SEBU8605-01 87
Maintenance Section
Cooling System Coolant Level - Check
3. Fill the coolin
g system with clean water. Install the
cooling system filler cap.
4. Start and run t
he engine at low idle until the
temperature reaches 49 to 66 °C (120 to 150 °F).
5. Stop the engi
ne and allow the engine to cool.
Loosen the cooling system filler cap slowly in
order to relieve any pressure. Remove the cooling
system fille
r 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 d
rain cock or install the drain plug on the
engine. Close the drain cock or install the drain
plug on the radiator.
NOTICE
Do not fill the cooling system faster than 5 L
(1.3 US gal) per minute, in order to avoid air locks.
Cooling system air locks may result in engine damage.
2. Fill th
e cooling system with Extended Life
Coolant (ELC). Refer to the Operation and
Maintenance Manual, “Fluid Recommendations”
topic (
Maintenance Section) for more information
on cooling system specifications. Do not install the
cooling system filler cap.
3. 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. Operate
the engine will allow any air in the system to be
purged. Decrease the engine speed to low idle.
Stop
the engine.
4. Maintain the coolant level at the maximum mark
that
is correct for your application.
g00103639
Illustration 51
Filler cap
5. Clean the cooli
ng system filler cap and inspect the
gasket. If the gasket is damaged, discard the old
filler cap and install a new filler cap. If the gasket
is not damaged
, use a suitable pressurizing pump
in order to test the pressure of 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, install a new fi ller cap.
6. Start the en
gine. Inspect the cooling system for
leaks and for correct operating temperature.
i03576064
Cooling S y s tem Coolan t Level
- Check
Engines With a Coolant Recovery
Tank
Note: The cooling system may not have been
provided by Perkins. The procedure that follows
is for typical cooling systems. Refer to the OEM
information for the correct procedures.
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 performed
with the engine on level ground. This will allow you to
accurately check the coolant level. This will also help
in avoiding the risk of introducing an air lock into the
coolant system.
1. Observe the coolant level in the coolant recovery
tank. Maintain the coolant level to “COLD FULL”
mark on the coolant recovery tank.
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 pres-
sure.
2. Loosen filler cap slowly in order to relieve any
pressure. Remove the filler cap.
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