FASTENER GP-CYLINDER HEAD 6I4025 - Caterpillar

You must read and understand the warnings and instructions contained in the Safety section of this manual before performing any operation or maintenance procedures.Before proceeding with this maintenance, perform all previous maintenance requirements.Cooling System (Extended Life Coolant Only)
Do not perform this maintenance until you read and understand the material in the Safety and Cooling System Specifications sections of this publication.
Add Extender
Caterpillar Extended Life Coolant (ELC) does not require the frequent Supplemental Coolant Additive (SCA) additions associated with the present conventional coolants. Only a "one time" coolant Extender is required.Extender should be added to ELC Every 3000 Hours or Two Years, whichever comes first.Check the cooling system only when the engine is stopped and cool.1. Loosen the radiator filler cap slowly in order to relieve pressure. Remove the radiator filler cap.2. It may be necessary to drain enough coolant from the cooling system in order to allow for the addition of the Extender.3. Add Extender according to the requirements for your engine's cooling system capacity. Refer to the Refill Capacities chart in this manual for the cooling system capacity for your engine. Refer to the Coolant Specifications in this manual for the Caterpillar ELC Extender Additions chart.4. Clean the radiator filler cap. Inspect the radiator filler cap gaskets. If the gaskets are damaged, replace the old radiator filler cap with a new radiator filler cap. Clean the radiator filler cap receptacle. Install the radiator filler cap.Cooling System (Conventional HD Coolant/Antifreeze Only)
Drain/Clean/Replace Coolant
Do not perform this maintenance until you read and understand the material in the Safety and Cooling System Specifications sections of this publication.
Clean/Flush the cooling system before the recommended maintenance interval if: * Coolant is heavily contaminated.* The engine overheats frequently.* Foaming is observed in the radiator.* The oil cooler has failed, allowing oil to contaminate the coolant.* Fuel has entered the cooling system and contaminated the coolant.* Commercial cooling system products other than Caterpillar products are used.
When using commercial antifreeze/coolant products from a manufacturer other than Caterpillar, drain, clean, and refill the cooling system every year or 1,500 service hours, whichever comes first.Use of commercially available cooling system cleaners may cause damage to cooling system components. Use only cooling system cleaners that are approved for Caterpillar engines.
A good time to inspect the water pump, replace the thermostat, and replace hoses is when your engine's cooling system has been drained.Drain
Filler Cap (1), Drain Valve (2).1. Stop the engine and allow the engine to cool. Loosen the coolant filler cap slowly to relieve any pressure, and remove the cap.2. Remove the cooling system drain plug(s) or open the drain valve. Remove the drain plug from the bottom of the water pump housing (if equipped) and/or radiator. Allow the coolant to drain.
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 disposal and recycling of used coolant:
Contact Caterpillar