wc_tx002068gb.fm
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Genset Maintenance Onan Genset
Continued from the previous page.
5. Remove bottom access cover.
6. Position the collection container under the drain cock (b).
7. Open the drain cock and drain the coolant. Approximately 1.5 L (1.5 qts.) will
drain.
Cleaning
Clean and flush the cooling system with radiator cleaning chemicals. Follow the
instructions for cleaning and flushing that are included with the cleaning chemicals.
Filling
Perform the procedure below to fill the coolant system.
1. Close the radiator drain cock.
2. Fill the cooling system with coolant through the fill opening using a funnel.
Note: Using a funnel will prevent coolant from entering the vent hose (y). If coolant
enters the vent hose, it may block escaping air as the system fills. If the vent hose
is blocked, the system will seem full when in fact it is not. If the vent hose does
become blocked:
a.Pinch closed the overflow hose (z).
b.Blow the vent hose clear.
3. Reconnect the battery.
4. Start the genset and operate the genset for a few minutes, then shut it down.
5. Add more coolant if necessary.
6. Reinstall the pressure cap.
7. Reinstall the access cover.
8. Fill the recovery tank with coolant to the “COLD” mark.
Result
The engine coolant has now been changed.
wc_gr008039
b
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