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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 burns. 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. |
Use Caterpillar Extended Life Coolant (ELC) when you add coolant to the cooling system. See Special Publication, SEBU6250, "Caterpillar Machine Fluids Recommendations" for all cooling system requirements. When a Caterpillar Extended Life Coolant (ELC) is used, an extender must be added to the cooling system.
Use a Coolant Conditioner Test Kit in order to check the concentration of the coolant.
- Park the machine on level ground.
- Stop the engine and allow the engine to cool.
Note: The pressure must be removed from the system before service can be performed. Refer to this Operation and Maintenance Manual, "System Pressure Release".
Show/hide table
Illustration 1 g02597546 (1) Access door
(2) Coolant system sight glass - Open the access door (1) on the top of the engine compartment. Slowly remove the cooling system pressure cap.
Note: Refer to Operation and Maintenance Manual, "General Hazard Information" for information on containing fluid spillage.
- It may be necessary to drain some coolant from the radiator so that Caterpillar Extender can be added to the cooling system.
Note: Always discard drained fluids according to local regulations.
- Add Caterpillar Extended Life Coolant (ELC) to the cooling system. Refer to the following topics for the proper amount of Caterpillar Extender:
- Special Publication, SEBU6250, "Caterpillar Machine Fluids Recommendations"
- Operation and Maintenance Manual, "Capacities (Refill)"
- Observe sight gauge (2) and maintain the coolant at the proper level. Refer to Operation and Maintenance Manual, "Cooling System Coolant Level - Check".
- Install the cooling system pressure cap and close the access door.
