2. Install the connection hose. Clean the drain plugs
and install the drain plugs. Tighten the drain plugs
securely.
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. Install the
cooling system filler 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 filler cap slowly in order
to relieve any pressure. Remove the cooling
system filler cap. Remove the connection hose
and remove the cooling system drain plugs. Allow
the water to drain. Flush the cooling system with
clean water. Install the connection hose.
6. The drain plug O rings on the engine block must be
replaced. Clean the drain plugs and install new O
ring seal. Install the drain plugs and tighten to a
torque of 35 N·m (25 lb ft).
Fill
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.
1. Fill the cooling system with Extended Life Coolant
(ELC). Refer to this Operation and Maintenance
Manual, “Refill Capacities” topic (Maintenance
Section) for more information on cooling system
specifications. Do not install the cooling system
filler cap.
2. Start and run the engine at low idle. Increase the
engine rpm to high idle. Operate the engine in
order to open the engine thermostat. An open
thermostat will allow any air in the system to be
purged. Decrease the engine speed to low idle.
Stop the engine.
3. Maintain the coolant level at the maximum mark
that is correct for your application.
4. Clean the cooling system filler cap. Inspect the
gasket that is on the cooling system filler cap. If the
gasket that is on the cooling system filler cap is
damaged, discard the old cooling system filler cap
and install a new cooling system filler cap. If the
gasket that is on the cooling system filler cap is not
damaged, pressure test the cooling system filler
cap. The correct pressure for the cooling system
filler cap is stamped on the face of the cooling
system filler cap. If the cooling system filler cap
does not retain the correct pressure, install a new
cooling system filler cap.
5. Start the engine. Inspect the cooling system for
leaks and for proper operating temperature.
i05197396
Coolant Extender (ELC) - Add
In order for Perkins ELC to achieve 12000 hours an
extender must be added at 6000 hours. For a suitable
extender, contact your Perkins dealer or Perkins
distributor.
i05436397
Coolant Level - Check
Pressurized System: Hot coolant can cause seri-
ous burns. To open the cooling system filler cap,
stop the engine and wait until the cooling system
components are cool. Loosen the cooling system
pressure cap slowly in order to relieve the
pressure.
Check the coolant level when the engine is stopped
and cool.
NOTICE
When any servicing or repair of the engine cooling
system is performed, the procedure must be per-
formed with the engine on level ground. This proce-
dure will allow you to check accurately the coolant
level. This procedure will also help in avoiding the risk
of introducing an air lock into the coolant system.
1. Remove the cooling system filler cap slowly in
order to relieve pressure.
SEBU8732 99
Maintenance Recommendations
Coolant Extender (ELC) - Add
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