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Diesel Particulate Filter (DPF) – Maintenance

In order to eliminate harmful diesel exhaust gas pollutants and smoke, as much exhaust heat energy as possible as required for proper filter operation. Engine idling and low speed / low load engine operation should be minimized and avoided at all costs. Failure to operate the engines at high load / high speed will result in the filter plugging which could damage the engine and/or the filter.

After 500 hours of filter operation we recommend that the filter be removed from the filter cradle. The filter should be installed so that the flow direction is reversed. By direction the exhaust gas flow in the reverse direction any non-combustible contaminants (such as oil ash) that build up in the filter are released.


DPF Cleaning: Light – Medium Particulate Matter Accumulation

If the filter plugs with particulate matter, remove the clamps and exhaust flex hose from the particulate filter. Remove the particulate filter from the filter cradle. Remove the inlet end cone of the particulate filter and inspect the inlet face of the particulate filter. Wear a high quality dust mask, gloves, eye protection and coveralls during the inspection/cleaning operation. It is best to perform the inspection/cleaning operation in a well-ventilated area.

If the particulate filter inlet face is plugged with particulate matter use a large capacity industrial vacuum cleaner to vacuum the inlet face clean. Take care not to contact and damage the ceramic inlet face of the particulate filter. Install the inlet cone and attach the industrial vacuum cleaner hose to the inlet end cone of the particulate filter. Remove the outlet cone and use compressed air wand (set to 80 PSI nozzle pressure) to clean each individual pore on the outlet face of the particulate filter. The particulate matter released during the cleaning operation should be captured by the vacuum cleaner. Attach the industrial vacuum cleaner hose to the outlet end cone of the particulate filter. Remove the inlet end cone of the particulate filter. Reverse the procedure and clean each individual pore on the inlet face of the particulate filter with compressed air. Repeat the procedure until the filter is completely clean. Take care not to damage the ceramic outlet face of the particulate filter.


DPF Cleaning: Heavy Particulate Matter Accumulation

If the particulate filter inlet face is “very heavily” plugged with particulate matter then we recommend that the filter be taken to a metal heat treating company for thermal cleaning. Alternately the filter can be placed into a ceramics kiln for thermal cleaning. The filter should be heated to a temperature of 1000 F for a period of 5 to 6 hours in an air atmosphere.

Return the filter after thermal cleaning and then use a large capacity industrial vacuum cleaner to vacuum the inlet face clean. Install the inlet cone and attach the industrial vacuum cleaner hose to inlet end cone of the particulate filter. Remove the outlet cone and use a compressed air wand (set to 80 PSI nozzle pressure) to clean each individual port on the outlet face of the particulate filter. The particulate matter released during the cleaning operation should be captured by the vacuum cleaner. Attach the industrial vacuum cleaner hose to the outlet end cone of the particulate filter. Reverse the procedure and clean each individual pore on the inlet face of the particulate filter with compressed air. Repeat the procedure until the filter is completely clean. Take care not to damage the ceramic outlet face of the particulate filter.

If you have any additional requirements, comments or questions please call the sales office at: 1-(800)551-5525.

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Address:30 Intermodal Drive,
Units 19-22, Brampton,
Ontario, Canada L6T 5K1