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  1. #31
    Elite Member dfkrug's Avatar
    Join Date
    Feb 2004
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    4,443
    Location
    NorCal
    Tractor
    05 Kioti CK30HST w/ Prairie Dog backhoe

    Default Re: John Deere 4300 complete rebuild

    Quote Originally Posted by mjncad View Post
    My 4200 is a 2001 and has about 485 hours on it. As I recall the owner's manual says to get a valve adjustment every 500-hours. Mine runs just fine, and although I'm not fanatical about maintenance, especially washing my vehicles, I do try to stay on top of the mechanical stuff.
    I would not worry too much about valve adjustment. This machine has
    700-800hr on it and none of the 4300s at the rental place have had their
    valves adjusted. If your engine starts to smoke or gets difficult to start,
    that is a different story. If the valve lash increases, that should not be a
    big worry as these are low-revving engines with low valve spring rates that
    will minimize the peening effect (distortion) you can get with a loose
    valve train. That is my opinion; hardcore engine builders may disagree.

    I AM concerned about potential failure of the air hose. I warned the rental
    yard about this problem and I think you should check it out, too. The drain
    hose from the fuel filler catchment basin is pinched against the air hose and
    I think you can reduce the risk of damage by removing this optional hose.
    I hope other JD owners see this (incl 4x10 owners) and check it out.
    See my TBN projects at:
    http://mysite.verizon.net/resyfcgt/

  2. #32
    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: John Deere 4300 complete rebuild

    Quote Originally Posted by dfkrug View Post
    I AM concerned about potential failure of the air hose. I warned the rental
    yard about this problem and I think you should check it out, too. The drain
    hose from the fuel filler catchment basin is pinched against the air hose and
    I think you can reduce the risk of damage by removing this optional hose.
    I hope other JD owners see this (incl 4x10 owners) and check it out.
    Thanks for the tip on the air intake duct, I'll be sure to inspect mine even if I have to use a mirror or one of Rigid or Milwaukee's new reasonably priced snake-cams. Another excuse to buy a toy.
    Paraphrasing Douglas Adams - So long and thanks for all the bacon.

  3. #33
    New Member Bruce-4310TX's Avatar
    Join Date
    Jan 2009
    Posts
    23
    Location
    Rhome, TX
    Tractor
    2004 4310

    Default Re: John Deere 4300 complete rebuild

    Il ck my 4310 this weekend, also any chance u could post a good pic of that hood protector i want one to save my new hood. Thanks

  4. #34
    Elite Member dfkrug's Avatar
    Join Date
    Feb 2004
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    4,443
    Location
    NorCal
    Tractor
    05 Kioti CK30HST w/ Prairie Dog backhoe

    Default Re: John Deere 4300 complete rebuild

    Quote Originally Posted by Bruce-4310TX View Post
    Il ck my 4310 this weekend, also any chance u could post a good pic of that hood protector i want one to save my new hood. Thanks
    I will do that, Bruce. I do not plan to use my JD hood armor. I happen to
    have a 420 FEL brush guard that I am going to use.

    Please check your rear axle castings to see if they are Al or steel and post
    here. I am very interested in how many improvements JD has made when
    they moved to your series in about 2002.
    See my TBN projects at:
    http://mysite.verizon.net/resyfcgt/

  5. #35
    Elite Member dfkrug's Avatar
    Join Date
    Feb 2004
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    4,443
    Location
    NorCal
    Tractor
    05 Kioti CK30HST w/ Prairie Dog backhoe

    Default Re: John Deere 4300 complete rebuild

    OK, now I am going to drain the hyd oil. I collected about 10 gallons, as
    expected.

    The first photo shows the main drain underneath the middle of the tractor.
    it is connected to the suction pipe/hose that feeds the implement and
    power steering pumps. Very accessible, but very vulnerable, too. Not
    quite as vulnerable as my Kioti's imfamous low-hanging filter, but there
    is no protection from rocks or logs! :-( Anyone break theirs?

    The second photo shows my suction filter. It does not look good! It was
    not that easy to remove because it was covered with metal fragments,
    many more than can be seen here. Something broke inside there, no
    doubt. It could not have been sucking very well due to all these pieces...
    mostly non-ferrous, BTW. Don't forget to check your suction filter when
    doing your 400hr oil replacement!
    Attached Thumbnails Attached Thumbnails -oil_drain-jpg   -suck_filter-jpg  
    See my TBN projects at:
    http://mysite.verizon.net/resyfcgt/

  6. #36
    Elite Member dfkrug's Avatar
    Join Date
    Feb 2004
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    NorCal
    Tractor
    05 Kioti CK30HST w/ Prairie Dog backhoe

    Default Re: John Deere 4300 complete rebuild

    OK, now I am going to open up the range shift/final drive gearbox,
    starting with the rockshaft cylinder housing.

