actual use of tier 4

[Got2BTru]

I've only had my Mahindra 2555 HST Cab for a month and have 20 hours. I've had no issues and I was told that Mahindra had a different technology than the others. Time will tell I suppose...

 

[eagle628]

We bought a New Holland T6.165 this spring, first tractor with DEF we've run. Hasn't been any issue, dealer said the tank of DEF would last about two tanks of fuel, but in reality it hardly uses any, it was at about half a tank at 50 or 60 hours, we filled it back up a few weeks ago and haven't added any since. Of course it also gets run at more or less full throttle almost all the time. The gauge is actually a computer estimate of how much is left I guess at current operating conditions. So I can turn the thing on, leave it idling to warm up, then head out and start mowing and suddenly it'll say I have 20% more DEF left than I did five minutes ago. The only difference I've noticed between it and the engine on the older TM165 is the T6 starter cranks longer to get it going.

 

[mapper]

I have had my MF 1734E for a little over a year now, the only problem I encountered was an undocumented requirement that the regeneration cycle requires 1800 rpm, visit from the dealership solved the mystery alarm and all has been fine since. Have not noticed any loss of power during the regeneration cycle.

 

[bwalley]

My LS XG3032 gets delivered this week. I will keep y'all posted.!

 

[Btown]

I've only had my Mahindra 2555 HST Cab for a month and have 20 hours. I've had no issues and I was told that Mahindra had a different technology than the others. Time will tell I suppose...

Mahindra is NOT the only manufacturer to go the EGR/DOC route. AGCO( Massey Ferguson) also went this route with some of their engines. Kubota is also going the same route. It is also not as clean as with the DPF. Lots of people state that a DPF will burn your barn down. The DPF has a heat shield and is not any hotter than any other exhaust pipe on any tractor.

 

[MHarryE]

Hot exhaust pipe is not the concern - it is the hot exhaust that can be directed toward a flammable surface. When my tractor is idling like it would be in a shed, the exhaust temperature is in the 400 F range. Auto regens reach the 1100 to 1200 degree range which if out putted against many materials will start a fire. I recently had to do a parked regen and the exhaust temperature reached 1122 F which, if sitting in my machine shed with the doors open, is still pretty darn hot.

DPF cleaning is intended to clean the ash accumulation that eventually gathers to the point where it causes too much restriction. There are shops all over the country that clean DPFs. However a DPF can get too contaminated to be cleaned. That happened to my tractor when seals on the turbo failed and the DPF was soaked. Replaced under warranty.

The DPF cleaning sites I have searched will only give a rough cost estimate due to variations in dirty DPFs. I believe their base charge is $200 but can get significantly higher if the substrate is oil contaminated.

 

[MessickFarmEqu]

Kubota is also going the same route.

FYI. While Kubota builds DOC engines, to this point they are not using them in their tractors. It seems their opinion is that a DOC is not a good choice for a tractor application.

 

[smokin aces]

I'm gonna buy a new tractor in the spring, thats why i joined this forum to learn all i can. from what i've learned so far i'm concerned about this tier 4 stuff, I went by a Mahindra/ NewHolland dealer the other day and the guy there spent some time on the subject. here's what he said he opened a N/H hood to show me a can/tank. he said that this system you gotta run the engine at high rpm's all the time. if you dont you'l have more regen cycles the more regen cycles means the porcelen core will were out stop up, to replace is 3,500. high rpm's means poor fuel economy and more ware and tare on the engine. also he said not to park them in a hay field or a barn cause thay will catch on fire. then we moved over to the Mahindra he said they don't use that system or the fluid system, they use a really high preassure ingector pump that super atomizes the fuel for cleaner burning. so you don't have to deal with or mess with anything. just use it like the old tractors. not 2 days later i whent by an old frend who has a large farm, to get some input from him. he has/had a really big 100+ case cab, he said it burned to ground in his hay field. i told him what i learned at the dealer and he said it did have that can on the engine, i call it a can cause i don't know the right term. he said someone he know's had his barn and tractor burn to ground. go figure.

 

[oldpilgrim]

then we moved over to the Mahindra he said they don't use that system or the fluid system, they use a really high pressure injector pump that super atomizes the fuel for cleaner burning. so you don't have to deal with or mess with anything. just use it like the old tractors.

yup.....

 

[Utopia Texas]

I'm gonna buy a new tractor in the spring, thats why i joined this forum to learn all i can. from what i've learned so far i'm concerned about this tier 4 stuff, I went by a Mahindra/ NewHolland dealer the other day and the guy there spent some time on the subject. here's what he said he opened a N/H hood to show me a can/tank. he said that this system you gotta run the engine at high rpm's all the time. if you dont you'l have more regen cycles the more regen cycles means the porcelen core will were out stop up, to replace is 3,500. high rpm's means poor fuel economy and more ware and tare on the engine. also he said not to park them in a hay field or a barn cause thay will catch on fire. then we moved over to the Mahindra he said they don't use that system or the fluid system, they use a really high preassure ingector pump that super atomizes the fuel for cleaner burning. so you don't have to deal with or mess with anything. just use it like the old tractors. not 2 days later i whent by an old frend who has a large farm, to get some input from him. he has/had a really big 100+ case cab, he said it burned to ground in his hay field. i told him what i learned at the dealer and he said it did have that can on the engine, i call it a can cause i don't know the right term. he said someone he know's had his barn and tractor burn to ground. go figure.

I have owned dozens of diesel units in the past 50 years and have no problems with the NH Tier 4 set up. Most diesel engines are designed to run most efficiently and at the best torque range at 85-90% throttle and when plowing, disking or shredding one should choose a gear that places the tractor in that peak torque range. If you are constantly running a diesel tractor at slow rpm's to do a certain job you most probably need a different type of machinery to do that job. Diesel tractors are designed for high torque, high rpm jobs. Match the machine to the job.