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Maintenance Section
Cooling System Coolant Additive (DEAC) - Add
Flushing the Extended Life Coolant
From the Cooling System
Some engines utilize Extended Life Coolant. See the
Operation and Maintenance Manual, “Maintenance
Interval Schedule” in order to determine the service
interval. If a Extended Life Coolant was previously
used, flush the cooling system with clean water. No
other cleaning agents are required.
Flushing a Standard Coolant From
the Cooling System
If you change the coolant of a machine to Extended
Life Coolant from another type of coolant, use
a Caterpillar cleaning agent to flush the cooling
system. After you drain the cooling system,
thoroughly flush the cooling system with clean
water. All of the cleaning agent must be removed
from the cooling system.
Note: See the Operation and Maintenance Manual,
“Cooling System Coolant (DEAC) - Change” for the
draining procedure and for the flushing procedure.
i00599502
Cooling System Coolant
Additive (DEAC) - Add
SMCS Code: 1352; 1353; 1395
Pressurized system: Hot coolant can cause seri-
ous burn. To open cap, stop engine, wait until ra-
diator is cool. Then loosen cap slowly to relieve
the pressure.
Note: This procedure pertains to Caterpillar Diesel
Engine Antifreeze/Coolant (DEAC) only. This
procedure does not pertain to machines that are
shipped from the factory with Extended Life Coolant
(ELC) and machines that are maintained with
Extended Life Coolant (ELC).
See Operation and Maintenance Manual, “Cooling
System Specification” for all cooling system
requirements.
Use 8T-5296 Coolant Test Kit in order to check
the concentration.
NOTICE
Excessive additive (greater than the recommended
6% initial fill) together with concentrations of antifreeze
greater than 60% cause deposits to form and can re-
sult in radiator tube blockage and overheating.
Liquid Supplemental Coolant
Additive
g00287385
Illustration 288
g00287410
Illustration 289
1. Pull the hood release lever (1) in order to open
the engine access door (2) on the top of the
machine.
g00287415
Illustration 290
2. Slowly loosen the radiator cap in order to relieve
system pressure. Remove the radiator cap.
3. If necessary, drain enough coolant from the
radiator in order to allow the addition of the liquid
coolant additive.