SEBU8337 41
Maintenance Section
Refill Capacities
NOTICE
Do not use a conv
entional coolant to top-off a cooling
system that is filled with Extended Life Coolant (ELC).
Do not use stand
ard supplemental coolant additive
(SCA).
When using Per
kins ELC, do not use standard SCA’s
or SCA filters.
ELC Cooling System Cleaning
Note: If the cooling system is already using ELC,
cleaning agents are not required to be used at
the specified c
oolant change interval. Cleaning
agents are only required if the system has been
contaminated by the addition of some other type of
coolant or by
cooling system damage.
Clean water is the only cleaning agent that is required
when ELC is dr
ained from the cooling system.
After the cooling system is drained and after the
cooling sys
tem is refilled, operate the engine while
the cooling system fi ller cap is removed. Operate
the engine until the coolant level reaches the normal
operating t
emperature and until the coolant level
stabilizes. As needed, add the coolant mixture in
order to fill the system to the specified level.
Changing to Perkins ELC
To change f
rom heavy-duty antifreeze to the Perkins
ELC, perform the following steps:
NOTICE
Care must b
e taken to ensure that all fluids are
contained during performance of inspection, main-
tenance, testing, adjusting and the repair of the
product. B
e prepared to collect the fluidwithsuitable
containers before opening any compartment or dis-
assembling any component containing fluids.
Dispose of all fluids according to local regulations and
mandates.
1. Drain the
coolant into a suitable container.
2. Dispose of the coolant according to local
regulati
ons.
3. Flush the system with clean water in order to
remove an
ydebris.
4. Use Perkins cleaner to clean the system. Follow
the instr
uction on the label.
5. Drain the cleaner into a suitable container. Flush
the cooli
ng system with clean water.
6. Fill the coolin
gsystemwithcleanwaterand
operate the engine until the engine is warmed to
49° to 66°C (120° to 150°F).
NOTICE
Incorrect or incomplete flushing of the cooling system
can result in damage to copper and other metal com-
ponents.
To avoid damage to the cooling system, make sure to
completely flu
sh the cooling system with clear water.
Continue to flush the system until all the signs of the
cleaning agent are gone.
7. Drain the cooling system into a suitable container
and flushthecoolingsystemwithcleanwater.
Note: The cooling system cleaner must be thoroughly
flushed from the cooling system. Cooling system
cleaner tha
t is left in the system will contaminate the
coolant. The cleaner may also corrode the cooling
system.
8. Repeat Steps 6 and 7 until the system is
completely clean.
9. FillthecoolingsystemwiththePerkinsPremixed
ELC.
ELC Cooling System Contamination
NOTICE
Mixing ELC with other products reduces the effective-
ness of the ELC and shortens the ELC service life.
Use only Perkins Products for premixed or concen-
trate coolants. Failure to follow these recommenda-
tions can result in shortened cooling system compo-
nent life.
ELC cooling systems can withstand contamination to
a maximum of ten percent of conventional heavy-duty
antifreeze or SCA. If the contamination exceeds ten
percent of the total system capacity, perform ONE of
the following procedures:
•
Drain the cooling system into a suitable container.
Dispose of the coolant according to local
regulations. Flush the system with clean water. Fill
the system with the Perkins ELC.
•
Drain a portion of the cooling system into a suitable
container according to local regulations. Then, fill
the cooling system with premixed ELC. This should
lower the contamination to less than 10 percent.
•
Maintain the system as a conventional Heavy-Duty
Coolant. Treat the system with an SCA. Change
the coolant at the interval that is recommended for
the conventional Heavy-Duty Coolant.
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