Any high hours with tier 4 emissions?

Ive been considering a new tractor thats 4wd with a loader in the 40-50hp range. Mainly looking at the John Deere 4044 and kubota L4701 as both of there dealers are local to me and have good service.

But on the newer units they have the dpf systems on these tractors and Im just curious if any of you have racked up a lot of hours 1000+ on the new emissions equipment with little issues?

All but 2 of my semi tractors take DEF. I spend more on those dpf systems and sensors than any other repair.

As a dealer have several ,( more than 30) Kubotas with the emissions set up out and running over
1000 hrs. The hour hour units are ones that get hard running are the least troublesome. The home
owner that putters around and does never open it up and heat the tractor up are the ones that have
to regen. Pretty good warranty on you emissions set up. Get your best deal and go for you will like
the Kubota but nothing wrong with the deer.

As Jim said the harder and longer you run them the better luck you will have.

There is a difference between Tier 4, and final Tier 4 engines. The final Tier 4 engines are very clean
burning, and do a "Regen" about every 50 hours to clean the particulates. The engine get very hot, and the
"Regen" lasts about 20-30 minutes. It is recommended not to park the tractor in a building during the
process. Never no problems.

I am not posting this to throw a wrench in jm.s world.
This is just information and an opinion of a person
who I feel knows a lot about things and works real
world repairing stuff. Yes, he is on YouTube but I have
experience in mechanical repair the first 20 years of
my career life and I can tell you this guy is above
average. Skip ahead to the 2.50 minute mark, there
until the 15 minute mark he is going on about his
dislike for reman engines and the reasons why. I think
if you watch that part it will show you that he has
some definite knowledge and he has a worthy
opinion. At 15 min to the end is where the most
details are given that may apply to your question
above. Now I will say that he is a little more vocal and
..wound up.. in this video compared to his normal
demeanor. I will warn you there is some minor
profanity in it 4 or 5 places if that kind of thing bothers
you. Another thing that struck me he pointed out
during disassembly of the tractor with the engine
problem is due to design the difficulty he had
removing the shaft that drives the front axle. Which he
needed to do to open the bottom of the engine to
diagnose the gear drive train problem. ..who would
design an engine with the cam inj. pump drive gears
on the back of the engine in a tractor??.. On that
tractor you have to basically unbolt and pull the front
axle forward to pull it out. My understanding on a
similar sized Deere it pulls out basically like a rear
drive pickup drive shaft. I understand none of this
may apply to the model you may be looking at. Also
chances are with good maintenance many of these
items may never give you trouble. I always revert to
the fact that anything man made can and will break.
Hope this helps one way or another. Only opinions
based off some experience.
Kabota stuff

Warren tells it like it is. Lol, but he knows his stuff.

The cam and pump gears are at the back of many Diesel engines now days. With the ultra high injection pressure they use, the impulses from the pump cause the crank shaft to break. So drive it off the back and you have the flywheel there to dampen things.

JM,
What if I never liked the taste of deer meet?
You are right, last time I pushed snow I ran my Kubota at 2000 RPM. Exhaust was very clean.
george

(quoted from post at 21:57:59 02/21/21) The cam and pump gears are at the back of many Diesel engines now days. With the ultra high injection pressure they use, the impulses from the pump cause the crank shaft to break. So drive it off the back and you have the flywheel there to dampen things.

Click to expand...

re you saying that injector torque pulses are greater than the torque pulse from the front cylinder firing on power stroke?