Cummins/Onan — Generator Removal
Repair & overhaul
From a Cummins/Onan service manual — check it applies to your exact model before use.
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Procedure
- Disconnect all hydraulic lines and wiring from the generator set and remove the set from the vehicle.
- Remove the enclosure assembly and the fan (blower) intake/scroll.
- Disconnect the hydraulic line between the motor and the heat exchanger.
- Disconnect the field leads from the voltage regulator, the generator leads from TB1 and the grounding strap.
- Remove the four nuts that secure the generator mounting feet to the vibration isolation mounts.
- Thread the lifting eye into the top of the generator and lift the generator assembly away.
Tools required
- lifting eye Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
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.