DPF

[RB5]

My Deere 4044M has it. I have no issues with it as long as I run at 1500 rpms most of the time. That is easy to do with the large number of gears to chose from. Only issue I had was when my FIL borrowed it and did not understand the regen feature. He told me it got louder. Of course he is used to the older tractors that did not require running at nigher rpms. I got it back and didn't think it was going to get out of regen, but it eventually completed.
My tractor rarely goes into regen. It only happens once in a long while if I idle at low rpms while getting off to move something or mess with an attachment. Even then it usually doesn't happen. I would not be worried about it. Just read the manual and follow what it says. I did have a couple of occasions where I just had to park the tractor and let it run after I was done doing my work before I got used to the fact I could not idle at low rpms for a long time.

 

[RB5]

Interesting, on my John Deere, the RPM locks at 1,500 for 15-20 minutes during regen. Can't manually throttle it down.

Same with my 4044m if i don't run at 1500 plus enough.

 

[Ridersupfarm]

The wife and I went to a town nearby for a Dr appmt and there is a pretty big Kubota dealer there. I said to her that one of these days I'm gonna stop in there instead of talk about it. But one question I have to ask of them might be better here: "When does DPF come into the scene when buying a new tractor?" It seems I've heard that it is a function of HP? Is this true of all manufacturers?

I have to say outright I would NOT buy a new tractor that required DPF. And I sure the heck would spend mega bucks and void the warranty with a defeat mod. So, folks, what's the skinny on new tractors and DPF?

I have a 2019 Kubota M70/60 equipped with DPF. The regen light would come on every 10-12 hrs of operation. If mowing or baling, no problem because you have the revs up for a prolonged period and you can keep working interrupted with no issues. However, that pesky light can come on just when you are ready to put the tractor away or are doing low rev operations like loading. Then you may have to sideline the tractor, put the revs up and wait. Last year I was buying antigel for my tractors and grabbed what I thought was two qt bottles of Lucas antigel when one was actually Lucas injector cleaner and upper cyl lube. Rather than return it I added the cleaner to my fuel. Twenty hrs later the regen light had not come on leading me to think it broke. I've been using this product since last November and it has doubled the time in between regen cycles. You might want to give it a try.

 

[Rdrcr]

If you're not looking to buy right now, it is possible that the DPF and DEF requirement will be removed by the EPA within the next year or so. It's been in the news as the current POTUS is trying to remove certain rules from the EPA.

Sigh. See post #68.

Mike

 

[Dftodd]

If you want to avoid a DPF shop for tractors below 25 hp or older than 2014. I had bad experience with a diesel pickup with DPF so I held the line at 25 HP when I bought my new tractor. It's adequate for me.

If it hae a particulate filter but just runs higher emmisions temps, thats the way to go if you want/ need higher horsepower.

Although the tractor dealers have pretty much perfected the regen cycle now.

The biggest issue i've had with def systems is customers running the system out of def fluid and keep going.

Deere's especially seem to burn up the nox sensors when someone does that.

I just figured out how to nanny our equipment to alert me via email if a customer runs the Def system out of fluid.... so.. maybe I'll be able to recoup some of my costs

 

[SpaceBuckaroo]

My 2025 LS MT357 does not require DEF. I believe it is 57 HP. It does have a regeneration process that it will eventually go through.

 

[Eagle1]

The 2025 LS MT357 tractor uses a Tier 4 emissions system, consisting of a Common Rail Direct Injection (CRDI) diesel engine with a Diesel Particulate Filter (DPF). This system is standard on diesel engines over 26 horsepower to meet stringent EPA regulations.

Same L3C19-T, 3-cylinder, liquid-cooled, TC, CRDI diesel engine as my XG3135 just tuned to 57

It does NOT use DEF fluid (urea). Just a DOC and DPF filter.

 

[panamaguy]

My B7100 is just the physical size and HP range I need. I can get it past walk through gates and between trees in the forest. The rears are filled (CC) so it is fairly stabile and we have some pretty irregular contour and slopes. The BH comes off in and the 3 point back in place in a few hours and I have a bunch of attachments if it's worth the change over. So I guess I don't have to worry about DPF/DEF. If I went for new I definitely need the backhoe that is removable so I can use the 3 point stuff.

Frankly, if I could find a small shop or competent self employed guy I'd have the engine rebuilt. I've been into the gear box a few years ago and it literally looks like new. The clutch/PP/bearing/pilot was done a while back. It's got a zillion hours on it and the compression is down but still has sufficient power although starts hard in the cold. And I've had the unit since the early 90's so I've got a soft spot in my heart for it anyway.

It's a tough decision on which direction to go.

Wow. Your 7100 looks just like mine except mine says B7001 as it started in Vietnam as a rice paddy tractor with a roto tiller on the back. A Asian guy imported them to Canada where he mounted a FEL which looks exactly like yours and then when i retired i hauled it down to Panama where it lives a pretty easy life now on my 5 acres. Been looking lately as i needed more fuel filters and having trouble finding the original size that slips into the filter housing. PS mine could use paint justclike yours. Guessing mine is likely late 80s maybe early 90s.

 

[JRH02]

Wow. Your 7100 looks just like mine

I'm not sure I posted a pic but here she is - no big deal to look at as its lived its whole life outside.

 

[panamaguy]

They are so cool.. Mine came with a roto tiller. I did not know there was a backhoe attachment. If its ok tomorrow i will measure the fuel filter and if you have a spare in stock and measure yours if its the same maybe i can get a part number from you so i can order some. Found some close but not totally correct. After moving here and realizing how handy a hoe would be i bought a used IHI 15NX. another great machine from Japan powered by Yanmar 3 cyl almost the same as the 7100 Kubota motor