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COOLING SYSTEM
COOLANT LEVEL
Check the coolant level in the radiator daily, only when the engine is cool.
Maintain the coolant level at approximately 3/4 inches (1.9 cm.) below the filler neck seat on the radiator when
the coolant is cold. See Figure 32
Whenever coolant level checks are made, check condition of radiator cap rubber seal. Make sure it is clean
and free of any dirt particles. Rinse off with clean water if necessary. When replacing cap on radiator, also
make sure radiator filler neck is clean.
P4404
Never remove the radiator cap under any conditions while the engine is operating. Failure to follow these instruc-
tions could result in damage to the cooling system or engine and/or personal injury. To avoid having scalding hot
coolant or steam blow out of the radiator, use extreme care when removing the cap from a hot radiator, if possible,
wait until the engine has cooled, then wrap a thick cloth around the radiator cap and turn it slowly to the first stop.
Step back while the pressure is released from the cooling system. When you are sure all the pressure has been
released, press down on the cap (still with a cloth), turn and remove it.
Do not add coolant to an engine that has become overheated until the engine cools. Adding coolant to an
extremely hot engine can result in a cracked block or cylinder head. Use only a permanent type coolant that
meets FORD specification ESE-M97B44-A such as FORD Cooling System Fluid. Refer to the coolant chart on
the container for additional antifreeze protection information. Do not use alcohol or methanol antifreeze, or mix
them with the specified coolant.
Plain water may be used in an emergency, but replace it with the specified coolant as quickly as possible to
avoid damage to the system. With only water in the system, do not let engine run hot.
RADIATOR
Inspect the exterior of the radiator for obstructions. Remove all bugs, dirt or foreign material with a soft brush or
cloth. Use care to avoid damaging the fins. If available, use compressed air or a stream of water in the oppo-
site direction to normal airflow. Open door for access.
Check all hoses and connections for leaks. If any of the hoses are cracked, frayed, or feel spongy, they should
be replaced.
American-Lincoln
3366XP
GENERAL MACHINE MAINTENANCE
COOLANT LEVEL
3/4 TO 1-1/2 INCHES
BELOW CAP SEAL
FIGURE 32
WARNING
1-37
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