
56
SEBU8455
Maintenance Section
Re
fi
ll Capacities
NOTICE
Frequently check the speci
fi
c gravity of the coolant for
proper freeze protection or for anti-boil protection.
Clean the cooling system for the following reasons:
•
Contamination of the cooling system
•
Overheating of the engine
•
Foaming of the coolant
NOTICE
Never operate an engine without water temperature
regulators in the cooling system. Water temperature
regulators help to maintain the engine coolant at the
proper operating temperature. Cooling system prob-
lems can develop without water temperature regula-
tors.
Many engine failures are related to the cooling
system. The following problems are related to cooling
system failures: Overheating, leakage of the water
pump, and plugged radiators or heat exchangers.
These failures can be avoided with correct cooling
system maintenance. Cooling system maintenance is
as important as maintenance of the fuel system and
the lubrication system. Quality of the coolant is as
important as the quality of the fuel and the lubricating
oil.
Coolant Recommendations
•
ELC
____________________________
Extended Life Coolant
•
SCA
___________________
Supplement Coolant Additive
•
ASTM
__________________________________________
American
Society for Testing and Materials
The following two coolants are used in Perkins diesel
engines:
Preferred –
Perkins ELC
Acceptable –
A commercial heavy-duty antifreeze
that meets “ASTM D6210 ” speci
fi
cations
NOTICE
The 1600 series industrial engines must be oper-
ated with a 1:1 mixture of water and glycol. This
concentration allows the NOx reduction system to
operate correctly at high ambient temperatures.
NOTICE
Do not use a commercial coolant/antifreeze that on-
ly meets the ASTM D3306 speci
fi
cation. This type of
coolant/antifreeze is made for light automotive appli-
cations.
Perkins recommends a 1:1 mixture of water and
glycol. This mixture of water and glycol will provide
optimum heavy-duty performance as an antifreeze.
This ratio may be increased to 1:2 water to glycol if
extra freezing protection is required.
Table 9
Coolant Service Life
Coolant Type
Service Life
(1)
Perkins ELC
6,000 Service Hours or
Three Years
(2)
Commercial Heavy-Duty
Antifreeze that meets
“ASTM D6210”
3000 Service Hours or
Two Year
(1)
Use the interval that occurs
fi
rst. The cooling system must
also be
fl
ushed out at this time.
(2)
ELC can be extender to 12000 hours by using an approved
extender.
ELC
Perkins provides ELC for use in the following
applications:
•
Heavy-duty spark ignited gas engines
•
Heavy-duty diesel engines
•
Automotive applications
The anti-corrosion package for ELC is different from
the anti-corrosion package for other coolants. ELC
is an ethylene glycol base coolant. However, ELC
contains organic corrosion inhibitors and antifoam
agents with low amounts of nitrite. Perkins ELC
has been formulated with the correct amount of
these additives in order to provide superior corrosion
protection for all metals in engine cooling systems.
ELC is available in a premixed cooling solution with
distilled water. ELC is a 1:1 mixture. The Premixed
ELC provides freeze protection to
−
36 °C (
−
33 °F).
The Premixed ELC is recommended for the initial
fi
ll of the cooling system. The Premixed ELC is also
recommended for topping off the cooling system.
Containers of several sizes are available. Consult
your Perkins distributor for the part numbers.