Cummins/Onan 80MDKAL11454B — Filling the Cooling System
Maintenance
For the Cummins/Onan 80MDKAL11454B, from the Cummins/Onan operator's manual.
Applies to: Cummins/Onan MDKAL, Kubota D1005 engine
Before you start
- Attempting to fill the coolant system too quickly can cause incomplete filling of the engine block, leading to engine damage during warm-up.
- Contact with hot coolant can result in serious burns; do not bleed hot, pressurized coolant from a closed cooling system.
Procedure
- Verify that all drain cocks are closed and all hose clamps are secure.
- Remove the cooling system pressure cap and slowly fill with the 50/50 coolant mixture until coolant reaches the bottom of the fill tube.
- Fill the recovery tank with coolant mixture to the COLD mark.
- Operate the genset until normal operating temperature is attained (about 15 minutes).
- Shut down the genset and let cool.
- Add coolant to the recovery tank until level stabilizes at the COLD mark; this may require several operation cycles.
Specs & values
- Cooling system capacity 4 qt (3.78 L)
- About 15 minutes operation to reach normal operating temperature
Full service-parts list: Cummins/Onan MDKAL →, Kubota D1005 engine →
Source: Cummins/Onan operator'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.