Cummins/Onan 12.5 RDJC / 15.0 RDJC — Break-In
Operation · 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
- One half hour at 1/2 load.
- One half hour at 3/4 load.
- Full load.
- Drain and replace the crankcase oil after the first 50 hours of operation on new generator sets.
Specs & values
- During first few hundred hours, load should be at least 1/2 to full load
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.