John Deere 4045 / 6068 — Install Electronic Injector (EI)
Repair & overhaul
For the John Deere 4045 / 6068, from the John Deere service manual.
Applies to: John Deere 4045, John Deere 6068
Before you start
- Do NOT use red or blue LOCTITE on solenoid studs.
- Perform the following steps in a clean environment.
Procedure
- Replace O-ring (A) and combustion sealing washer (B).
- Lubricate O-ring with petroleum grease.
- Carefully insert injector into bore until it 'pops' into place.
- Using the clamp (C), turn injector clockwise until in line with the fuel leak-off line banjo bore (D).
- Dip hold down clamp screw with spherical washer (E) in engine oil. Install screw then hand tighten.
- Install banjo fitting bolt with new dual banjo sealing washers (F). Hand tighten.
- Install high pressure fuel line (G). Hand tighten fitting nut.
- Tighten injector clamp (E) to specification plus torque turn.
- Tighten fuel leak-off banjo screw (H) to specification.
- Tighten high pressure fuel line (G) to specification at both ends.
- Install wiring harness (I) onto injector studs.
- Apply LOCTITE 222 Small Thread Locker to injector nuts (J). Install and tighten to specification.
- Install a new dust cap (K) on injector connector.
- Install heat shield (L). Tighten cap screw (M) to specification.
- Calibrate the ECU for proper electronic injector fueling.
Tools required
- Service ADVISOR Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Clamp screw 15 N·m (11 lb-ft) plus 90 degree torque turn
- Fuel leak-off banjo screw 25 N·m (18 lb-ft)
- High pressure fuel line 30 N·m (22 lb-ft)
- Injector nut 2 N·m (1.5 lb-ft)
- Heat shield cap screw 10 N·m (7 lb-ft)
Full service-parts list: John Deere 4045 →, John Deere 6068 →
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.