Light-duty DPF cleaning?

Begle1

Begle1

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Nov 18, 2007
Messages
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Has anybody had ash cleaned out of LMM/ 6.4/ 6.7 DPF's?

At what mileage did they require cleaning?


Is "professional" cleaning on a machine mandatory, or can one effectively "field service" a DPF by spraying it out with a hose and air compressor (or some other method)?


Is there even anybody set up at the moment to clean them, or are they being considered by dealers as "non-serviceable"?
 
I can't believe that this isn't a larger issue.

Are dealers really getting away with convincing people that they need a new $2000 DPF every 100,000-150,000 miles?

Or is it so easy to just blow them out with compressed air or water that people are just all doing that and it's a non-issue?

Or are DPF deletes seriously so common that nobody's actually gotten 100,000-150,000 miles on a DPF?

Or do they actually last longer than 100,000-150,000 miles?
 
Besides regen, a stock DPF isnt really a servicable item. Atleast not for light duty trucks.
 
Why aren't the OEM DPF's serviceable? Just because the flanges on the sides don't come off?

I know that there are light-duty DPF's that are serviceable; I took classes on how to disassemble them and put them into the washing machine. After you get the DPF honeycomb out by itself, the next step is to bolt on flanges onto either end of it, then connect the washer's hoses to the flanges. Only difference seems like the Dodge DPF just has those flanges welded onto the honeycomb canister instead of bolted on with a V-band.

There isn't a difference in the DPF honeycomb itself, is there?

I must be missing something, because I can't understand how there isn't a major stink about a non-serviceable $2000 item that goes out every 100,000 miles. That's worse than hybrid batteries. :bang

The DPF's I was trained on can be (and frequently are) cleaned for $150-200.
 
Its news to me, i had only recently heard of commercial truck DPF cleaning.
 
DPF Cleaning Specialists Ltd.

These guys got back to me.

Sorry for the response delay however I wanted to be sure the information
given was accurate.
To answer the question, the DPF for your truck is serviceable. I have
looked at the 2010 assembly at a car lot to verify. The exhaust is located
under the passenger side of the vehicle. There are 2 distinct, larger
chambers in the front of the exhaust stream. The first, smaller chamber is
the DOC or catalytic converter. Our experience is that unless there has been
a turbo failure, stuck open injector or coolant flush, the DOC does not need
cleaning. In other words, if the DOC has not been contaminated with fluid,
it is OK. The next, longer chamber is the DPF. This part of the exhaust
stream is bolted to the outlet side of the DOC and clamped to the exhaust
pipe at the exit side. This portion of the exhaust is removable and can be
cleaned for a small fraction of the price to replace. Our facility can
clean this DPF and have done so very effectively to provide almost new
performance, 95 to 98% of OEM specification. There should be a high
temperature gasket on the flange between the inlet side of the DPF and the
outlet side of the DOC.
Click to expand...

Great. Now I just gotta find somebody closer than Canuckistan. Shipping across the border is horrid.
 
Cummins first said that the service interval was going to be around 12500 to 15000 but we have found out that it really just depend on the application and driver habits. Blowing the dpf out would be ineffective because the passages do not go straight through in the dpf they do in the doc. The only recommened way is to have it pulse cleaned in a cummins approved machine.
 
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