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. This
operation 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, perform a pressure test. 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 the correct operating temperature.
i06216749
Coolant
(ELC)
-
Change
NOTICE
Perkins ELC must be using with an extender in order
to achieve 12000 hours operation. For more informa-
tion on a suitable extender contact your Perkins
distributor.
Clean the cooling system and flush 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. Replace the water pump, the water
temperature regulator, and the hoses, if necessary.
NOTICE
Service or repair of the engine cooling system must
be performed on level ground. The engine must be
level in order to check the coolant level. The engine
must be level in order to avoid the risk of introducing
an air lock into the coolant system.
Drain
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.
1.
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.
Illustration 58
g03423123
2.
Remove drain plug(1) on the engine. Also remove
the drain plug (2). Open the drain cock or remove
the drain plug on the radiator.
Allow the coolant to drain.
SEBU9063-07
109