Detroit Diesel — Removal of Doser Block Assembly
Repair & overhaul
From a Detroit Diesel service manual — check it applies to your exact model before use.
Procedure
- Place drip pan below engine to collect fuel.
- Disconnect fuel return line from fuel pressure regulator.
- Disconnect fuel line leading from junction block to the cylinder head.
- Disconnect the dosing fuel line from the Doser Block Assembly.
- Unplug connectors (noting positions) to FCV, FLP Sensor, FCP Sensor, and EDV.
- Loosen three bolts and remove the Doser Block Assembly.
Tools required
- Drip pan 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.