Cooling System Flushing
During filling, air must be vented from the
engine coolant passages. The air vents
through the "jiggle pin" openings to the top
radiator hose and out the fill opening.
Additional venting is provided for engines
equipped with an aftercooler. Open the
petcock during filling.
Adequate venting is provided for a fill rate of
19 liters/minute [5 U.S. Gallon/minute].
Fill the system with a mixture of sodium carbonate
and water (or a commercially available equivalent).
Use 0.5 kilogram [1.0 pound] of sodium
carbonate for every 23 liters [6.0 U.S.
gallons] of water.
Do not install the radiator cap. The engine is
to be operated without the cap for this