Cummins/Onan M1894s / M1895s — Battery Connections for 24 Volt Systems
Installation · Batteries
For the Cummins/Onan M1894s / M1895s, from the Cummins/Onan service manual.
Applies to: Cummins/Onan M1894s, Cummins/Onan M1895s, Cummins/Onan MCGBA, Cummins/Onan MCGCA, Cummins/Onan MCGDA, Cummins/Onan MCGDB, Cummins/Onan MCGGA
Before you start
- Accidental starting can cause severe personal injury or death. Disconnect the starting battery cables (negative (-) first).
- Do not smoke near batteries.
Procedure
- Connect two 12 volt batteries in series to obtain 24 volts.
- Secure the negative battery cable to the starter or to the engine block.
- Remove paint, rust or grease under the connector so that it touches bare metal.
- As the last step, connect the negative (-) battery cable to the engine.
Full service-parts list: Cummins/Onan M1894s →, Cummins/Onan M1895s →, Cummins/Onan MCGBA →, Cummins/Onan MCGCA →, Cummins/Onan MCGDA →, Cummins/Onan MCGDB →, Cummins/Onan MCGGA →
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.