John Deere IVT Transmision

John Deere IVT Transmision Problems

I have driven a couple of IVT equipped tractors (6420, 7920 and 7710). We had a 7920 last spring and I can say that this transmission can make a real difference compared to a powershift. However, I suggest that you wait a bit longer before purchasing an IVT equipped tractor because JD still has some issues that need to be fixed on this transmission. Here in Quebec, JD dealers sold many 6420IVTs for snow removal, but snow removal companies were pleasantly surprised when they found that when the weather is too cold, the tractor will not run! move !!!!!!!!!! I suggest you ask for a serious enough test drive to be sure the transmission actually works on those big tractors.

Hello, I will try to quickly answer the question about the similarities. The Fendt transmission is a full CVT transmission, unlike the deeres which is an IVT mated to a powershift transmission. The reason Deere’s have to connect it to a powershift transmission is because Fendt technology is proprietary and I will try to explain that as well as possible. Fendt has patented the technology of achieving a 45 degree angle on the pump shafts, which gives them the ability to have a full range of speeds without having to link to another transmission, unlike the Deere transmission which has 30 shafts. degrees. The reason Deere has smooth shifting is because the transmission is tied to the electronics released fuel system that adjusts the engine revs to eliminate the jerkiness of the power shift behind the IVT. Deeres’s transmission is 88% efficient, while Fendt’s is 98%. I know most people have a good taste in their mouths about Deeres teams, but really most should pay a little more attention to the other colors. There is too much new technology on the market today to be color blind is all I am saying. The Fendt transmission is so simple that they don’t even start the tractor to remove the transmission when it has a problem. Seriously, this Fendt CVT transmission is an incredibly simple and efficient transmission. Agco tractors already have it and the next division is rumored to have it. Mechanical and powershift transmissions are obsolete, as is hydrostatic. AND THE CVT IS NOT A HYDROSTATIC. I do not intend to upset anyone with these comments, only to reveal some information.

Hello, I will try to quickly answer the question about the similarities. The Fendt transmission is a full CVT transmission, unlike the deeres which is an IVT mated to a powershift transmission. The reason Deere’s have to connect it to a powershift transmission is because Fendt technology is proprietary and I will try to explain that as well as possible. Fendt has patented the technology of achieving a 45 degree angle on the pump shafts, which gives them the ability to have a full range of speeds without having to link to another transmission, unlike the Deere transmission which has 30 shafts. degrees. The reason Deere has smooth shifting is because the transmission is tied to the electronics released fuel system that adjusts the engine revs to eliminate the jerkiness of the power shift behind the IVT. Deeres’s transmission is 88% efficient, while Fendt’s is 98%. I know most people have a good taste in their mouths about Deeres teams, but really most should pay a little more attention to the other colors. There is too much new technology on the market today to be color blind is all I am saying. The Fendt transmission is so simple that they don’t even start the tractor to remove the transmission when it has a problem. Seriously, this Fendt CVT transmission is an incredibly simple and efficient transmission. Agco tractors already have it and the next division is rumored to have it. Mechanical and powershift transmissions are obsolete, as is hydrostatic. AND THE CVT IS NOT A HYDROSTATIC. I do not intend to upset anyone with these comments, only to reveal some information.

I have a friend who buys a 7820 with the IVT. I actually went with him and saw the final cut. We were the first group of “Gold Tour” for 7X20 tractors in Waterloo. We had to wait a bit for delivery as there were some last minute changes at the factory. I guess that was to be expected considering the considerable changes in the “TEN” series. I have not driven his tractor in field conditions for a long time, but he is very happy with the tractor and IVT. You haven’t used it much, but it is the main tractor and was used in a variety of applications, including fall tillage. My understanding is that the IVT is only an option on the 7920 and is an option on others. He told me last week that he had done some experiments with the IMS (Implement Management System) and how it can interact with the IVT. Apparently the IMS can return to a transmission position in a somewhat similar manner to the IMS on powershift transmissions on the 8XX0 series. Comparing the IVT on the 6XX0 series and the 7XX0 series may not be a good comparison as I understand there are considerable differences. I think the 6XX0 series is mated to a four speed gearbox, while the 7XX0 series is mated to a two speed gearbox. They told me that the 7XX0 is an American design while the 6XX0 is German. Last year, at an agricultural fair, I saw a cut in the Fendt transmission. The man tried hard to explain it to us, but the language barrier and complexity left me confused. As I understand it, the Deere transmission has a planetary set that goes “underdrive to overdrive” at various rates to achieve variable ratios. Unlike other planetary arrangements, in which the set is free or locked, providing two relationships, this system is variable when the set is driven by the hydraulic system. Taking efficiency into account: at certain points in the range the transmission is essentially mechanical, at other times it is more hydraulic, so efficiency varies. To provide the full range of necessary ratios, this part of the transmission is connected to a more conventional power shift unit. Electronics control the various components, including the engine, so that everything works properly. Efficiency is a relative term. If we want pure mechanical efficiency, other spur gear arrangements are more efficient. If we consider efficiency from the general point of view of operator comfort and productivity, the definition changes.

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Kyle
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