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 08-18-1999, 00:00 Post: 7075
Tim



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 turf tearing on 4300 JD

Has anyone heard the latest on the turf tearing issue? Talked to my salesperson the other day, she said it was the first time she has heard of this issue! I love my JD, but this thing will massacre the lawn if turned past 3/4 way left or right (in 2x4, with turf tires, with and w/o brakes applied)Also, has anyone with the turf tires experimented with side to side rim/tire swaps to make the tractor a little wider so it doesn't feel so tippy on sidehills?






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 08-19-1999, 00:00 Post: 7078
MichaelSnyder

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 turf tearing on 4300 JD

Tim,A 4300 is NOT exactly a light "lawnmower"! This may be part of the "compremise" of having a "do it all" tractor!!...IMHO, you are dealing with three main issues. You may also notice that this problem is posted mostly by JD4000 guys, and some NH. Keeping that thought in mind, I''ll let you answer your own question. First off, What direction are your rear wheels PUSHING the front of the tractor? Secondly, how much WEIGHT & SPEED is applied to that direction of PUSH? Thirdly, notice this wasn't as much a problem on the old tractors that only steer about "3/4" as sharp as yours? FRICTION is what allows anything to change its current direction of travel. Your turf is what offers that friction, and is limited by its type, soil and moisture content, if that limit is exceeded, damage will occur. No different than a race car sliding off the track in a curve. The limit of available friction was exceeded. This isn't a problem on the $899 lawnmowers, because the turf's available friction is higher than the tractor can offer. My recommendations are to (1.) slow down when turning, (2.) Don't steer past 3/4, (3.) Trade it in on an older unit or one that doesn't steer as hard. I'm struggling not to mention a particular brand, especially after this weeks "Holier than thou" Postings for that brand.






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 08-19-1999, 00:00 Post: 7089
Tim



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 turf tearing on 4300 JD

Ok, let me rephrase my question so I don't sound like a mowing hotrod! When this is happening, I can be traveling at a speed just SLIGHTLY faster than the speed of drying paint, so that is NOT the issue. The issue is that the outside tire appears to be toed-in way too much after the point of 3/4 turned or more, which on the JD is approximately 40-45 degrees in either direction (I also believe the specs on the JD 4300 list the turn at 55 degrees max in either direction). This tearing can be observed in a left or right turn. This is also apparent if on gravel and will also leave a nice black mark on blacktop if turned too sharp in the driveway. (Thanks for the lesson on friction, I must have missed that lecture in physics class) The real reason that I posted this question, is to get some feedback from another 4000 series owner, not a used-tractor-wannabe-a-new-one owner. And yes,I did trade in my Boomer to buy this 4300, and yes, this 4300 is 10 times the unit that my Boomer was. If you are responding to these postings, let's give REAL answers and skip the "NO DUH" answers.






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 08-19-1999, 00:00 Post: 7092
Mike



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 turf tearing on 4300 JD

This problem is not uncommon with the 4000 line of JD compact diesels. My 4400 with R4 tires will tear out K31 fescue and kill it where I make a turn that is not real tight nor under much speed. I have to agree with another poster that the weight of the tractor has a lot to do with it--with a mowing deck, your 4300 weighs over 3000 pounds. While mowing or doing loader work over a yard, I have to be extra careful in the turns. It is an all-purpose tractor. A previous post mentioned that JD was working on a fix, but I am a little cynical on that. Kubota offers some models with bispeed turning for their front wheels. The only solution of which I am aware is to slow it down and increase the radius of your turn. I wish there were a better answer.Mike






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 08-19-1999, 00:00 Post: 7094
MichaelSnyder

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 turf tearing on 4300 JD

Tim,Sorry for the misinterpretation of your question, Or knowing your personal experience in tractors, Physics & Steering Geometry. No-one here appreciates the attitude. The CTB has alot of beginners in the Compact arena, who understandably know very little about what they just spend a ton of money on. You didn't mention you had previous experience or a Boomer, which appearantly didn't have this "problem". I'm not sure how to answer your question, based upon your rude & "know it all" response. I don't think anyone here can read minds at the moment. If your Boomer create this effect, your right, I don't know what to tell you...And apologies for posting. I also don't know what to tell you, because every tractor I've ever seen and used, ranging from a 150hp International down to a 12hp Allis Chalmers has some degree of toe in & positive camber....or is it negative? I'm not sure. I will also mention that I notice this problem is worse on 4wd's with sharp turning radius's. FYI, We have an old AC & a NEW JD 4100HST, of which the 4100 with R4's creates the same effect. Sounds to me, like your answer is in your second sentence. As you would say...........NO DUH!!






