Cummins/Onan — Generator Set Storage (Out-of-Service Protection)
Maintenance
From a Cummins/Onan owner's manual — check it applies to your exact model before use.
Applies to: Cummins/Onan HDKA, Cummins/Onan HDKAQ, Cummins/Onan HDKAR
Before you start
- Battery electrolyte can cause severe eye damage and burns to the skin.
Procedure
- Exercise the genset until the engine is at operating temperature.
- Shut down and disconnect the battery cables (negative first); store the battery in a cool, dry place and trickle-charge every 30 days.
- Drain the crankcase oil while still warm; replace the oil filter; refill and attach a tag indicating oil viscosity.
- Check the coolant level and add more if low; test the coolant mixture if freezing temperatures are possible.
- Plug exhaust outlets to prevent entrance of moisture, bugs and dirt.
- Clean and wipe the entire genset; lightly coat parts that may rust with grease or oil.
Specs & values
- No. 2 diesel fuel protects cylinders at least 30 days; for storage longer than 30 days follow this procedure
Full service-parts list: Cummins/Onan HDKA →, Cummins/Onan HDKAQ →, Cummins/Onan HDKAR →
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.