I don't have one but ran accross this and thought some of you guys might be interested to read it.




The particulate filter must be removed from the vehicle and allowed to cool down ( overnight is best but use your best judgement as to not have too much of a temperature differential when you wash it out). We place a pig mat underneath the filter so as not to wash the soot down the drain and steam clean/pressure wash the inside of the particulate filter starting from the rear (non flange side) and simply wash the filter element out making sure to pressure wash the entire exposed surface pushing water through to filtering element. Then turn the assembly over and wash from the flange side. We do not use any cleaners or solvents ONLY hot water under pressure. Solvents or cleaners may create a problem due to the extremely high temperatures during regeneration. Once you have pressure washed from both sides starting from the non flange side, blow it out with air to remove excess water and re-install. This has effectively taken filters at 100% immediately down to 30% or less and will allow the vehicle to be driven to finish the cleaning via the trucks normal regeneration cycle. While there is no technical bulletin that has directed us to do this, we have done this successfully many times. It became a necessity for us to take care of our customers in a timely fashion, as I’m sure you already know, the availability of replacement filters is very limited not to mention the cost. Hope this will help, Thanks for all your technical info. Call me if you have any further questions and I will do the same.”



Larry H. Miller Chrysler Jeep Dodge

 

Interesting, sounds simple enough.

 

Um...if it's that easy to remove, what if you just "forget" to put it back in?

 

LOL thought crossed my mind also.

 

What about the Cat, isnt that getting full also?? I went in with 100% full on the overhead and they replaced the cat and DPF along with the new flash?

That is a decent fix. If it really worked and it would last 5000 miles or so, it would be completely worth it to go buy a cheaper pressure washer.

Or as we are all thinking like above posts to just "forget" to put it back on

 

I'm wondering what inspection is going to be like when it's time? Are they going to hook the probe up to the exhaust and measure like they do gas engines? This is the concern when hacking up the exhaust-

BigD

 

I think it depends on the state and maybe in the county, too. I the states I am in, one does not inspection at all. The other will check how much smoke the truck puts out on a dyno, and maybe plug an odb scanner to see if there are any codes thrown.

But not to hijack the thread...

Sounds like a pretty simple way to keep the truck running if for whatever reason regen doesnt kick in.

 

I have a PDF file from cummins about the regeneration modes and DPF maintenance, dunno how to attach the file tho. I could do copy & paste but it's like 46 pages long and very informative. I guess I could email it to ppl interested. just send me a pm with your email if you want a copy of it.

 

Wow, the info in that pdf file from Cummins is pretty interesting. Some of the interesting points (for me anyways) are:

Under normal conditions, the entire emissions system including the DPF should last for the lifetime of the engine. Lifetime of the engine is defined as 200,000 to 400,000 miles under line haul conditions or until first re-build.

With proper use and maintenance the DPF should not have to be cleaned (off of the truck) until approx 200,000 miles or more. Proper maintenance is described as always using CJ-4 oil and NOT adding ANY motor oil or fuel additives. Apparently using non CJ-4 oil and additives results in components that don't burn creating ash, which builds up in the DPF. The DPF rids itself of soot via either passive, active or manual regeneration, but that does not remove the ash. Once that builds up high enough you have to remove the DPF to clean it.

 

I placed a copy of the PDF file on the web so people can download it, hopefully saving you an inbox full of PMs looking for the file.

6.7L Regeneration Info


OK, I just read through all those slide. Where it talked about regeneration, it mentioned using a dosing injector to put fuel in the system prior to the DOC. Is the 6.7L using that injector? I didn't think it was. It also referring to the DOC and DPF being in one package, which the 6.7L has two pieces, correct?

 

Isn't the DPF welded to the exhaust system? I don't think that sounds too simple. Then you have to re-weld it back.

I don't think people want to do that every 5000 miles.

 

thanks man

 

no, it's bolted on. looks easy enough to get off.

 

The cummins pdf refers to 2007 emission systems - e.g. the CC 6.7 engine - a normal cummins product. The 2010 emission system in the 6.7 pickups is different. My guess would be that their projected lifetime would be 120,000 miles - light heavy duty. Remember: DC certified the chassis not the engine on the 6.7 pickups. Cummins certified the engine not the chassis on the CC 6.7 (medium heavy duty).

 

That PDF is for class 8 cummins engines, so keep that in mind.