Suggested rpm痴 and regen

[George2615]

I run mine at 2200 RPM most of the time unless using the PTO. Mine has a different engine but after reading numerous threads on the subject it seems these newer engines like to be run at higher RPM to prevent excess soot buildup.

 

[Alan57]

I am starting to think the same thing.
Thanks

 

[Supraman0614]

I started running mine at lower RPMs as you did, and I've had regens much earlier than the 50 hour mark. I had this conversation with my dealer, who said that the DPF needs heat to stay clean. If you run at lower RPMs, it will soot up much sooner and have to regen more often. The side affect to this is that the DPF will never clear itself entirely during a regen, and you will likely have to replace it sooner than if you consistently run it at higher RPMs. Much different than pre-emissions diesels.

 

[deserteagle71]

Different tractor, bigger engine, but....

I have never run my Kubota over 1900 rpm. No need to. 540 rpm on the PTO (using the E-PTO setting) is just over 1800 rpm for the engine. On the other hand, I don't let it idle much - as soon as the temperature gauge moves off the lowest setting I throttle it up. Over 400 hours on the tractor now. Can't really say how often the regeneration cycle cuts in because I don't keep track. Every once in a while I'll notice the regen light is on in the dash - and then the next time I look it is off. No difference in the way the tractor sounds or operates.

I was really leery of buying a tractor with all this new emissions stuff on it. But Kubota seems to have gotten it right. It's a totally painless process requiring no operator involvement. According to the owner's manual, the only time I should be involved is if when I was done using the tractor and ready to shut it off and the regen light is on, I need to let the tractor run at higher rpm until the regen light goes off and then it is Ok to turn the engine off.

 

[neilkingent]

It ran up to 2100-2200 area, the dash was dusty so I could not see very well.

every time I've had regen issues, it's because the air filter was dirty. The outer filter works very well, but gets clogged.

 

[mred2]

When younger, we blew our air filters out about every two weeks. It is over looked a lot of times. People blow out the radiator after mowing, but forget that the air filter is sucking in the dirt too.