We're getting way complicated here, that may confuse people. Mr. Walker wanted to know if the M60 series is tier 4 and yes it is. And yes it has a DPF. From the start Kubota has said they committed to the DPF solution because they feel that the mass EGR and solutions others are using can cause excess under hood heat.
I can't say if it does or doesn't, but that is what Kubota had stated.
Yes, there's a lot of confusion. As I read Eddie's original question, he wanted to know if every 60 series Kubota had the Tier4 emissions equipment - which is DPF (Diesel Particle Filter) and a computer to control the emissions & injectors. As far as I know they all do have those things. And nobody has said any different.
He also asked if the 40 series made from 2007 to 2012 was Tier3. Well, it was and it wasn't.
What the 40 series was, was Interim Tier4....which is sort of halfway between Tier3 and Tier4. And it got that way using old fashioned EGR technology which met the specs for NO (Oxides of Nitrogen) but also made those Interim Tier4 engines smoke a lot and burn a lot of fuel.
But at least they didn't have DPF & computers.
Frankly I think Eddie wants what a lot of people say they want - a simple old fashioned diesel with lots of gears and no fancy anything. Something they can wrench on & already understand.
For Kubotas, that would be the 30 series or early 40 series. Good luck finding a low hour one.
Paystar, yours is the first comment I've ever heard about excessive under hood heat. Where did you hear that? Reliable source?
EGR should be cooler than DPF. Not that it matters, since I doubt that anyone offers an stand alone EGR type emissions control on a new tractor anymore. EGR alone can't possibly meet today's Tier4 specs.
Big diesels are now coming with DPF & DEF both. Mercedes has that. Very clean burning and high efficiency. Two systems and two computers, but no problems. So it can be done.
rScotty