NOTICE
Dispose of used engine coolant properly or recycle.
Various methods have been proposed to reclaim
used coolant for reuse in engine cooling systems.
The full distillation procedure is the only method ac-
ceptable by Caterpillar to reclaim the used coolant.
For information regarding the disposal and the
recycling of used coolant, consult your Caterpillar
dealer or consult Caterpillar Dealer Service Tool
Group:
Outside Illinois 1-800-542-TOOL
Inside Illinois 1-800-541-TOOL
Canada 1-800-523-TOOL
Flush
1. Flush the cooling system with clean water in order
to remove any debris.
Note: If equipped, be sure to flush the heater and
any related supply and return lines.
2. Close the drain valve (if equipped). Clean the drain
plugs. Install the drain plugs. For the proper
torque, refer to the Specifications Manual,
SENR3130, “Torque Specifications”.
NOTICE
Fill the cooling system no faster than 19 L (5 US gal)
per minute to avoid air locks.
3. Fill the cooling system with clean water. Install the
cooling system filler cap.
4. Start and run the engine at low idle until the
temperature reaches 49 to 66 °C (120 to 150 °F).
5. Stop the engine and allow the engine to cool.
Loosen the cooling system filler cap slowly in
order to relieve any pressure. Remove the cooling
system filler cap. Open the drain valve (if
equipped) or remove the cooling system drain
plugs. Allow the water to drain. Flush the cooling
system with clean water. Close the drain valve (if
equipped). Clean the drain plugs. Install the drain
plugs. For the proper torque, refer to the
Specifications Manual, SENR3130, “Torque
Specifications”.
Fill
NOTICE
Fill the cooling system no faster than 19 L (5 US gal)
per minute to avoid air locks.
1. Fill the cooling system with Extended Life Coolant
(ELC). See Special Publication, SEBU6385,
“Caterpillar On-highway Diesel Truck Engine
Fluids Recommendations” for more information on
cooling system specifications. Do not install the
cooling system filler cap.
2. Start and run the engine at low idle for 5 minutes.
Then, increase the engine rpm to high idle. Run
the engine at high idle for one minute in order to
purge the air from the cavities of the engine block.
3. Check the coolant level. Maintain the coolant level
within 13 mm (0.5 inch) below the bottom of the
pipe for filling. Maintain the coolant level within
13 mm (0.5 inch) to the proper level on the sight
glass (if equipped).
4. Clean the cooling system filler cap. Inspect the
gasket that is on the cooling system filler cap. If
the gasket that is on the cooling system filler cap is
damaged, discard the old cooling system filler cap
and install a new cooling system filler cap. If the
gasket that is on the cooling system filler cap is not
damaged, use a 9S-8140 Pressurizing Pump in
order to pressure test the cooling system filler cap.
The correct pressure for the cooling system filler
cap is stamped on the face of the cooling system
filler cap. If the cooling system filler cap does not
retain the correct pressure, install a new cooling
system filler cap.
5. Start the engine. Inspect the cooling system for
leaks and for proper operating temperature.
i02482066
Cooling System Coolant
Extender (ELC) - Add
SMCS Code: 1352-045; 1395-081
Cat ELC (Extended Life Coolant) does not require
the frequent additions of any supplemental cooling
additives which are associated with the present
conventional coolants. The Cat ELC Extender only
needs to be added once.
NOTICE
Use only Cat Extended Life Coolant (ELC) Extender
with Cat ELC.
Do NOT use conventional supplemental coolant addi-
tive (SCA) with Cat ELC. Mixing Cat ELC with con-
ventional coolants and/or conventional SCA reduces
the Cat ELC service life.
Check the cooling system only when the engine is
stopped and cool.
SEBU7125-13
111
Maintenance Section
Cooling System Coolant Extender (ELC) - Add
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