YOKE 0685189 - 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 the cooling system pressure cap only when the engine is stopped and is cool enough to touch with your bare hand. Lift the lever on the pressure cap to relieve the cooling system pressure before removing the pressure cap.Do not attempt to tighten hose connections when the coolant is hot because the hose can come off which could result in burns.Cooling System Coolant Additive contains alkali. Avoid contact with skin and eyes.
Adding coolant to an overheated engine could result in damage to the engine. Allow the engine to cool before adding coolant.If the machine is to be stored in, or shipped to, an area with freezing temperatures, the cooling system must be protected to the lowest outside (ambient) temperature.The engine cooling system is normally protected to a minimum of −29°C (−20°F) with Caterpillar Antifreeze, when shipped from the factory unless special requirements are defined.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat products.Dispose of all fluids according to local regulations and mandates.
Excessive additive (greater than the recommended 6% initial fill) together with concentrations of antifreeze greater than 60% cause deposits to form and can result in radiator tube blockage and overheating.
Mixing ELC with other products reduces the effectiveness of the coolant and shortens coolant life. Use only Caterpillar products or commercial products that have passed the Caterpillar EC-1 specifications for premixed or concentrate coolants. Use only Caterpillar Extender with Caterpillar ELC. Failure to follow these recommendations could result in the damage to cooling systems components.If ELC cooling system contamination occurs see the topic Extended Life Coolant (ELC) in the Special Publication, SEBU6250, "Caterpillar Machine Fluids Recommendations".
When a Caterpillar Extended Life Coolant (ELC) is used, an Extender must be added to the cooling system.Reference: For the proper service interval, refer to the Operation and Maintenance Manual, "Maintenance Interval Schedule" for the machine that is being serviced.The amount of extender is determined by the cooling system capacity.Reference: For information on the cooling system capacity, refer to the Operation and Maintenance Manual, "Lubricant Viscosities and Refill Capacities" for the machine that is being serviced.Reference: For all cooling system requirements, refer to Caterpillar Machine Fluids Recommendations, SEBU6250 or consult your Cat dealer.
Illustration 1 g03117617
Lift the lever on the pressure cap in order to relieve the cooling system pressure. Remove the pressure cap.
Drain enough coolant from the radiator to allow for the addition of the liquid coolant extender. Note: Make sure that the coolant is drained into a suitable container.
Add the recommended