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 08-19-1999, 00:00 Post: 7095
MichaelSnyder

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 turf tearing on 4300 JD

Tim,Sorry for the misinterpretation of your question, Or knowing your personal experience in tractors, Physics & Steering Geometry. No-one here appreciates the attitude. The CTB has alot of beginners in the Compact arena, who understandably know very little about what they just spend a ton of money on. You didn't mention you had previous experience or a Boomer, which appearantly didn't have this "problem". I'm not sure how to answer your question, based upon your rude & "know it all" response. I don't think anyone here can read minds at the moment. If your Boomer didn't create this effect, your right, I don't know what to tell you...And apologies for posting. I also don't know what to tell you, because every tractor I've ever seen and used, ranging from a 150hp International down to a 12hp Allis Chalmers has some degree of toe in & positive camber....or is it negative? I'm not sure. Anyway, I will also mention that I notice this problem is worse on 4wd's with sharp turning radius's. FYI, We have an old AC & a NEW JD 4100HST, of which the 4100 with R4's creates the same effect. Sounds to me, like the answer your looking for, is in YOUR second sentence. As you would say...........NO DUH!!






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 08-19-1999, 00:00 Post: 7097
Ted



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 turf tearing on 4300 JD

Tim:As a landscaper with a fleet of 'Orange' compacts I can tell you it is NOT a problem peculiar to only one colour. The problem is like others mentioned, friction, the fact of the matter is, in order to make these things manouverable, the manufacturers have designed them a)to turn way sharper than any turf can handle, and b)with power steering, it is a 'double whammy'. The down & dirty solution is....turn more gently (3 point turns if necessary) and ALWAYS at a speed just a little FASTER than paint dries, NEVER with the machine standing still. As for the 'toe in' almost ALL wheeled equipment turns the inside wheel tighter in a corner than the outside tire, it is just a result of the geometry involved, etc.






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 08-19-1999, 00:00 Post: 7099
Steve



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 turf tearing on 4300 JD

The weight of the tractor should not be blaimed for this problem. My JD1070 4WD with mid-mount 72" mower is over 3600 lbs and I can turn sharp at a high mowing speed with no trouble at all. You say your tractor makes a black mark on pavement when you make a normal turn? Something needs to be adjusted!






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 08-19-1999, 00:00 Post: 7104
Tom



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 turf tearing on 4300 JD

I had posted a question regarding turf tearing with my 4300. I also received many responses that I wasn't driving correctly. When I went to my Deere dealer with a complaint he found out that Deere is in the process of providing a new front end on all 4000 series tractors as they blew the design. I was told that this would be available in Oct/Nov. This was according to the head of North American marketing for the 4000 series tractors. I would suggest you contact your dealer. It is not you.






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 08-19-1999, 00:00 Post: 7110
Tim



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 turf tearing on 4300 JD

Ok, ok, point well taken! I take back all the attitude, I just got carried away. I should have given a little more info the first posting of mine about the specifics on the tearing problem. Either way, I appreciate all the responses and hope that someone will also give me some feedback on the tire/rim swapping question that I had also. (my background also has me on A/C tractors on my Dad's side, and IH & Farmall on my mom's side with a combined total of 23 tractors presently that I have the opportunity to drive and yes, a couple of them DO toe-in a little, but none of them were targeted by the marketing divisions of their respective companies to perform lawnmowing duties as is the 4000 series tractors) Now that I think about it, I really hated that physics class anyways.






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Discussion Boards > Active Subjects > Messages as Posted > John Deere Review Forum

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