Doosan HP375WCU, Руководство по эксплуатации и обслуживанию

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Operation & Maintenance Manual Maintenance
52
DRAIN and FLUSH RADIATOR (2000 hour intervals)
1. Level the unit and shut off the engine.
WARNING
!
DO NOT attempt this procedure when the engine is hot. Wait for the
engine, muffler and tailpipes to cool down before proceeding. Failure to
do so could result in severe burns.
2. Unlatch and open the engine cover. Allow time for the engine to cool down
before proceeding. Draining and flushing the engine cooling system while the
engine is still hot can cause cracks in the engine block.
WARNING
!
NEVER remove the radiator cap while the engine is hot. The cooling
system is under pressure. Hot coolant can cause severe burns or eye
injury. Wear protective clothing and safety glasses.
3. Slowly turn the radiator cap to the first stop and allow any pressure to escape.
Remove the radiator cap.
4. Locate the petcock on the bottom of the radiator. Place a hose onto the petcock
and channel the coolant into a container. Open the petcock and allow the
coolant to drain.
5. Flush the radiator with clean water and allow to drain. After radiator is drained,
close the petcock and remove the hose.
6. Transfer used coolant to a properly labeled container and dispose of properly.
7. Drain the contents of the overflow bottle by removing the overflow hose from
the radiator fill neck. Use the hose to channel the coolant into a container.
Transfer the used coolant to a properly labeled container and dispose of
properly.
8. Reattached the overflow hose to the radiator fill neck.
9. Fill the radiator completely with a 50/50 mixture of ethylene glycol and water.
Replace the radiator cap. Add coolant to the overflow bottle until the bottle is 1/
2 to 3/4 full. This “overfilling” will compensate for any air in the cooling system.
10. Clean any dirt and debris from the radiator fins and core.
11. Start the engine and run the vehicle to the normal operating temperature, then
shut off the engine. While the engine is cooling, check for leaks.