Cummins/Onan — Generator Set Maintenance (Battery Disconnected)
Maintenance
From a Cummins/Onan owner's manual — check it applies to your exact model before use.
Applies to: Cummins/Onan DQAD, Cummins/Onan DQAE, Cummins/Onan DQAF, Cummins/Onan QSM11 engine
Before you start
- Accidental starting of the generator set can cause severe personal injury or death. Prevent accidental starting by disconnecting the negative (−) cable from the battery terminal before beginning maintenance procedures.
- Ignition of explosive battery gases can cause severe personal injury or death.
- Disconnect battery charger from AC source before disconnecting battery cables.
Procedure
- Move the Run/Off/Auto switch on the control panel to the OFF position.
- Press the Emergency Stop button and wait at least 30 seconds before completing Step 3.
- Turn off or remove AC power from the battery charger.
- Remove the negative (−) battery cable from the generator set starting battery.
Specs & values
- Wait at least 30 seconds after pressing Emergency Stop before disconnecting battery cables
Full service-parts list: Cummins/Onan DQAD →, Cummins/Onan DQAE →, Cummins/Onan DQAF →
Source: Cummins/Onan owner'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.