SEBU8191-01 51
Maintenance Section
Cooling System Coolant - Change
g01239623
Illustration 44
Typical e xample
5. Open the drain cocks or remove the drain plugs
(5) in the aftercoolers.
6. Allow the coolant to drain.
NOTICE
Dispose of all fluids according to local regulations and
mandates. When you recycle used engine coolant for
reuse in engine cooling systems, the full distillation
procedure is the only method acceptable by Perkins
Engines Company LTD to reclaim the coolant.
Flush
1. Flush the cooling system with clean water in order
to remove any debris.
2. Close the 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 cocks 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.
3. Fill the cooling system with clean water.
If equipped, lo
osen 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 se
curely.
Install the cooling system filler cap (1).
4. Start the engine. Run the engine 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 filler cap (1) slowly in
order to rel
ieve any pressure. Remove the cooling
system filler cap. Open the drain cock or remove
the drain plug (2) in the cylinder block. Open
the drain c
ock 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 t
he drain plugs (5) in the aftercoolers.
Allow the water to drain. Flush the cooling system
with clean water.
Fill
1. Close the 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 cocks 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 water and inhibitor.
Refer to the Operation and Maintenance Manual,
“Flu
id Recommendations” topic (Maintenance
Section) for more information on cooling system
specifications. Do not install the cooling system
fille
r 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. Che
ck that the coolant level is within 25 mm
(1.0 inch) of the bottom of the filler pipe.
g01239656
Illustration 45
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