Detroit Diesel — Installation of Fuel Doser Valve
Repair & overhaul · Fuel Doser Valve (FDV)
From a Detroit Diesel service manual — check it applies to your exact model before use.
Procedure
- With a new gasket, the shielding pot, and second new gasket in place, position the FDV and fasten with two Allen screws; torque each Allen screw to 20 Nm (15 lb ft) and then tighten a second time to 4
- Connect in and out coolant lines and torque to 33-35 Nm (24-26 lb ft).
- Connect dosing fuel line to injection nozzle and torque to 16-20 Nm (12-15 lb ft).
Tools required
- Torque wrench Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Allen screws first: 20 Nm (15 lb ft)
- Allen screws second: 40 Nm (30 lb ft)
- Coolant lines: 33-35 Nm (24-26 lb ft)
- Dosing fuel line: 16-20 Amazon eBay FridayParts $14.38 Nm (12-15 Amazon eBay FridayParts $19.30 lb ft)
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.