just wondering what u guys do as far as removing the dpf to get cleanned out do u have them cleaned at a milage interval a time interval or do u wait til there is a problem??????
We've decided to send them for cleaning at 75,000 miles. With our fleet and operation, we are seeing them needing done at 100-120K, so we are going to try to get them before a problem arises.
I don't know that this will be a one-size-fits-all interval sort of thing. I could see a city school needing to do it before a rural school would, but alot depends on the driver and the level of use/abuse.
We clean them as needed, of course YMMV. It's worked out good for us with all the city driving we do. Some will go a few years before needing any cleaning.
If you can stay on top of doing forced parked regens that will help out big time. Also any buses new enough that have SCR. Do a SCR performance test it takes longer and burns hotter. I also look at what my soot load reads after regen or performance test if its not down below one I do it again. Preventive maintenance goes a long way or as I refer to it as TLC. I suspect schools having issues on a regular basis is due to neglect. Also stay on top of your ECM updates if you can.
My buses get forced regen/scr performance test 2-3 times a year needing it or not needing it.
We have buses with over 250,000 miles on them and have never removed a dpf to clean it but they all but one run a lot of daily miles. The one bus that is in town and never see's over 30 mph does get a manual regen every two weeks
dpf maintanence
Posted - 04/26/2018 : 06:07:24 AM
