Cummins/Onan — Prime Turbocharger
Maintenance
From a Cummins/Onan owner's manual covering: 4A2.3, 4A2.3-GS/GC, 6A3.4-GS/GC-1, 6A3.4-GS/GC-2, 6AT3.4-GS/GC, ES-1788. Check it applies to your exact model before use.
Applies to: Cummins/Onan ES-1788, Cummins/Onan 4A2.3 engine
Procedure
- Remove oil inlet line from turbocharger housing.
- Fill bearing housing with clean engine lubricating oil.
- Replace oil inlet line and secure.
Full service-parts list: Cummins/Onan ES-1788 →
Source: Cummins/Onan owner's 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.