Cleaning a DPF filter
- Thread starter gribble21
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Chevycummins
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Take it in and let them clean it professionally. you can try to just blow it out with an air compressor, but the pressure is too low and contains moisture. Unless you can force regen it after you blow it out they will clog up again. Will work in a pinch to get you running a short distance.
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plowboy1138
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at kenworth we just blew them out with shop air and did a regen...im not sure if there is a way to force a regen on a pu with out having a way to hook insite up to it
plowboy1138
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you should still get it cleaned correctly to avoid dpf damage. We found that just doing it with the air hose cause the dpf to flake apart and breech. The dpf cleaning machine pulses air back and forth and has more flow vs pressure.
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I've called around to a few places and was told the 07.5 6.7 Cummins DPF's couldn't be cleaned out like the big rig DPF's because they don't come apart like the big rigs do and won't fit in the machines to clean them. Was I told wrong and they actually can clean them out? What does moisture do to the DPF's.
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Scooter's Roofing
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moisture won't hurt them
Chevycummins
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Here is what I found from another site.
"The particulate filter must be removed from the vehicleand 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.”
"The particulate filter must be removed from the vehicleand 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.”
