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John Deere 4045 / 6068 — Check and Adjust High Pressure Fuel Pump Static Timing

Adjustments · High pressure fuel pump timing

For the John Deere 4045 / 6068, from the John Deere service manual.

Applies to: John Deere 4045, John Deere 6068

Procedure

  1. Rotate engine with JDG820 Flywheel Turning Tool until JDE81-4 Timing Pin engages timing hole in flywheel.
  2. Engine should be at No.1 TDC-Compression.
  3. Remove screw for window on injection pump gear; a marked line on the gear should be visible through the window.
  4. If line not visible, engine may be at No.6 TDC-Compression; rotate engine one full revolution.

Tools required

  • JDG820 Flywheel Turning Tool Amazon
  • JDE81-4 Timing Pin Amazon

Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.

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.

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