COOLING SYSTEM Figure 10-70-2 WARNING Wear safety glasses to prevent eye injury when any of the following conditions exist: When fluids are under pressure. Flying debris or loose material is present. Engine is running. Tools are being used. 1 W-2019-1285 Check the cooling system every day to prevent over- heating, loss of performance or engine damage. P-32844 Cleaning The Cooling System The surge tank (Item 1) [Figure 10-70-2] must be half full when the engine is cold. Open the right side cover. Use air pressure or water pressure to clean the radiator oil cooler. Be careful not to damage the fins when cleaning.
IMPORTANT Checking Coolant Level (S/N 522311001 & Above) AVOID ENGINE DAMAGE Always use the correct ratio of water to antifreeze. To much antifreeze reduces cooling system efficiency and may cause serious premature engine damage. WARNING Do not remove radiator cap when the engine is hot. You can be seriously burned. Too little antifreeze reduces the additives which protect the internal engine components; reduces the boiling point and freeze protection of the system. W-2070-1285 Open the right side cover. Always add a premixed solution. Adding full strength concentrated coolant can cause serious premature engine damage.
Figure 10-70-1 I-2124-0497 1 P-32693 Check the coolant level in the surge tank (Item 1) [Figure 10-70-1] . 442 Excavator 10-70-1 Service Manual