Cummins/Onan M1894s / M1895s — Prestart Checks
Operation · generator set
For the Cummins/Onan M1894s / M1895s, from the Cummins/Onan owner's 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
- Failure to provide an approved fuel/water separator and filter upstream of the engine-mounted fuel lift pump can lead to pump and injection unit failures.
- Let the engine cool down before removing the coolant pressure cap; turn the cap slowly.
- The sea water pump has a neoprene impeller that can disintegrate in seconds if pump prime has been lost.
Procedure
- Check that an approved fuel/water separator is installed upstream of the engine-mounted fuel lift pump.
- Check the fuel supply and prime the engine fuel system if necessary.
- Check engine oil and coolant levels before starting the set.
- Make sure the sea water cock is open on a heat exchanger-cooled set; prime the sea water pump if prime is lost.
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 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.