Doosan D20S-5 Operation & Maintenance Manual page 158

Maintenance Section Maintenance Section
Coolant Level – Check Coolant Level – Check
At operating temperature, the engine coolant is At operating temperature, the engine coolant is
hot and under pressure. hot and under pressure.
Steam can cause personal injury. Steam can cause personal injury.
Check the coolant level only after the engine Check the coolant level only after the engine
has been stopped and the filter cap is cool has been stopped and the filter cap is cool
enough to touch with your bare hand. enough to touch with your bare
Remove the filter cap slowly to relieve pressure. Remove the filter cap slowly to r
Cooling system conditioner contains alkali. Cooling system conditioner contains alkali.
Avoid contact with the skin and eyes to prevent Avoid contact with the skin and eyes to prevent
personal personal
1. 1. Observe the coolant le Observe the coolant level with engine cold.
Maintain coolant level to the proper line on Maintain coolant level to the proper line on
expansion bottle. If the expansion bottle has no expansion bottle. If the expansion bottle has no
coolant, it will be necessary to check coolant at coolant, it will be necessary to check coolant at
the radiator filter neck. the radiator filter neck.
2. 2. Remove the radiator cap. Fill radiator to the top Remove the radiator cap. Fill radiator to the top
of the filter neck. Inspect radiator cap. Replace of the filter neck. Inspect radiator cap. Replace
if damaged. Install the radiator cap. if damaged. Install the radiator cap.
WARNING WARNING
hand.
elieve pressure.
4TNV98 Diesel Engine 4TNV98 Diesel Engine
vel with engine cold.
-155- -155-
3. 3. Start and run the engine to stabilize the coolant Start and run the engine to stabilize the coolant
level in the filter neck. If low, add coolant until it level in the filter neck. If low, add coolant until it
reaches the top of the filter neck. Install the reaches the top of the filter neck. Install the
radiator cap. Observe coolant level in the radiator cap. Observe coolant level in the
expansion bottle. If necessary, add coolant to expansion bottle. If necessary, add coolant to
bring the coolant to the appropriate line on the bring the coolant to the appropriate line on the
expansion bottle. expansion bottle.
4. 4. Stop the engine. Stop the engine.
5. 5. Inspect the cooling system for leaks, hose Inspect the cooling system for leaks, hose
cracks or loose cracks or loose connectio connections.
Pressure air can cause personal injury. Pressure air can cause personal injury.
When using pressure air for cleaning, wear a When using pressure air for cleaning, wear a
protective face shield, protective clothing and protective face shield, protective clothing and
protective shoes. protective shoes.
Maximum air pressure must be less than 205 Maximum air pressure must be less than 205
kPa (30 psi) for cleaning purposes. kPa (30 psi) for cleaning purposes.
6. 6. Blow any dust and lint from the radiator fin Blow any dust and lint from the radiator fins. s.
ns.
WARNING WARNING