John Deere 4045 / 6068 — Check Fuel Supply Pressure
Testing & diagnosis · Fuel transfer pump pressure
For the John Deere 4045 / 6068, from the John Deere service manual.
Applies to: John Deere 4045, John Deere 6068
Procedure
- Clean any debris from around the final fuel filter outlet fitting.
- Connect pressure gauge from Universal Pressure Kit JT05412 to the final fuel filter outlet plug.
- Start engine and run at low idle; fuel transfer pump should maintain minimum output pressure.
Tools required
- Universal Pressure Kit JT05412 Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Fuel Transfer Pump Pressure - Cranking 30 kPa (0.3 bar) (4.4 psi)
- Fuel Transfer Pump Pressure - Low Idle 40 kPa (0.4 bar) (5.8 psi)
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.