Cummins/Onan — Control Panel Removal

Repair & overhaul

From a Cummins/Onan service manual covering: P4500, P5000E, P5000e. Check it applies to your exact model before use.

Applies to: Cummins/Onan P4500

Procedure

1. Disconnect the battery if equipped.
2. Remove the two bolts on each side of the control panel to disconnect it from the frame.
3. Disconnect the lead connecting the engine ground.
4. Disconnect the fuel cut-off solenoid, the oil alert system, and the Field Winding.
5. To disconnect from the start solenoid, unplug the ground connection, then unscrew the nut holding the positive lead.
6. Remove the two bolts on the end cap to remove the end cap.
7. Disconnect the DC coupler and field winding coupler; unscrew the bolts holding the couplers.
8. Unscrew the nuts holding the main winding leads and disconnect them.

Full service-parts list: Cummins/Onan P4500 →

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.

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