5-20
INSPECTION AND MAINTENANCE
Filling the Cooling System
1. Close the radiator drain cock and the engine
water drain plug.
2. From the radiator water inlet, slowly add the
coolant up to the filler opening. To avoid air
intrusion, the coolant should be supplied
slowly.
3. Loosen the air bleeder plug of the EGR
cooler to remove any air from the coolant.
CAUTION
When the air bleeder plug has been loosened, make sure to replace the
gasket with a new one.
•
4. Tighten the air bleeder plug when the
coolant overflows from the air bleeder plug.
Air bleeder plug tightening torque
27.5 N·m (2.8 kgf·m/20 lb·ft)
5. Firmly close the radiator cap.
6. Fill the reserve tank with the coolant up to the specified level, and close the cap
of the reserve tank.
CAUTION
When coolant overflows, take care that it does not splash onto exhaust system
components. Also, make sure to wipe it off as it could ignite.
•
7. Start the engine and then stop the engine after idling for approx. 3 minutes.
8. After making sure that the coolant has cooled down, slowly remove the radiator
cap and if the coolant level has lowered, add the coolant up to the radiator filler
opening.
9. Securely install the radiator cap, start the engine and warm the engine by idling.
If there is a heater, it is necessary to clear out air from the heater circuits. Set
the temperature setting and blower speed to MAX. Additionally, warm up the
engine at approx. 1500 rpm or more until the engine coolant temperature gauge
stabilizes (coolant temperature: approx. 75 - 90°C (167 - 194°F)), and stop the
engine.
Air bleeder plug
Air bleeder plug
IDE-6450A4500781ALL.indd5-20IDE-6450A4500781ALL.indd5-20 2014/04/1814:20:032014/04/1814:20:03
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