the piston.
    J.J.

    When I works, I works hard. When I sits and thinks, I goes to sleep.

    Git er done.

  3. #3
    Advertiser kennyd's Avatar
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    Westminster, MD
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    John Deere 4110, 455AWS

    Default Re: JD 300X loader problem.. 3320 tractor

    JD has a published spec on leak down rates-as well as other OEM's also. Some leakdown is to be expected. Yours does not sound to bad just yet, but you may want to get some seal kits to have in stock for the future.
    KennyD
    www.boltonhooks.com

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  4. #4
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    Default Re: JD 300X loader problem.. 3320 tractor

    Thanks for replies. Question now.... where's the best place to find illustrated R/R ( "remove and replace") information. I'm familiar with hyd. cyls., but I want to make sure it's done as JD has in mind.

  5. #5
    Advertiser kennyd's Avatar
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    John Deere 4110, 455AWS

    Default Re: JD 300X loader problem.. 3320 tractor

    KennyD
    www.boltonhooks.com

    #BoltOnHooks



    Bolt On Grab Hooks, Weld On Grab Hooks, Specialty Chain and Rigging Accessories, Specialty Hydraulic Components, and MUCH more!

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  6. #6
    Super Member JB4310's Avatar
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    Feb 2005
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    Central CT
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    J.D. 4310 E-hydro

    Default Re: JD 300X loader problem.. 3320 tractor

    Mine will leak down when not running, but not a noticeable amount when engine is on. I use forks and a home made man lift basket to do some pruning or painting etc. If I kill the engine with a guy working from the platform, I would have to restart every 10 minutes or so to level. If I leave the engine running usually don't have to level it in the time we might be working in one spot.

    Sounds like OP's is leaking a little to fast?

    JB,
    JD 4310; E hydro, 300CX, 48 BH, 60" box, 72" rake, 72" rear blade, cast pallet forks, 48", 61"HD & 73" high volume bucket.
    FORD 1700; 2 WD, 2600 hrs.
    JD 320; Hydra lift, 48" deck and 48" snow blade.
    2007 Dodge Ram 3500, Cummins 6.7L, Aisin 6 speed, 9ft utility body.

  7. #7
    Platinum Member Red Horse's Avatar
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    Dec 2010
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    Bolton, MA
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    Deere 655ZTrak, Deere 4720 Cab, 400 X LT 155

    Default Re: JD 300X loader problem.. 3320 tractor

    How many hours do you have???

  8. #8
    Advertiser kennyd's Avatar
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    John Deere 4110, 455AWS

    Default Re: JD 300X loader problem.. 3320 tractor

    Quote Originally Posted by JB4310 View Post
    Mine will leak down when not running, but not a noticeable amount when engine is on. I use forks and a home made man lift basket to do some pruning or painting etc. If I kill the engine with a guy working from the platform, I would have to restart every 10 minutes or so to level. If I leave the engine running usually don't have to level it in the time we might be working in one spot.

    Sounds like OP's is leaking a little to fast?

    JB,
    The engine ON or OFF is irrelevant if the valve is in neutral. If the cylinder are leaking (internal bypassing I should say) then the engine running (pump pumping) has no effect if the valve is not activated.
    KennyD
    www.boltonhooks.com

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  9. #9
    Super Member JB4310's Avatar
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    Central CT
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    J.D. 4310 E-hydro

    Default Re: JD 300X loader problem.. 3320 tractor

    Quote Originally Posted by kennyd View Post
    The engine ON or OFF is irrelevant if the valve is in neutral. If the cylinder are leaking (internal bypassing I should say) then the engine running (pump pumping) has no effect if the valve is not activated.
    I somewhat understand your logic Kenny, but I am quite certain about my observations. Are you saying that I should not be seeing what I am ? Or that there are different types of leak down?

    JB.
    JD 4310; E hydro, 300CX, 48 BH, 60" box, 72" rake, 72" rear blade, cast pallet forks, 48", 61"HD & 73" high volume bucket.
    FORD 1700; 2 WD, 2600 hrs.
    JD 320; Hydra lift, 48" deck and 48" snow blade.
    2007 Dodge Ram 3500, Cummins 6.7L, Aisin 6 speed, 9ft utility body.

  10. #10
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    Default Re: JD 300X loader problem.. 3320 tractor

    To "Red Horse"~~~~

    My 3320 has 470 hours, probably more than half w/o front loader being used.

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