Cummins/Onan 12.5 RDJC / 15.0 RDJC — Out-of-Service Protection
Maintenance · Generator set
For the Cummins/Onan 12.5 RDJC / 15.0 RDJC, from the Cummins/Onan operator's manual.
Applies to: Cummins/Onan 12.5 RDJC, Cummins/Onan 15.0 RDJC, Cummins/Onan RDJC
Procedure
- Exercise the generator set until the engine is up to operating temperature.
- Shut down the engine; disconnect battery and store in a cool, dry place. Connect battery to a charger every 30 days.
- Drain the oil base while it is still warm; refill and attach a warning tag indicating the viscosity of oil used.
- Service the air cleaner.
- Clean throttle and governor linkage and protect by wrapping with a clean cloth.
- Plug the intake and exhaust outlets to prevent entrance of moisture, bugs, dirt, etc.
- Clean and wipe the entire unit; coat parts susceptible to rust with a light coat of grease or oil.
- Provide a suitable cover for the entire unit after the unit has cooled down.
Specs & values
- The inherent lubricating qualities of No. 2 diesel fuel normally protect cylinders for at least 30 days out of service
Full service-parts list: Cummins/Onan RDJC →
Source: Cummins/Onan operator'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.