
NOTICE
Improper or incomplete rinsing of the cooling system
can result in damage to copper and other metal
components.
To avoid damage to the cooling system, make sure to
completely flush the cooling system with clear water.
Continue to flush the system until all signs of the
cleaning agent are gone.
6.
Stop the engine and allow the engine to cool.
Loosen the cooling system filler cap slowly to
relieve any pressure. Remove the cooling system
filler cap. Open the drain tap or remove the drain
plug on the engine. Open the drain tap or remove
the drain plug on the radiator. Allow the water to
drain. Flush the cooling system with clean water.
Fill
1.
Install the drain plug or close the drain tap (if
equipped) on the engine.
2.
Install the drain plug or close the drain tap (if
equipped) on the radiator.
NOTICE
Do not fill the cooling system faster than 5 L
(1.3 US gal) per minute to avoid air locks.
Cooling system air locks may result in engine
damage.
3.
Fill the cooling system with Commercial Heavy-
Duty Coolant. Add Supplemental Coolant Additive
to the coolant. For the correct amount, refer to the
Operation and Maintenance Manual, “Fluid
Recommendations” topic (Maintenance Section)
for more information on cooling system
specifications. Do not install the cooling system
filler cap.
4.
Start and run the engine at low idle. Increase the
engine rpm to high idle. Run the engine at high
idle for one minute to purge the air from the
cavities of the engine block. Stop the engine.
5.
Check the coolant level. Maintain the coolant level
within 13 mm (0.5 inch) below the bottom of the
pipe for filling. Maintain the coolant level in the
expansion bottle (if equipped) at the correct level.
Illustration 53
g06165279
Typical example
6.
Clean the cooling system filler cap(1). Inspect the
gasket (2) that is on the cooling system filler cap. If
the gasket that is on the cooling system filler cap is
damaged, discard the old cooling system filler cap
and install a new cooling system filler cap. If the
gasket that is on the cooling system filler cap is not
damaged, use a suitable pressurizing pump to
pressure test the cooling system filler cap.
• Cooling system filler cap pressure for three
cylinder engine 95 kPa (13.7 psi)
• Cooling system filler cap pressure for four
cylinder engine 110 kPa (15.9 psi)
Note:
The correct pressure for the cooling system
filler cap is stamped on the face of the cooling system
filler cap.
If the cooling system filler cap passes the pressure
test check, install the filler cap. If required install
new cooling system filler cap.
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