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  1. #21
    New Member
    Join Date
    Nov 2012
    Posts
    12
    Location
    IN
    Tractor
    JD4120

    Default Re: Beware John Deere 4*20 series owners--antifreeze leak

    When the service tech called me with a quote, I asked him how or why this would happen. Just trying to pick his brain, he mentioned that it could be a number of things and that JD has a specified torque pattern for the timing cover and the oil pan. My thinking was that if I spend my time to do it, and it still leaks, I'm gonna be p i s s e d off twice. Somethings are worth the money......

  2. #22
    Gold Member Cidertom's Avatar
    Join Date
    Dec 2005
    Posts
    472
    Location
    Benton Co Oregon
    Tractor
    JD 4520, 2305 Aktive snow-trac ST4

    Default Re: Beware John Deere 4*20 series owners--antifreeze leak

    Quote Originally Posted by D4120 View Post
    What is a DTAC?
    Dealer Technical Assistance Center.
    One of americas vanishing breed: Volunteer Firefighter

  3. #23

    Default Re: Beware John Deere 4*20 series owners--antifreeze leak

    I had my head gasket replaced on my 4200. It ran around $2300. I don't remember what it had for hours at the time of repairs. It was hard to take but had to have it done.

  4. #24
    Platinum Member
    Join Date
    Mar 2008
    Posts
    599

    Default Re: Beware John Deere 4*20 series owners--antifreeze leak

    Quote Originally Posted by yod67 View Post
    I had my head gasket replaced on my 4200. It ran around $2300. I don't remember what it had for hours at the time of repairs. It was hard to take but had to have it done.
    That sounds like a pile of money for the task provided. I think I would have wrenched that one myself. The computers these days practically take you by the hand and explain what to do next. How did we ever live without them ?

  5. #25
    Gold Member
    Join Date
    Nov 2008
    Posts
    403
    Location
    Maine
    Tractor
    '09 JD 5105M Cab & '05 JD 4720 Cab

    Default Re: Beware John Deere 4*20 series owners--antifreeze leak

    I clock about 600 hours a year on my '05 4720 and never had a coolant leak. That and fuel are about the only fluids that never leaked though, oil is another matter...
    JD 5105M & JD 4720 Cabbies w. Shoule reversible snow blade/Shoule rear snowblower; Pronovost blower; backhoe and some attachments I have no idea what they are for.

  6. #26
    New Member
    Join Date
    Aug 2013
    Posts
    1
    Location
    Erie pa
    Tractor
    4320

    Default Re: Beware John Deere 4*20 series owners--antifreeze leak

    I have a 2007 4320 that had to have the engine replaced at 500 hrs now the new engine is leaking antifreeze. Only 1000 hrs on the whole tractor

  7. #27
    Veteran Member sunnyside360's Avatar
    Join Date
    Aug 2006
    Posts
    1,354
    Location
    Central PA
    Tractor
    JD 3720 Cab, JD 4320, Kubota M110X Cab, Kubota ZD331-72

    Default Re: Beware John Deere 4*20 series owners--antifreeze leak

    Quote Originally Posted by International man View Post
    I have a 2007 4320 that had to have the engine replaced at 500 hrs now the new engine is leaking antifreeze. Only 1000 hrs on the whole tractor
    Where is it leaking? Are you sure the hose clamp(s) doesn't need tightening.

  8. #28
    Platinum Member JD 4520's Avatar
    Join Date
    Apr 2011
    Posts
    834
    Location
    Brinnon, WA
    Tractor
    John Deere 4520

    Default

    Quote Originally Posted by International man View Post
    I have a 2007 4320 that had to have the engine replaced at 500 hrs now the new engine is leaking antifreeze. Only 1000 hrs on the whole tractor
    What happened that caused the engine replacement?
    Gary

    JD 4520, 400X FEL, Frontier Front Blade, Box Blade, Rotary Cutter, Landscape Rake, 48" Wildkat Grapple and PHD

  9. #29
    Veteran Member sunnyside360's Avatar
    Join Date
    Aug 2006
    Posts
    1,354
    Location
    Central PA
    Tractor
    JD 3720 Cab, JD 4320, Kubota M110X Cab, Kubota ZD331-72

    Default Re: Beware John Deere 4*20 series owners--antifreeze leak

    Quote Originally Posted by sunnyside360 View Post
    Where is it leaking? Are you sure the hose clamp(s) doesn't need tightening.
    Additional Info: Both of my 2007 and 2010 4320 open station tractors leaked anti freeze at the hose connections. Both were easily fixed with tightening the clamps. Sometimes it is difficult to actually trace the leak but it's really easy to just tighten all hose clamps and at least eliminate that as source of leak, or fix the problem. I'd do that first if you haven't already done it. I also had a leak at front of the 2007 4320 (different time) near head gasket but don't remember details and that was covered under warranty. May be similar to yours.
    Last edited by sunnyside360; 08-26-2013 at 11:11 AM.

  10. #30
    Silver Member
    Join Date
    Nov 2003
    Posts
    132
    Location
    Western Wisconsin

    Default Re: Beware John Deere 4*20 series owners--antifreeze leak

    Tractors aren't the only equipmet with this problem. I had a Chevy S-10 p/u. Was a 1980's something. Engine failed. Diagnosis was the antifreeze was 3 yrs old, had acidified, and ate thru a gasket. The engine design had only a gasket separating coolant channels from oil channels, as I recall. The a/f leaked into the oil, and eventually ate the bearings. When they dropped the oil pan, the bottom was filled with glitter -- metal particles that had been chewed up by the a/f. Chev said sorry, out of warranty. Repair shop said they had fixed couple dozen with the same problem. Always charming to find these things out after it happens to you. Today's internet helps, but no always.

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