Perkins 1204EA-E44TA Operation And Maintenance Manual page 72

72
Maintenance Section
Fluid Recommendations
• Drain the cooling system into a suitable container.
Dispose of the coolant according to local
regulations. Flush the system with a 5 to 10
percent solution of Perkins ELC. Fill the system
with the Perkins ELC.
• 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.
Commercial Heavy-Duty Antifreeze and
SCA
NOTICE
Commercial Heavy-Duty Coolant which contains
Amines as part of the corrosion protection system
must not be used.
NOTICE
Never operate an engine without water temperature
regulators in the cooling system. Water temperature
regulators help to maintain the engine coolant at the
correct operating temperature. Cooling system prob-
lems can develop without
regulators.
Check the glycol concentration to ensure adequate
protection against boiling or freezing. Perkins
recommends the use of a refractometer for checking
the glycol concentration. A hydrometer should not be
used.
Perkins engine cooling systems should be tested at
500-hour intervals for the concentration of SCA.
Additions of SCA are based on the results of the test.
An SCA that is liquid may be needed at 500-hour
intervals.
NOTICE
Do not mix types and brands of coolant.
Do not mix brands and types of SCAs.
Do not mix SCAs and Extenders.
Only use SCAs or Extender approved by coolant
manufacturer and compatible with coolant.
Adding the SCA to Heavy-Duty Coolant
at the Initial Fill
Coolants conforming to ASTM D4985 and not
conforming D6210 require the addition of SCA at
initial fill.
Use the equation that is in Table 13 to determine the
amount of SCA that is required when the cooling
system is initially filled.
water temperature
Table 13
Equation For Adding The SCA To The Heavy-Duty Coolant At
The Initial Fill
V × 0.07 = X
V is the total volume of the cooling system.
X is the amount of SCA that is required.
Table 14 is an example for using the equation that is
in Table 13 .
Table 14
Example Of The Equation For Adding The SCA To The Heavy-
Duty Coolant At The Initial Fill
Total Volume of the Multiplication
Cooling System (V) Factor
15 L (4 US gal) × 0.07
Adding The SCA to The Heavy-Duty
Coolant For Maintenance
Heavy-duty antifreeze of all types REQUIRE periodic
additions of an SCA.
Test the antifreeze periodically for the concentration
of SCA. For the interval, refer to the Operation and
Maintenance Manual, "Maintenance Interval
Schedule" (Maintenance Section). Cooling System
Supplemental Coolant Additive (SCA) Test/Add.
Additions of SCA are based on the results of the test.
The size of the cooling system determines the
amount of SCA that is needed.
Use the equation that is in Table 15 to determine the
amount of SCA that is required, if necessary:
Table 15
Equation For Adding The SCA To The Heavy-Duty Coolant
For Maintenance
V × 0.023 = X
V is the total volume of the cooling system.
X is the amount of SCA that is required.
Table 16 is an example for using the equation that is
in Table 15 .
Table 16
Example Of The Equation For Adding The SCA To The Heavy-
Duty Coolant For Maintenance
Total Volume of the Multiplication
Cooling System (V) Factor
15 L (4 US gal) × 0.023
M0135751
Amount of SCA
that is Required
(X)
1.05 L (35.5 oz)
Amount of SCA
that is Required
(X)
0.35 L (11.7 oz)