Regen question

[justaguyinga]

This question is on a Cabela's LM55H which, when I bought it in 2016, was equivalent to the T554hst. I was mowing yesterday and after about an hour, the engine automatically slowed from PTO RPM of 2400 down to 2000 rpm and the regen and engine lights came on.

I drove back to the barn, let the tractor run at 2000 rpms for well over 30 minutes but the lights still remain on. When I lower rpms below 2000, regen button flashes. When I increase rpms to 2000, regen button stays solid red. I can not raise rpms above 2000 even if I put the throttle lever all the way down. I tried regen process of stopping, idling, parking brake, put in neutral, press regen button for 3 seconds but nothing happens. Warning lights still on and regen button flashes. Regen light only stops flashing ad goes solid when I manually increase rpms to 2000.

Did I just not let the regen process run long enough? In total it ran for well over 30 minutes at 2000 rpm.

 

[jeff9366]

Did I just not let the regen process run long enough? In total it ran for well over 30 minutes at 2000 rpm.

My Kubota must run at 2,400 rpm initially to get the DPF hot enough to initiate regeneration. Once sufficiently hot, a separate "REGENERATING" signal appears and flashes. Once regeneration starts 2,200 rpm keeps the DPF sufficiently hot. Parked regenerations are pretty consistent around 16 minutes.

That upward oriented arrow (inside the DPF symbol) on your dash, on my Kubota indicates to increase hand throttle engine rpms to elevate DPF temperature.

Do you have an Operator's Manual?


I was mowing yesterday and after about an hour, the engine automatically slowed from PTO RPM of 2400 down to 2000 rpm and the regen and engine lights came on.

On my Kubota this indicates the tractor is overdue for regeneration.

 

[justaguyinga]

Did I just not let the regen process run long enough? In total it ran for well over 30 minutes at 2000 rpm.

My Kubota must run at 2,400 rpm initially to get the DPF hot enough to initiate regeneration. Once sufficiently hot, a separate "REGENERATING" signal appears and flashes. Once regeneration starts 2,200 rpm keeps the DPF sufficiently hot. Parked regenerations are pretty consistent around 16 minutes.

That upward oriented arrow (inside the DPF symbol) on your dash, on my Kubota indicates to increase hand throttle engine rpms to elevate DPF temperature.

Do you have an Operator's Manual?


I was mowing yesterday and after about an hour, the engine automatically slowed from PTO RPM of 2400 down to 2000 rpm and the regen and engine lights came on.

On my Kubota this indicates the tractor is overdue for regeneration.

Yes I have operator's manual. The regen process recommended is what I tried that did not work. And that particular symbol with the + sign and upward arrow is not in the manual anywhere unfortunately.

As I mentioned, I can crank the throttle as high as it can go and the engine will not go higher than 2000 rpms. I was running at 2400 when the tractor automatically took itself down to 2000 rpms.