Kabota 3301

   / Kabota 3301 #1  

Qwiksting

New member
Joined
Dec 1, 2020
Messages
1
Tractor
L3301
.Goodmorning all, this is my very first post. Take it easy on me, I have owned my tractor, L3301 with a front end loader since March of 2017. I got it new, as I live in the country, 5 acres, and have small jobs I do around the property. I have enjoyed using it, and I must say, I really used the forklift a lot more than I thought. I have a 5 ft bush hog and a post drill attachment. I have only 207 hours on it. That brings me to the reason of this post.

I keep my tractor in a metal shop (30x40) so it stays out of the weather. I have had it serviced by Kabota at 50 hours, which I did not get until July 2017. Since then I have not had it serviced, but do the daily regular checks one would do when operating it. Since I haven稚 used it a lot this past year, I periodically start it and let it run for about an hour, to charge the battery mostly, but to get fluids moving around. I hav in the past done a è¿*egen? but have had no trouble out of it, until......2 weeks ago, I started it, to charge battery as it was getting cooler here. I noticed a leak near the front around the connections of the front end loader, but under the radiator area. It was slick, oily feeling fluid. I thought it was an oil leak, until I noticed a lot of smoke coming from the muffler. Apparently, after further examination, I found out that diesel fuel was spitting out of the muffler. Not a lot, but enough that it would get on the cross arms and flow to the middle and drip. It runs fine, good power, but the smoke concerns me, and it hasn稚 asked for a regen. I took it to Kabota yesterday for a 400 hour service, (I am at 207 hours) but I felt changing fluids and letting the technicians do a once over wouldn稚 hurt. I also told them about the leak and showed them where on the muffler, you could tell diesel mad it look darker and wet.

What could that be, because the tech had no answer. I thought maybe it had something to do with the DPM that is on the machine. I hate that DPM, as I find it un necessary.

Again thank you for reading my first post, and any suggestions would be great. The warranty ran out last year.
 
   / Kabota 3301 #2  
Idling an emissions DPF system for long periods of time doesn’t do it any good. It needs to be worked at higher RPM’s for the system to perform correctly. It should still be under warranty though.
 
   / Kabota 3301 #3  
If what is coming out of your exhaust is anything but water vapor, I would have a concern. Modern DPF equipped exhaust systems in proper working order don’t drip oil, diesel, soot, etc. I’d have the tech initiate a parked regen and make sure it completes the cycle with no issues.
 
   / Kabota 3301 #4  
Idling an emissions DPF system for long periods of time doesn’t do it any good. It needs to be worked at higher RPM’s for the system to perform correctly. It should still be under warranty though.

Yeah, idling a diesel engine just sets you up for wet stacking which is what this sounds like to me. Very common in diesel generators that are not being used with a high enough load.
 
   / Kabota 3301 #5  
IF you are going to own a Kubota, you have to learn how to spell it's name. lol

SR
 
   / Kabota 3301 #6  
Get a battery tender to charge the battery.
 
   / Kabota 3301 #7  
I had a 3350 and the engine other than dpf was bullet proof. In the cold weather I would start it and once it smoothed out I run it at 1800 to 2000 rpms to warm up. Most of the work I did with that rig was snow related and I would keep it at 2000 plus all of the time. If I got off the the tractor I would just let it run at the work speed or shut it off. Don’t think it ever idled. Once I got it updated, early on, I never had a dpf issue.
Keep it hot and the dpf should be ok.
 
   / Kabota 3301 #8  
There is also no such thing as a DPM. I assume you mean DPF, Diesel Particulate Filter. It filters the black soot particles out of the exhaust then occasionally does a regen where it dumps in extra fuel to burn the filter clean. It takes extra fuel, but also means there shouldn't be any black soot coming out of the pipe. The soot particles are particularly bad for your lungs.

Anything that would make an old diesel belch smoke are bad. Lugging the engine &idling especially. More soot loads up the DPF faster. DPFs clean themselves with heat & diesel engines run on heat. Idling the machine promotes wet stacking, loading up the DPF & other issues. All diesel & gas engines put out a lot of water as combustion byproducts. You rarely notice because its really hot & the water is vaporized. But as startup you'll often see water spewing out of an exhaust pipe. Idling a bit occasionally "to charge the battery" probably lets this water accumulate but never gets the exhaust hit enough to drive all the water out. That let's things rust & other bad things.

Put a battery tender on the machine, or work it hard. Don't just idle it to charge a battery.
 
   / Kabota 3301 #9  
As a fellow Kubota owner that sees fairly low hours, I'm glad I read this thread. Lots of good info here. I don't idle my tractor but it's good to know that I should avoid it within reason.
 
   / Kabota 3301 #10  
No diesel fuel should make it past your DOC/DPF emmissions system, and to your exhaust pipe. It's most likely condensed water mixed with carbon, giving a dark slippery feel which simulates diesel to the touch.

I don't think you have anything to worry about, but like everyone says, it's good advice to avoid long term low rpm operations, including idle. You must keep that exhaust hot to properly burn out diesel particulates, so try if possible to keep at 2000 to 2100 for normal operations, and of course higher when the PTO is required.
 

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