John Deere 9.0 L Diesel Engines — Prelube Turbocharger
Maintenance
For the John Deere 9.0 L Diesel Engines, from the John Deere service manual.
Applies to: John Deere 6090H engine
Before you start
- DO NOT spin the rotor assembly with compressed air; damage to bearings can occur.
Procedure
- Fill oil return (drain) port with clean engine oil.
- Spin rotating assembly by hand to properly lubricate bearings.
- If turbocharger is to be stored for an extended period of time, lubricate internally and install protective covers on all openings.
Full service-parts list: John Deere 6090H engine →
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.