TM 5-3895-383-24
10.
Repeat Steps 8 and 9 until the system is completely
clean.
11.
Fill the cooling system with the Caterpillar Premixed
ELC.
12.
Operate the engine until the engine is warmed. While
the engine is running, inspect the engine for leaks.
Tighten hose clamps and connections in order to stop
any leaks.
13.
Attach the Special Publication, PEEP5027, "Label" to
the radiator on the machine in order to indicate the use
of Caterpillar ELC.
NOTE:
Clean water is the only flushing agent that is
required when the ELC is drained from the
cooling system.
Contamination of the ELC Cooling System
NOTICE
Mixing ELC with other products that do not meet
Caterpillar EC-1 specifications reduces the effectiveness
of the coolant and shortens coolant service life.
Use only Caterpillar products or commercial products that
have passed the Caterpillar EC-1 specification for pre-
mixed or concentrate coolants. Use only Caterpillar
Extender with Caterpillar ELC.
Failure to follow these recommendations can result in
shortened cooling system component life.
In cooling systems that use Caterpillar ELC, do not add Diesel
Engine Antifreeze/Coolant (DEAC) as a makeup coolant.
Contamination of ELC by DEAC will defeat the advantages of
ELC. If the ELC in the cooling system becomes contaminated
by more than 10 percent of the total system capacity of DEAC
or SCA, perform one of the following operations:
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 Caterpillar 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 Diesel Engine
Antifreeze/Coolant (DEAC). Treat the system with an
SCA. Change the coolant at the interval that is
recommended for the conventional Diesel Engine
Antifreeze/Coolant (DEAC).
Extended Life Coolant (ELC) Cooling System Maintenance
SMCS Code: 1350; 1352; 1395
NOTICE
Use only Caterpillar products or commercial products that
have passed Caterpillar EC-1 specification for pre-mixed
or concentrated coolants.
Use only Caterpillar Extender with Extended Life Coolant.
Mixing Extended Life Coolant with other products reduces
the Extended Life Coolant service life. Failure to follow
the
recommendations
can
reduce
cooling
system
components life unless appropriate corrective action is
performed.
In order to maintain the correct balance between the antifreeze
and the additives, you must maintain the recommended
concentration of Extended Life Coolant (ELC). Lowering the
proportion of antifreeze lowers the proportion of additive. This
will lower the ability of the coolant to protect the system from
pitting, from cavitation, from erosion, and from deposits.
Proper additions to the Extended Life Coolant
NOTE:
Do not add ELC Concentrate as a makeup
solution for maintaining the correct coolant level.
The addition of the concentrated Extended Life
Coolant will increase the concentration of glycol
in the cooling system.
During daily maintenance, use the premixed ELC as a cooling
system top-off. This will bring the coolant up to the proper
level. Use ELC or use a coolant that meets Caterpillar
specifications (EC-1). Check the specific gravity of the coolant
system with the 1U-7298 Coolant/Battery Tester (Degree
Celsius) or with the 1U-7297 Coolant/Battery Tester (Degree
Fahrenheit). Use ELC Concentrate to restore the proper glycol
concentration in the coolant system. This should be done
before the engine is exposed to freezing temperatures.
Maintenance Section
Cooling System Specifications
1-27
