Operation and maintenance manual
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CoolingSystemFlushing
Caution: During filling, air must be vented from the
engine coolant passages. Open the engine
venting pet- cock and the petcock on the
aftercooler for aftercooled engines. The system
must be filled slowly to prevent air locks. Wait 2 to
3 minutes to allow air to be vented, then add
mixture to bring the level to the top.
Fill the system with a mixture of sodium carbonate
and water (or a commercially available
equivalent).
NOTE: Use 0.5 kilogram [1.0 pound] of sodium
carbonate for every 23 liters [6.0 U.S. gallons] of
water.
Caution: Do not install the radiator cap. The
engine is to be operated without the cap for this
process.
Operate the engine for 5minutes with the
coolant temperature above 80°C [176°F].
Shut the engine off and drain the cooling
system.
Fill the cooling system with clean water.
NOTE: Be sure to vent the engine and
aftercooler for complete filling.
NOTE: Do not install the radiator cap or
the new coolant filter.