Cummins/Onan — Disassemble the injection nozzle
Repair & overhaul
From a Cummins/Onan service manual covering: 205D3A, 3DJA, 3DJA-1E2236, 3DJA-3E2236. Check it applies to your exact model before use.
Applies to: Cummins/Onan DJA engine
Before you start
- Separate and label all nozzle components; never interchange components between nozzles.
Procedure
- Remove nozzle assembly from engine and remove fuel inlet and return lines.
- Clamp nozzle holder body in a vise.
- Remove nozzle cap nut and nozzle.
- Install nozzle cap nut loosely to protect lapped surface.
Tools required
- Vise Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Source: Cummins/Onan 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.