Between Omaha and Des Moines, 7 miles South of I80 | jd8770 - 7/23/2020 22:14 have had trouble with 2012 jd 9360r regening to often since new, like every 3 hrs. dealer has replaced, at our expense, the ecu, reloaded software twice and now tech loaded new software directly from engineers at deere and we've run tractor 3 days. it's still regening every 3 hrs. we've replaced all the seals in exhaust system, wrapped heat sheild around exhaust componets, to make sure heat is held in as it goes to muffler and particulate filter,
and removed the particulate filter and had it professionaly cleaned, by local kenworth dealer, who has the machine to do the job,
as recommended by our dealer, and now tech is waiting on deere for futher instructions. i know a delete would be the answer but i feel deere should at least fix it right so it only regens about every 50 to 60 hours like we are told it should under heavy tillage work. tech says no codes are thrown so can't fix something that he doesn't know is broken. tractor has a little over 3000 hrs and all the fixes we've tried have been done in last 100hrs. so far we've spent over $5000 on stupid epa bullsh###t.
One item, I thought of last night, was that when a Diesel particulate filter (DPF) gets removed and "professional cleaned" (back-flushed to remove Ash residue=what KW dealer's machine did) then once that DPF filter is reinstalled (at least, on a CAT engine) the mechanic must reset the "Regen Software Logic" in the Engine's ECM.
This "Reset" tells the software logic that is has a "freshly Ash cleaned" DPF and the Regen logic goes back to "Zero hours". CAT's Regen won't get triggered near as often, if the Engine's ECM knows it had an fresh Ash Cleaning done to the DPF.
NOTE: There is a strategy, inside the Regen logic, to progressively shorten the "time" intervals, as the engine hours "build up" over time, regardless of what sensors might say, if it needs a regen or not. Engineers programmed this in, as best they could, to try a compensate for an expected build-up of Ash, inside the DPF, as more and more hours got put on the engine. (Ash build-up decreases the overall surface area, inside a DPF; thus Regens need to happen more often, as hours/time goes by)
Yes, I would assume the JD engineers might have the same Regen Software Logic, and they would have already had the JD mechanic "reset" their Regen logic, BUT you could ask them, if they happen to forget this step (if it applies to John Deere software). Otherwise, the Engine's ECM still "assumes" it has a somewhat dirty DPF (with Ash residue inside) and its programming (Regen logic) is operating for a engine with little over 3000 hours, and that increases the frequency on Regen cycles.
Edited by 4WD 7/24/2020 07:31
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update on 9360r regen problem
