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