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66
SEBU8311-02
Maintenance Section
Cooling System Coolant (ELC) - Change
3.
Fill the cooling system with clean water. Install the
cooling system
fi
ller cap.
4.
Start and run the engine at low idle until the
temperature reaches 49 to 66 °C (120 to 150 °F).
5.
Stop the engine and allow the engine to cool.
Loosen the cooling system
fi
ller cap slowly in
order to relieve any pressure. Remove the cooling
system
fi
ller cap. Open the drain cock or remove
the drain plug on the engine. Open the drain cock
or remove the drain plug on the radiator. Allow
the water to drain. Flush the cooling system with
clean water.
Fill
1.
Close the drain cock or install the drain plug on the
engine. Close the drain cock or install the drain
plug on the radiator.
NOTICE
Do not
fi
ll the cooling system faster than 5 L
(1.3 US gal) per minute to avoid air locks.
Cooling system air locks may result in engine damage.
2.
Fill the cooling system with Commercial
Heavy-Duty Coolant. Add Supplemental Coolant
Additive to the coolant. For the correct amount,
refer to the Operation and Maintenance Manual,
“Fluid Recommendations” topic (Maintenance
Section) for more information on cooling system
speci
fi
cations. Do not install the cooling system
fi
ller cap.
3.
Start and run the engine at low idle. Increase the
engine rpm to high idle. Run the engine at high
idle for one minute in order to purge the air from
the cavities of the engine block. Stop the engine.
4.
Check the coolant level. Maintain the coolant level
within 13 mm (0.5 inch) below the bottom of the
pipe for
fi
lling. Maintain the coolant level in the
expansion bottle (if equipped) at the correct level.
5.
Clean the cooling system
fi
ller cap. Inspect the
gasket that is on the cooling system
fi
ller cap. If
the gasket that is on the cooling system
fi
ller cap
is damaged, discard the old cooling system
fi
ller
cap and install a new cooling system
fi
ller cap. If
the gasket that is on the cooling system
fi
ller cap
is not damaged, use a suitable pressurizing pump
in order to pressure test the cooling system
fi
ller
cap. The correct pressure for the cooling system
fi
ller cap is stamped on the face of the cooling
system
fi
ller cap. If the cooling system
fi
ller cap
does not retain the correct pressure, install a new
cooling system
fi
ller cap.
6.
Start the engine. Inspect the cooling system for
leaks and for correct operating temperature.
i02595733
Cooling System Coolant (ELC)
- Change
NOTICE
Care must be taken to ensure that
fl
uids are contained
during performance of inspection, maintenance, test-
ing, adjusting and repair of the product. Be prepared to
collect the
fl
uid with suitable containers before open-
ing any compartment or disassembling any compo-
nent containing
fl
uids.
Dispose of all
fl
uids according to Local regulations and
mandates.
NOTICE
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened
component life.
Clean the cooling system and
fl
ush the cooling
system before the recommended maintenance
interval if the following conditions exist:
•
The engine overheats frequently.
•
Foaming is observed.
•
The oil has entered the cooling system and the
coolant is contaminated.
•
The fuel has entered the cooling system and the
coolant is contaminated.
Note:
When the cooling system is cleaned, only
clean water is needed when the ELC is drained and
replaced.
Note:
Inspect the water pump and the water
temperature regulator after the cooling system has
been drained. This is a good opportunity to replace
the water pump, the water temperature regulator and
the hoses, if necessary.