Can you give me some tips on driver training to reduce DPF issues?
Background: I own a shredding company with 11 mobile paper shredding trucks. They spend hours and hours at idle or running off of PTO. I have frequent problems with my trucks, especially DPF related issues.
So far my Hino trucks are running pretty well. (knock on wood.) I just had some injectors replaced on one (at 30k miles), but it was warranty. I'm worried about these trucks as they get older. (I also have Sterlings, Freightliners, and an International. ALL have DPF issues.)
What should I focus on in training?
Thanks for all your info you provide. You've been a great contributor to this forum.
Bob,
A local tow company brought a rollback in with complaints of having to regen too frequently. Like your trucks that sit running with the PTO on, rollbacks accumulate many hours sitting with the PTO in use, and do many short trips. We had set the truck up with the 'rental flag' set to 1, which allowed them to manually regen at any time. Still, the complaint remained.
I looked in the system protection data, the truck had done more manual regens than automatic. So they're using the feature, but about every hundred miles or so, the truck will want to regen, and since it's stopped all the time, it can't do it automatically. So 2-4 times a day they stop for 10-15 minutes and regen.
I started rooting around in the customization options and set three parameters to 1. Don't remember what they were called, but they had to do with regen with pto on. There are four of these options, but clicking the fourth made the truck regen as soon as it started. With the first three however, I was able to start the truck, turn on the pto, set the rpm wherever I wanted it with the cruise switches, and do a regen. I graphed the regen with the computer to make sure the DPF was running at the right temps, and it was right on the money. Changing the PTO/engine rpm did not affect it much. In other words, it worked great. If you'd like, I can look up these parameters so you can have your local dealer do the same.