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  1. #21
    Elite Member dfkrug's Avatar
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    Feb 2004
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    4,526
    Location
    NorCal
    Tractor
    05 Kioti CK30HST w/ Prairie Dog backhoe

    Default Re: 2001 John Deere 4300 HST tractor extensive repairs and refurbishment

    As many JD owners now know, the rear axle housings (trumpet housings) on
    this series are made of cast aluminum, unlike others in this class. On my last
    tractor, the ear that supports the lower 3-point hitch arm was broken off on
    one side.

    Well, that happened to this unit, too, but I got the tractor after it was fixed.
    The left axle housing has been replaced, and JD sells you the one for the
    4x10 series as an update/retrofit. It has been strenghthened, but not
    in the 3-pt support area. I gather that other parts of these housings have
    also failed.

    In preparation for fabrication of a backhoe subframe for this tractor, I removed
    the ROPS bolts and lower bracket. There is a bunch of corrosion there, which
    I wanted to clean up and paint before proceding. I also wanted to replace the
    bolts since they were all rusty, and 2 of them were not the OEM bolts. You
    can see some of the rusty bolts in the first photo.

    The OEM bolts are quite special: they are grade 10.9 with a high-strength
    flanged nut. Someone swapped out some crappy grade 5 SAE
    bolts/nuts/lockwashers. These are critical supports for my subframe and I
    don't want to compromise here. I bought 8 new JD bolts/nuts.

    Here is the top/bottom of the original housing:
    -trumpet_4x00_1-jpg-trumpet_4x00_2-jpg

    Here is the top/bottom of the 4x10 replacement housing. Note the thicker
    bolt bosses and base. The flared section is a bit thicker, too.
    ]-trumpet_4x10_1-jpg-trumpet_4x10_2-jpg
    See my TBN projects at:
    http://mysite.verizon.net/resyfcgt/

  2. #22
    Elite Member dfkrug's Avatar
    Join Date
    Feb 2004
    Posts
    4,526
    Location
    NorCal
    Tractor
    05 Kioti CK30HST w/ Prairie Dog backhoe

    Default Re: 2001 John Deere 4300 HST tractor extensive repairs and refurbishment

    As I wrap up my repairs, I go back to the HST controls. This tractor,
    as well as my last 4300, has very abrupt forward and reverse controls.
    When I let off either go-pedal, the braking action is sudden, unlike any
    of the Kiotis I bought new, or my Bobcat CUT either.

    I wonder....was the Deere that way when it was new, or is the damper
    (#23 in the parts diagram) just worn out? Anyway, I debated replacing
    it, but decided not to. You get used to it.

    Anybody replaced their HST damper?
    Attached Thumbnails Attached Thumbnails -hst_pedal_damper-jpg  
    See my TBN projects at:
    http://mysite.verizon.net/resyfcgt/

  3. #23
    Elite Member rekees4300's Avatar
    Join Date
    Feb 2010
    Posts
    3,061
    Location
    Indiana
    Tractor
    JD 4300, JD X500

    Default Re: 2001 John Deere 4300 HST tractor extensive repairs and refurbishment

    Quote Originally Posted by dfkrug View Post
    I wonder....was the Deere that way when it was new, or is the damper
    (#23 in the parts diagram) just worn out?
    My 4300 has been that way since new so likely the damper is ok.

  4. #24
    Advertiser kennyd's Avatar
    Join Date
    Jul 2003
    Posts
    11,696
    Location
    Westminster, MD
    Tractor
    John Deere 4110, 455

    Default Re: 2001 John Deere 4300 HST tractor extensive repairs and refurbishment

    Quote Originally Posted by dfkrug View Post
    As I wrap up my repairs, I go back to the HST controls. This tractor,
    as well as my last 4300, has very abrupt forward and reverse controls.
    When I let off either go-pedal, the braking action is sudden, unlike any
    of the Kiotis I bought new, or my Bobcat CUT either.

    I wonder....was the Deere that way when it was new, or is the damper
    (#23 in the parts diagram) just worn out? Anyway, I debated replacing
    it, but decided not to. You get used to it.

    Anybody replaced their HST damper?
    My friend has a 4400, and his was/is like that also and has been from day 1. I nearly throw myself out of the seat every time I use it.
    KennyD
    www.boltonhooks.com



    Bolt On Grab Hooks, Weld On Grab Hooks, Specialty Chain Accessories, Specialty Hydraulic Components.

    Simple JDParts Tutorial HERE

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  5. #25
    Elite Member dfkrug's Avatar
    Join Date
    Feb 2004
    Posts
    4,526
    Location
    NorCal
    Tractor
    05 Kioti CK30HST w/ Prairie Dog backhoe

    Default Re: 2001 John Deere 4300 HST tractor extensive repairs and refurbishment

    Quote Originally Posted by kennyd View Post
    My friend has a 4400, and his was/is like that also
    and has been from day 1. I nearly throw myself out of the seat every time
    I use it.
    That implies that your 4110's eHydro is well-damped, right, Kenny? If so, maybe
    all of the 4x10s and later HSTs have better damping, including the 3x20s.

