SEBU8191-01 49
Maintenance Section
Cooling System Coolant - Change
3. Fill the coolin
g system with clean water.
If equipped, loosen the vent screws (4) in the
aftercoolers
. Fill the cooling system until coolant
free of air flows from the vent screws. Tighten the
vent screws securely.
Install the cooling system filler cap (1).
4. Start the en
gine. Run the engine until the
temperature reaches 49 to 66 °C (120 to 150 °F).
5. Stop the eng
ine and allow the engine to cool.
Loosen the cooling system filler cap (1) slowly in
order to relieve any pressure. Remove the cooling
system fill
er cap. Open the drain cock or remove
the drain plug (2) in the cylinder block. Open
the drain cock or remove the drain plug on the
radiator.
Open the drain cocks or remove the drain
plugs (3) in the oil coolers. Open the drain cocks
or remove the drain plugs (5) in the aftercoolers.
Allow the
watertodrain.Flushthecoolingsystem
with clean water.
Fill
1. Close th
e drain cock or install the drain plug (2)
in the cylinder block. Close the drain cock or
install the drain plug on the radiator. Close the
drain co
cks or install the drain plugs (3) in the oil
coolers. Close the drain cocks or install the drain
plugs (5) in the aftercoolers.
NOTICE
Do not fill 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 Extended Life
Coolant (ELC). Refer to the Operation and
Maintenance Manual, “Fluid Recommendations”
topi
c (Maintenance Section) for more information
on cooling system specifications. Do not install
thecoolingsystemfiller cap (1).
3. Start the engine. Run the engine in order to purge
the air from the cavities of the engine block. Stop
the
engine.
4. Check that the coolant level is within 25 mm
(1
.0 inch) of the bottom of the filler pipe.
g01239656
Illustration 40
Typ ical example
5. Clean the cooling system filler cap (1) and inspect
the seal (2). If the seal is damaged, discard the
old filler cap and install a new filler cap. If the seal
is not damaged, use a suitable pressurizing pump
in order to pressure test the filler cap. The correct
pressure is stamped on the face of the filler cap. If
the filler cap does not retain the correct pressure,
replace the filler cap.
Install the cooling system filler cap.
6. Start the engine and run the engine. Inspect the
cooling system for leaks. Ensure that the cooling
system operates at the correct temperature.
i04328029
Cooling System Coolant -
Change
(Inhibitor)
NOTICE
Care must be taken to ensure that fluids are contained
during performance of inspection, maintenance, test-
ing, adjusting and repair of the product. Be prepared to
collect the fluid with suitable containers before open-
ing any compartment or disassembling any compo-
nent containing fluids.
Dispose of all fluids 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 flush the cooling
system before the recommended maintenance
interval if the following conditions exist:
•
The engine overheats frequently.
•
Foaming of the coolant is observed.
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