NUT 0996418 - Caterpillar

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.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the machine. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Dispose of all fluids according to local regulations and mandates.
Mixing ELC with other products reduces the effectiveness of the ELC and shortens the ELC service life. Use only Caterpillar products or commercial products that have passed the Caterpillar EC-1 specification for premixed or concentrate coolants. Use only Caterpillar ELC Extender with Caterpillar ELC. Failure to follow these recommendations can result in shortened cooling system component life.
Note: Your Challenger cooling system is filled at the factory with Caterpillar Extended Life Coolant (ELC). Read Operation and Maintenance Manual, "Cooling System Specifications" carefully before you change or before you add coolant.See the appropriate topics in your machine's Operation and Maintenance Manual for all cooling system requirements.Note: For more information about Extended Life Coolant (ELC), see Operation and Maintenance Manual, "Extended Life Coolant (ELC)".Some engines utilize Extended Life Coolant (ELC). See the Operation and Maintenance Manual, "Maintenance Interval Schedule" for the proper service interval. If an ELC was previously used, flush the cooling system with clean water. No other cleaning agents are required.Change the engine coolant more frequently if you find any of the following conditions:
The cooling system is heavily contaminated.
The engine overheats.
Foam in the radiator is observed.
The oil cooler has failed and oil is in the coolant.
Fuel has contaminated the cooling system.
The cooling system contains non-Caterpillar products.It is important to replace the thermostat in order to avoid any unexpected failure of the thermostat. This is a good preventive maintenance practice that reduces the chances of unscheduled downtime. Failure to replace the thermostat on a regularly scheduled basis could cause severe engine damage.Note: If you are only replacing the thermostat, drain the coolant from the cooling system so that the level of the coolant is below the thermostat housing.Always operate Caterpillar engines with a thermostat because these engines have a shunt design cooling system.Note: Thermostats can be reused if the thermostats meet certain test specifications. The tested thermostats must not be damaged and the tested thermostats must not have an excessive buildup of deposits.
Park the machine on a hard, level surface. Allow the engine to cool and allow the radiator to cool.
Raise the hood in order to access the radiator.Note: See Operation and Maintenance Manual, "Engine Compartment