TM 5-3895-383-24
Cooling System Coolant (ELC) - Change
SMCS Code: 1395-044-NL
Personal injury can result from hot coolant, steam and
alkali.
At operating temperature, engine coolant is hot and under
pressure. The radiator and all lines to heaters or the
engine contain hot coolant or steam. Any contact can
cause severe bums.
Remove cooling system pressure cap slowly to relieve
pressure only when engine is stopped and cooling system
pressure cap is cool enough to touch with your bare hand.
Do not attempt to tighten hose connections when the
coolant is hot, the hose can come off causing burns.
Cooling System Coolant Additive contains alkali. Avoid
contact with skin and eyes.
NOTICE
Care must be taken to ensure that fluids are contained
during performance of inspection, maintenance, testing,
adjusting and repair of the product. Be prepared to collect
the fluid with suitable containers before opening any
compartment or disassembling any component containing
fluids.
Refer to Special Publication, NENG2500, "Caterpillar Tools
and Shop Products Guide" for tools and supplies suitable
to collect and contain fluids on Caterpillar products.
Dispose of all fluids according to local regulations and
mandates.
NOTICE
Do not change the coolant until you read and understand
the material in the Cooling System Specifications section.
NOTICE
Mixing Extended Life Coolant (ELC) with other products
reduces the effectiveness of the coolant and shortens
coolant life. Use only Caterpillar products or commercial
products
that
have
passed
the
Caterpillar
EC-1
specifications for premixed or concentrate coolants. Use
only Caterpillar Extender with Caterpillar ELC. Failure to
follow these recommendations could result in the damage
to cooling systems components.
If ELC cooling system contamination occurs, refer to
Operation and Maintenance, "Extended Life Coolant
(ELC)"
under
the
topic
ELC
Cooling
System
Contamination.
Drain the coolant whenever the coolant is dirty. Drain the
coolant when foam is observed.
1.
Stop the engine. Allow the cooling system to cool
completely.
Illustration 146
2.
Open the engine compartment.
Illustration 147
3.
Slowly loosen the cooling system pressure cap in order
to relieve the pressure. Slowly remove the cooling
system pressure cap.
Maintenance Section
Cooling System Coolant (ELC) - Change
1-70
