TRANSMISSION AR 4681342 - Caterpillar

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Jacket water heat exchanger drain (Some parts removed for visibility)
SCAC System
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SCAC pump outlet bonnet drain
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SCAC heat exchanger drain
Radiator System
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(1) Jacket water outlet drain valve
(2) SCAC outlet drain valve
(3) SCAC inlet drain valve Flush
Systems Filled with Cat ELC, Cat ELI, or a Conventional Coolant that Meets the Cat EC-1 Requirements and the Standards of ASTM D6210
Flush the cooling system with clean water in order to remove any debris.
Close the drain valves (if equipped). Clean the drain plugs. Install the drain plugs. Refer to the Specifications Manual, SENR3130, "Torque Specifications" for more information on the proper torques.
Fill the cooling system no faster than 19 L (5 US gal) per minute to avoid air locks.
Fill the cooling system with clean water. Install the cooling system filler cap.
Start and run the engine at low idle until the temperature reaches 49 to 66 °C (120 to 150 °F).
Stop the engine and allow the engine to cool. Loosen the cooling system filler cap slowly in order to relieve any pressure. Remove the cooling system filler cap. Open the drain valves (if equipped)