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Maintenance Section
Cooling System Coolant (ELC) - Change
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 acceptable 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 Service Technology
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.
2. Close the drain valve (if equipped). Clean the
drain plugs. Install the drain plugs. Refer to
the Specifications Manual for your particular
engine for more specific information on the
proper torques. Refer to the Specifications,
SENR3130, “Torque Specifications” for more
general information on the proper torques.
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 the engine 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. Refer to the Specifications Manual for your
particular engine for more specific information on
the proper torques. Refer to the Specifications,
SENR3130, “Torque Specifications” for more
general information on the proper torques.
Fill
Engines that are Equipped with a Coolant
Recovery Tank
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). Refer to the Operation and Maintenance
Manual, “Cooling System Specifications” topic
(Maintenance Section) for more information on
cooling system specifications. Do not install the
cooling system filler cap.
2. Place the transmission in neutral. Start the engine
and operate the engine at low idle. Increase the
engine rpm to 1500 rpm. Operate the engine at
1500 rpm for one minute in order to purge air
from the cavities of the engine block. Stop the
engine.
3. Pour more ELC into the cooling system until the
cooling system is full.
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.
g00103638
Illustration 19
(1) Recovery tank filler cap
(2) “COLD FULL” mark
(3) “LOW ADD” mark
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