COUPLING 5P7488 - Caterpillar

Drain the Cooling System
Stop the engine and allow the engine to cool. Close the water inlet for the separate circuit aftercooler (if equipped). Ensure that the engine will not start when the cooling system is drained.
Loosen the radiator filler cap slowly in order to relieve any pressure. Remove the radiator filler cap.
Illustration 1 g00750410
(1) Coolant drain Note: If the engine has a jacket water heater, drain the coolant from the heater.
Open the coolant drain. 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 the disposal and the recycling of used coolant, consult your Caterpillar dealer or consult Caterpillar Dealer Service Tools:Inside U.S.A. 1-800-542-TOOL
Inside Illinois 1-800-541-TOOL
Canada 1-800-523-TOOL
EAME phone ++41-22-849 40 56
EAME fax ++41-22-849 49 29
Clean the Cooling System
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.
After the cooling system has been drained, flush the cooling system with clean water in order to remove any debris.
Close the cooling system drain. Clean the cooling system drain plugs and