Just took my 4120 to shop for coolant leak. After reading some posts, this appears it might be a leaking timing cover gasket. Just wondering if anyone has had luck getting JD to cover the cost since it's a known issue with the gasket on the 4120. It's an '06 with 650hrs. I know it's out of warranty and I may be forced to eat it but I'm gonna try. Any suggestions??
JD 4120 antifreeze leak
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WilliamBos
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Unless there was some kind of recall, you will have to cover it. You are just too far out of warranty.
WilliamBos
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Apparently, if atleast 1 other person posts about it, it may be a known issue.
Red Horse
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I do believe there is a thread going about a 4x20 with similar issue.
I just googled the issue and it returned a few different sites and comments from others with the same problem. I've not heard for sure from the shop but I'm afraid this may be the case with my 4120. I couldn't pinpoint the leak, just that it was originating from above the water pump somewhere and running down the face of the block. Sounds like a simple fix......wrong, look at this image posted by another. If there is a thread going, where would I find it?
http://www.********************.com/equimages/5190988.jpg
http://www.********************.com/equimages/5190988.jpg
WilliamBos
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Put some spaces between the words in the link, we can put it back together.
If you google antifreeze leak 4120, click on the 3rd link it returns and you'll see a picture someone has posted of their 4120, less the ENTIRE front end. ****, that seems like a lot of work to repair a coolant leak......just saying. Thanks guys for the replies.
WilliamBos
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I would ask for sure, cannot hurt. You getting a quote on the repair cost?
Agent Blue
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Sounds like there is a real problem and alot of $$$$$ to repair the defect. Anyone know if they substitute a different cover ? Maybe it needs one with an o ring type seal. I just looked at a used 4120 and outside of being older than I wanted it looked in good condition. ( should have checked for wet spots onthe block ).
Rather than be faced with a two grand plus bill for a three dollar part repair I would get the repair manual and spread it out in the shop. The NH dealer threw in a full repair manual with my 55 purchase. I know they can be quite expensive.
Rather than be faced with a two grand plus bill for a three dollar part repair I would get the repair manual and spread it out in the shop. The NH dealer threw in a full repair manual with my 55 purchase. I know they can be quite expensive.
Just got a call back from the dealer. $1378 to repair, unless the timing cover is warped and needs replaced, if so, add $200. Called JD, no luck as figured. I've been very pleased with my '99/345 and '06/4120; however, it appears as though JD is ignoring the problem that exists. If this is happening to new 4x20's, then it must be a manufacturing issue and not the fact that mine is 6 yrs old with 650 hrs. Someone on here posted it happened to their 4720 with 170hrs. I'm not ready to jump ship and go to another color tractor yet, but if this kind of thing should happen again, I may consider it.
So the timing cover was the culprit and it has been repaired. Service tech at my dealer was most helpful and Deere came through to help cover cost. Initially quoted 1378, ended up being 403 my portion. Renewed my faith in the green tractor company. They are trying to sell me a 4720 with a cab, gonna demo next week. Any suggestions or opinions on the 2012 4720?
I'm new here so may not get this right. I also have a coolant leak on my 4720. Seems like it was coming from the timing cover as well. I decided to wrench it myself. You have to take the front off including the axle. Also have to take the pan off. However as I learned later the engine does not need to come out of the tractor. John Deere service tech 3 different ones were not correct. (Had the engine out then realized the bottom two bolts will allow the pan to come loose. Engine back in now and timing cover off.) I get some sealant from Deere today and put it all back together this weekend. Will post a pic if I can figure out how to do this on my phone.
