The DPF stops soot from entering atmosphere, that is what it's designed for. It gets dirty, and then the tractor senses the soot level and wants to burn the soot off when it gets to a certain level. Easy to understand. BUT it requires operator knowledge; and does NOT require idiocy; in fact ignorance, neglect, idiocy and stupidity are the nemesis of the DPF.
Can it be taken off? Absolutely. Your L3901 will then have approx 18 horsepower. Removing it will derate the engine to 50% power. It is gutless, a BX1500 will out work it. Trust me, experience speaking. Can it be removed legally? No, it can't. Why would anyone want to? The system works fine as designed. Learn how to use your tractor and understand what the DPF does and you will have zero problem with it.
Big trucks have had DPF's since 2007.5. Pickup trucks have had them. Cars have had them. It's no big deal folks, until you decide that you don't need it or don't want it, then you get to spend thousands on delete kits and get the feeling in the back of your mind that your tractor is now operating illegally.
Something else worth mentioning. I am hearing that the local diesel shop has been approached by the US EPA officials and there is an ongoing investigation into how many and what trucks (pickups and 18 wheelers) have been "deleted". Apparently a DOT officer stopped a Dodge truck for speeding and asked the driver why his truck was smoking so much. Driver said that the DPF was removed, hence the smoke. DOT wanted to know how, when, where..info was given up, and the shop got a "visit". This is not the only one either, they are coming down hard on shops and owners who are deliberately removing emissions equipment. IIRC the fine for individuals is something like $1040 first time, and goes up. For a business, it's $10,000 first offense + other "corrections" have to be made. If they find out that a shop did ONE DPF delete, they have probable cause to ask for work orders for the last however many years; and they'll find more to fine the shop for. This is what I am told by the local shop owner who is going through this mess. My shop is doing things the right way-repairing stuff per Kubota's instruction. I have had people ask me about doing a programmer and "kit" on some of the M series tractors, but per Kubota, I will not install then-nor will I endorse their usage. Remember, these "kits" will generally increase horsepower and torque as well. Also remember that the tractor's only designed to sustain X amount of power; and Kubota reserves the right to deny repair assistance if the aftermarket part is the cause of the failure. There was a memo sent out a while back in reference to this issue. I am hearing that there are also some L series programmers now too, but I haven't seen them yet. Same as the M's, the programmer itself won't hurt your warranty but if the programmer's resulting power increase is the cause, you bet they're gonna tell the owner to pound sand.
The question was for the CCV freezing up. It can under special circumstances, and those are pretty rare unless you live North of the US/Canada border. There was a kit to address this but it is ONLY for cold climates. In areas that are temperate-most of the USA-it is not needed, and the dealers were told to leave the CCV alone in those climates.
Can it be taken off? Absolutely. Your L3901 will then have approx 18 horsepower. Removing it will derate the engine to 50% power. It is gutless, a BX1500 will out work it. Trust me, experience speaking. Can it be removed legally? No, it can't. Why would anyone want to? The system works fine as designed. Learn how to use your tractor and understand what the DPF does and you will have zero problem with it.
Big trucks have had DPF's since 2007.5. Pickup trucks have had them. Cars have had them. It's no big deal folks, until you decide that you don't need it or don't want it, then you get to spend thousands on delete kits and get the feeling in the back of your mind that your tractor is now operating illegally.
Something else worth mentioning. I am hearing that the local diesel shop has been approached by the US EPA officials and there is an ongoing investigation into how many and what trucks (pickups and 18 wheelers) have been "deleted". Apparently a DOT officer stopped a Dodge truck for speeding and asked the driver why his truck was smoking so much. Driver said that the DPF was removed, hence the smoke. DOT wanted to know how, when, where..info was given up, and the shop got a "visit". This is not the only one either, they are coming down hard on shops and owners who are deliberately removing emissions equipment. IIRC the fine for individuals is something like $1040 first time, and goes up. For a business, it's $10,000 first offense + other "corrections" have to be made. If they find out that a shop did ONE DPF delete, they have probable cause to ask for work orders for the last however many years; and they'll find more to fine the shop for. This is what I am told by the local shop owner who is going through this mess. My shop is doing things the right way-repairing stuff per Kubota's instruction. I have had people ask me about doing a programmer and "kit" on some of the M series tractors, but per Kubota, I will not install then-nor will I endorse their usage. Remember, these "kits" will generally increase horsepower and torque as well. Also remember that the tractor's only designed to sustain X amount of power; and Kubota reserves the right to deny repair assistance if the aftermarket part is the cause of the failure. There was a memo sent out a while back in reference to this issue. I am hearing that there are also some L series programmers now too, but I haven't seen them yet. Same as the M's, the programmer itself won't hurt your warranty but if the programmer's resulting power increase is the cause, you bet they're gonna tell the owner to pound sand.
The question was for the CCV freezing up. It can under special circumstances, and those are pretty rare unless you live North of the US/Canada border. There was a kit to address this but it is ONLY for cold climates. In areas that are temperate-most of the USA-it is not needed, and the dealers were told to leave the CCV alone in those climates.