    In mid-range, both of my 4300s have been so undamped that I have the same
    experience as you do, if I have not driven them in a while. I wonder if that
    is a feature, rather than a bug.... You do get used to it.
    See my TBN projects at:
    http://mysite.verizon.net/resyfcgt/

  6. #26
    Advertiser kennyd's Avatar
    Join Date
    Jul 2003
    Posts
    11,696
    Location
    Westminster, MD
    Tractor
    John Deere 4110, 455

    Default Re: 2001 John Deere 4300 HST tractor extensive repairs and refurbishment

    Quote Originally Posted by dfkrug View Post
    That implies that your 4110's eHydro is well-damped, right, Kenny? If so, maybe
    all of the 4x10s and later HSTs have better damping, including the 3x20s.

    In mid-range, both of my 4300s have been so undamped that I have the same
    experience as you do, if I have not driven them in a while. I wonder if that
    is a feature, rather than a bug.... You do get used to it.
    Yes, the 4110 is well-damped (this is a small framed CUT). If you let off the pedal the tractor slows to a stop quickly, but not abruptly like the 4x00's do.

    The 4x10's (mid-framed) 3x20's, and 4x20's are all eHydro and not mechanical so there is no damper-but you can "program" how is stops.
    KennyD
    www.boltonhooks.com



    Bolt On Grab Hooks, Weld On Grab Hooks, Specialty Chain Accessories, Specialty Hydraulic Components.

    Simple JDParts Tutorial HERE

    Visit our YouTube Channel

  7. #27
    Padawan Tractor Learner
    Advertiser
    Johndeere3720's Avatar
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    Mar 2009
    Posts
    6,368
    Location
    NW Oregon
    Tractor
    Deere 317 & L118

    Default Re: 2001 John Deere 4300 HST tractor extensive repairs and refurbishment

    Very interesting thread, you always inspires me to go fix some of the junk i have laying around.

    Today I replaced rotted off fuel lines on a small chain saw. Still having difficulties getting it running, it will run for about 3 seconds then die. I even cleaned the carb too. I must be doing something wrong...
    -img_0805-1-jpg -img_0812-jpg
    My Fleet:
    2004 Deere 317 Skid Steer Loader
    66" Construction bucket, imatch QA adapter, CU72 Jake Rake, Middle Buster, 60" Landscape rake, 54"x 48" Pallet forks
    2005 John Deere L118
    42" deck

    Check out my rakes: www.Jakesimplements.com

    Member of the TBN "Young gun" Club

  8. #28
    Super Star Member RoyJackson's Avatar
    Join Date
    Nov 2001
    Posts
    18,524
    Location
    Bethel, Vermont
    Tractor
    John Deere 4400 MFWD, Deere 855D UTV, Z920A Zero Turn Mower and assorted implements

    Default Re: 2001 John Deere 4300 HST tractor extensive repairs and refurbishment

    This, and the other related threads by dfkrug, have been outstanding and I thank you very much!
    Roy Jackson

    "Any government that does not trust its citizens with firearms is either a tyranny, or planning to become one."
    -Joseph P. Martino

  9. #29
    Super Member mjncad's Avatar
    Join Date
    Aug 2006
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    5,114
    Location
    In the civilized First World
    Tractor
    A couple

    Default Re: 2001 John Deere 4300 HST tractor extensive repairs and refurbishment

    My 4200 stops abruptly if you let off the go-pedals too quickly. It's always been that way.
    Paraphrasing Douglas Adams - So long and thanks for all the bacon.

  10. #30
    Elite Member dfkrug's Avatar
    Join Date
    Feb 2004
    Posts
    4,526
    Location
    NorCal
    Tractor
    05 Kioti CK30HST w/ Prairie Dog backhoe

    Default Re: 2001 John Deere 4300 HST tractor extensive repairs and refurbishment

    Quote Originally Posted by Johndeere3720 View Post
    Today I replaced rotted off fuel lines on a small chain saw. Still
    having difficulties getting it running, it will run for about 3 seconds then die.
    Since I love engines of all kinds, I have rebuilt maybe a dozen+ chainsaws. Ethanol in the
    fuel makes the squishy parts go bad after several years. First thing I do after taking
    them all apart is put a kit in the carb. You can get pretty much any Walbro or Zama kit
    for under $10 these days. A bit more if you want a new needle valve. New fuel lines
    and inlet filters are a good ideal if they look bad. Primer bulb, too. Get a good look at the piston
    and bore if compression seems low. Piston kits are pretty cheap these days, too.
    I sometimes see poorly sealing intake rubber boots, which can cause poor running.
    Finally, if it does not run well, you may have a bad crank seal and or crank bearings.
    I have a saw apart now on my bench, awaiting a crankcase pressure test.

    Good luck (and don't spend a lot of time or money on repairing cheap crappy saws).

    Thanks, everyone, for the great feedback. I will post finished pix of the JD soon.
    Attached Thumbnails Attached Thumbnails -stihl_o19t-jpg  
    See my TBN projects at:
    http://mysite.verizon.net/resyfcgt/

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