The Process

During the Durathon Service Process, the vehicle is subject to data downloads, engine health check-up and substrate cleaning. Pressure air pulse and heat are used in the substrate cleaning process to remove any diesel soot and ash to reopen the small air passages.

If a filter is heavily plugged with soot, it may need to be thermally regenerated, for which a Level 2 Thermal Regenerator cleaning (or baking oven) will be used. For extremely plugged filters, the Level 3 Core Rescue method will be used. This method consists of baking and labor-intensive individual cell cleaning to recover the filter.

• Before removing the filter, the FleetCrew technician will perform a DPF system data download and looks for temperature, back pressure and faults.
• In addition an engine ECU download is performed to check for any engine faults.

• The filter is now removed by the FleetCrew technician.
• A visual inspection is performed for signs of damage.
• Cell depth is manually inspected to measure any potential plugging or damage.

• At this point, with the filter removed the technician will perform an engine health check-up which includes:
  • Opacity Test
  • CAC Hose Inspection
  • Oil and Fuel Test

• Filter is weighed to capture initial weight in grams.
• DPF pressure level in inches of H₂O is tested and recorded to determine whether the DPF will require pulse cleaning only, Level 2 regeneration, or Level 3 Core Rescue.

• Level 1 Pulse Cleaning uses high-volume, low-pressure pulses of air to dislodge unburned soot/ash from unit.

• When a DPF substrate requires baking due to heavy plugging, it will first go through the Level 1 Pulse Cleaning process.
• After the unit has been pulse cleaned, the Level 2 Thermal Regeneration process will follow. This method consists of air-pulse heating (or baking) to burn off the soot trapped in the unit.
• For extremely plugged filters, the Level 3 Core Rescue method will be used in addition to pulse cleaning and baking. The Core Rescue method consists of labor-intensive individual cell cleaning to recover the filter.

• Final weigh-in is captured in grams, and DPF pressure level in inches of H₂O is checked once again to ensure the level is down to zero.
• To ensure the filter is renewed to OEM specifications, the DPF is finally put through a high pulse Air Blower (dust collector system), which blows out any minimal amount of left over residue, leaving the filter clean and ready to use again.
• Lastly, FleetCrew conducts an overall system inspection and operation verification.

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Stop stressing over CARB'S complex compliance regulations

Reduce inspection costs, streamline processes and mitigate risks

Painlessly obtain Truck Certificates and renew DMV registrations

Avoid costly compliance violations & fines