Doosan D20S-5 Operation & Maintenance Manual page 200

4TNE98 3.3L Diesel Engine 4TNE98 3.3L Diesel Engine
Maintenance Section Maintenance Section
Hold the drain port when the radiator drain valve is Hold the drain port when the radiator drain valve is
turned because the tank and the drain port are turned because the tank and the drain port are
separated. separated.
4. 4. After draining the coolant completely, close the After draining the coolant completely, close the
radiator drain valve and the block drain plug, fill radiator drain valve and the block drain plug, fill
the engine and the radiator full with a radiator the engine and the radiator full with a radiator
cleaner, and clean the engine and the radiator. cleaner, and clean the engine and the radiator.
5. 5. Start and run the engine fo Start and run the engine for 30 minutes.
6. 6. Stop the engine and drain the cleaning solution Stop the engine and drain the cleaning solution
into a suitable container. into a suitable container.
7. 7. Flush the system with clean water, until draining Flush the system with clean water, until draining
water is clear. water is clear.
8. 8. Close the drain valve and install the block drain Close the drain valve and install the block drain
plug. Fill coolant to top of the filler neck. plug. Fill coolant to top of the filler neck.
9. 9. Start and run the engine to stabilize the coolant Start and run the engine to stabilize the coolant
level. See topic, "Coolant Level – Check" in level. See topic, "Coolant Level – Check" in
"Every 10 Service hours or Daily". "Every 10 Service hours or
NOTICE NOTICE
r 30 minutes.
Daily".
-197- -197-