John Deere 4045 / 6068 — Install Electronic Injectors (EIs)
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 twist the top of the EI - it will change the EI calibration.
- Do not get oils in high pressure fuel passage or sealing surfaces.
Procedure
- Place washer in bottom of injector sleeve.
- Replace EI o-rings; lubricate with petroleum jelly or clean oil.
- Slide forked legs of EI hold down clamp around flat part of EI; orient conical bore away from clamp.
- Insert EI and clamp assembly until it pops into place; position mark faces side feed tube.
- Replace and lubricate side feed tube o-rings and retaining nut o-ring.
- Install side feed tube with small end toward the EI.
- Tighten EI hold down clamp tight to seat.
- Torque side feed tube retaining nut to 5 N·m (first torque).
- Torque EI hold down clamp cap screw to 47 N·m.
- Torque side feed tube retaining nut to 35 N·m (second torque).
- Connect HPCR delivery lines and torque to 27 N·m.
- Apply LOCTITE 222 (TY24311) to injector studs; install EI wiring and torque nuts to 2 N·m.
- Install rocker arm cover with vent tube.
- Install heat shield and torque cap screws.
Tools required
- JDG1652 EI Removal Tool Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- First Torque - Side Feed Tube Retaining Nut 5 N·m (3.7 lb-ft)
- EI Hold Down Clamp 47 N·m (34.7 lb-ft)
- Second Torque - Side Feed Tube Retaining Nut 35 N·m (25.8 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.