John Deere — Replace Final Fuel Filter and Primary Fuel Filter/Water Separator
Maintenance · Fuel filters
From a John Deere service manual covering: 4045, 4045TF120, 6068, 6068TF120, 6068TF250, T06068TF220, T06068TF250, T06068TFM50. Check it applies to your exact model before use.
Applies to: John Deere 4045, John Deere 4045TF120, John Deere 6068, John Deere 6068TF120, John Deere 6068TF250, John Deere POWERTECH 4.5 L & 6.8 L Diesel Engines (4045 / 6068) engine
Before you start
- Contaminated fuel can cause premature failure of fuel injection pump.
Procedure
- Thoroughly clean fuel filter/water separator assembly and surrounding area.
- Connect a drain line to filter drain adapters and drain all fuel from filters.
- Grasp retaining ring, rotate counterclockwise 1/4 turn (viewed from top), remove ring with filter element.
- Inspect filter mounting base for cleanliness; clean as required.
- Remove sediment bowl, if equipped; drain and clean; dry with compressed air.
- Install sediment bowl onto new filter element; tighten securely.
- Inspect filter base seal ring; replace as needed.
- Install new filter element onto mounting base, indexing properly with a slight rocking motion.
- Install retaining ring and tighten about 1/3 turn until ring snaps into the detent. Do not overtighten.
- Bleed the fuel system.
Full service-parts list: John Deere 4045 →, John Deere 6068 →, John Deere 6068TF250 →
Source: John Deere 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.