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ENGINE COOLING SYSTEM
If your vehicle is equipped with a Caterpillar or Cummins engine,
refer to your engine operator’s manual for engine coolant check and
adding instructions as well as fluid specifications and capacities.
Inspect cooling system daily
Note: The engine coolant reservoir requires air space for expansion
volume. The proper fill level is identified on the reservoir; do not overfill
the reservoir.
To reduce the risk of personal injury or death, use only the
following procedure to remove the pressure-type cap from the
radiator or expansion tank.
1. Always allow the engine to cool first.
2. Wrap a thick, heavy cloth around the cap.
3. Loosen the cap slowly, then pause a moment. This will reduce the risk
of possible scalding by hot water or steam.
4. Continue to unscrew the cap and remove only after pressure in the
radiator is fully released.
Note: If the coolant should get extremely low and the engine very hot,
let the engine cool for approximately 15 minutes before adding coolant.
After the engine has cooled, start the engine and add coolant slowly.
Adding coolant to a hot engine may crack the cylinder head or
crankcase. Never use only water to fill the cooling system.
Adding engine coolant - 6.0L Power Stroke
When adding coolant, make sure it is a 50/50 mixture of engine coolant
and distilled water. Add the mixture to the coolant reservoir, when the
engine is cool, until the appropriate fill level is obtained.
To reduce the risk of personal injury, make sure the engine is
cool before unscrewing the coolant pressure relief cap. The
cooling system is under pressure; steam and hot liquid can come out
forcefully when the cap is loosened slightly.
Do not add engine coolant when the engine is hot. Steam and
scalding liquids released from a hot cooling system can burn you
badly. Also, you can be burned if you spill coolant on hot engine parts.
2006 F-650/750 (f67)
Supplement
USA (fus)
Maintenance and Specifications
181
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