Cummins/Onan — Generator Stator Disassembly

A Cummins/Onan service procedure — check it applies to your exact model before use.

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Procedure

1. To pull the fan off the shaft taper, secure a three-point wheel puller to the three holes in the fan hub with M6 or 1/4 inch self-tapping screws.
2. Remove the end bell support bracket from the engine bracket and the end bell (4 bolts).
3. Scribe a line across the adapter, stator laminations and end bell to make realignment easier during reassembly.
4. Block the stator so that it does not fall against the rotor, and then remove the four generator through bolts.
5. Pull the generator end bell straight out.
6. Examine the bearing bore and replace the end bell if it is scored or otherwise damaged by the bearing.
7. Pull the stator assembly straight out, taking care not to damage rotor or stator windings.
8. Block the rotor to support its hanging weight to prevent damage to the adapter and bearing.

Source: manual:981-0535 Onan HDKBA HDKBB Mobile Genset Service manual (10-2002).pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.