7-23
Operate the engine for 5 minutes with the
coolant temperature above 80°C (176°F).
Shut the engine off, and drain the cooling
system.
②
OFF
Fill the cooling system with clean water.
Be sure to vent the engine and aftercooler for
Be sure to vent the engine and aftercooler for
complete filling.
complete filling.
Do not install the radiator cap or the new
Do not install the radiator cap or the new
coolant filter.
coolant filter.
③
※
※
Operate the engine for 5 minutes with the
coolant temperature above 80 °C (176 °F).
Shut the engine off, and drain the cooling
system.
If the water being drained is still dirty, the
If the water being drained is still dirty, the
system must be flushed again until the water
system must be flushed again until the water
is clean.
is clean.
④
※
OFF
250D9MI10
250D9MI38
250D9MI10
The system must be filled properly to prevent
The system must be filled properly to prevent
air locks.
air locks.
During filling, air must be vented from the
During filling, air must be vented from the
engine coolant passages. Wait 2 to 3
engine coolant passages. Wait 2 to 3
minutes to allow air to be vented; then add
minutes to allow air to be vented; then add
mixture to bring the level to the top.
mixture to bring the level to the top.
Adequate venting is provided for a fill rate of
Adequate venting is provided for a fill rate of
19
19 liters/minute
liters/minute (5
(5 U.S.gal/minute
U.S.gal/minute)
※
2609A6MA16