    After I got all the bolts out, I needed my forklift to get the housing off
    the gearbox...it must weight 100lb or so. I plan to completely disassemble
    the cyinder, rate-of-drop valve, and position control valve later. The first
    thing to do after the top is off is remove the range shift shaft. The shaft is
    easily broken off due to the weakness of an O-ring groove cut into it. Mine
    is broken as expected. There is a TBN thread posted about this problem
    and a well-documented repair....a quick search did not find it. Maybe
    someone can post the link here and give credit to the poster?

    The 2nd photo shows removing the shifter fork so the shaft can be pushed
    out the side of the case. I am using a drift to pound out the roll pin while
    I hold a magnet underneath. If the roll pin falls into the sump, it will be
    hard to remove. The final photo shows the shaft coming out, and the now
    removed shifter fork. The tire has to come off to get this shaft out.
    Attached Thumbnails Attached Thumbnails -rockshaft_cyl-jpg   -range_shift-jpg   -range_sh_out-jpg  
    See my TBN projects at:
    http://mysite.verizon.net/resyfcgt/

  7. #37
    Elite Member dfkrug's Avatar
    Join Date
    Feb 2004
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    4,443
    Location
    NorCal
    Tractor
    05 Kioti CK30HST w/ Prairie Dog backhoe

    Default Re: John Deere 4300 complete rebuild

    Here I am removing the rear PTO cover. Nice big gears in there.

    Oh my, look at the pieces of clutch friction disk in there! I picked
    out enough fragments for more than one whole disk. There are probably
    enough small fragment to fill a 2-oz cup. These are the fragments that
    adhered to the suction filter above.

    The PTO on this tractor is engaged mechanically and the rental yard has
    had a bunch of them broken when the renter engages the clutch at
    high RPM with a rotary mower attached. Sometimes the whole clutch
    "basket" disintegrated.
    Attached Thumbnails Attached Thumbnails -rear_cvr_off-jpg   -pto_rear_cvr-jpg   -pto_clutch_parts-jpg  
    See my TBN projects at:
    http://mysite.verizon.net/resyfcgt/

  8. #38
    Advertiser kennyd's Avatar
    Join Date
    Jul 2003
    Posts
    11,592
    Location
    Westminster, MD
    Tractor
    John Deere 4110, 455

    Default Re: John Deere 4300 complete rebuild

    Quote Originally Posted by dfkrug View Post
    The shaft is
    easily broken off due to the weakness of an O-ring groove cut into it. Mine
    is broken as expected. There is a TBN thread posted about this problem
    and a well-documented repair....a quick search did not find it. Maybe
    someone can post the link here and give credit to the poster?
    HERE it is...
    KennyD
    www.boltonhooks.com



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

    Simple JDParts Tutorial HERE

  9. #39
    Elite Member dfkrug's Avatar
    Join Date
    Feb 2004
    Posts
    4,443
    Location
    NorCal
    Tractor
    05 Kioti CK30HST w/ Prairie Dog backhoe

    Default Re: John Deere 4300 complete rebuild

    Oh, yes, it was Richard. Thx for tracking that down , Kenny. I bought
    an OEM replacement shaft, mostly due to the concerns of needing a way to
    seal the shaft against oil leaks. Poor design, no question.
    See my TBN projects at:
    http://mysite.verizon.net/resyfcgt/

  10. #40
    Veteran Member JohnDeere4300's Avatar
    Join Date
    Feb 2005
    Posts
    1,564
    Location
    Kentucky
    Tractor
    John Deere 4300

    Default Re: John Deere 4300 complete rebuild

    Quote Originally Posted by dfkrug View Post
    OK, now I am going to drain the hyd oil. I collected about 10 gallons, as
    expected.

    The first photo shows the main drain underneath the middle of the tractor.
    it is connected to the suction pipe/hose that feeds the implement and
    power steering pumps. Very accessible, but very vulnerable, too. Not
    quite as vulnerable as my Kioti's imfamous low-hanging filter, but there
    is no protection from rocks or logs! :-( Anyone break theirs?

    The second photo shows my suction filter. It does not look good! It was
    not that easy to remove because it was covered with metal fragments,
    many more than can be seen here. Something broke inside there, no
    doubt. It could not have been sucking very well due to all these pieces...
    mostly non-ferrous, BTW. Don't forget to check your suction filter when
    doing your 400hr oil replacement!
    I've learned a lot by following this thread.

    That's a lot of metal fragments in the suction filter.... I have checked mine before and never found no metal.

    I still need to check my air intake hose, and thanks for the warning on that!
    John 3:16

    01 JohnDeere4300 "Sync-Reverser", Vertical Exhaust, 2 JD Lawn Tractors, JD Walk Behind.

    430-FEL/ 47-Backhoe/ 5' Bush-Hog/ Single Bottom Plow/ 6' Disc/ Aerator Spreader/ HF Quick-Hitch!

    (Homemade Stuff) BH Thumb/ Log-Hitch/ 10' Boom-Pole/ 42'' Pallet Forks ''FEL Quick Attach & 3PH Quick-Hitch-Attach''/ Ballast Box 1381 lbs./ Aluminum Canopy/ Brush-Guard Mod/ 5x10 Firewood Trailer/ Lawn Striper.

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