Cummins/Onan — Main Rotor - Replace
Repair & overhaul · Generator Main Rotor
From a Cummins/Onan service manual — check it applies to your exact model before use.
Applies to: Cummins/Onan MDKBH
Procedure
- Disconnect and connect battery cables, engine wiring harness, fuel lines, exhaust hose, coolant hoses
- Drain and refill engine fluids
- Remove and install soundshield, starter, generator drive belt, engine coupling assembly and drive belt, flywheel
- Remove and install generator pulley, generator air inlet duct, brush block assembly, cooling fan
- Remove and install end bell/bearing carrier, main stator, main rotor assembly
- Check brush alignment
- Test run unit
Specs & values
- SRT 25-1AA: 4.0 hours; in-chassis accessibility B
Full service-parts list: Cummins/Onan MDKBH →
Source: Cummins/Onan 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.