Northern Lights — Injector Removal (SP-10)
Repair & overhaul · Fuel injectors
From a Northern Lights owner's manual covering: 844DW3, 844LW3, M20CRW3, M844DW3, M844LW3, M844W3. Check it applies to your exact model before use.
Applies to: Northern Lights M20CRW3, Northern Lights M844DW3, Northern Lights M844LW3, Northern Lights M844W3, Northern Lights 844L engine
Before you start
- Do not use pry bars to remove injectors from cylinder head.
- Escaping diesel fuel under pressure can penetrate the skin.
Procedure
- Clean loose dirt from around injectors and fuel lines.
- Relieve high pressure in fuel lines by loosening delivery line flare nuts at each injector.
- Remove delivery lines as an assembly from injectors and injection pump; cover ends.
- Remove return line retaining bolts and remove return line.
- Unscrew and remove the injectors.
- Discard copper sealing washers; cover holes to prevent debris entering cylinders.
Full service-parts list: Northern Lights M20CRW3 →, Northern Lights M844DW3 →, Northern Lights M844LW3 →, Northern Lights M844W3 →
Source: Northern Lights owner's 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.