Detroit Diesel — Preliminary Inspection
Testing & diagnosis · Diesel Particulate Filter (DPF)
From a Detroit Diesel service manual — check it applies to your exact model before use.
Procedure
- Using a clean white rag or shop cloth, reach inside the device and wipe the inside face of the DPF outlet section.
- Inspect rag for indications of soot.
- If soot is found, the ATD should be replaced; contact the Detroit Diesel Customer Support Center at 313-592-5800.
- If no soot is found, disassemble the ATD and continue the inspection process.
Tools required
- Clean white rag or shop cloth Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Source: Detroit Diesel service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.