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Air Intake System
• Air Cleaner: should be inspected and its location should not be
altered. Do not alter inlet and outlet piping.
Body
• Wheel Well: splash shields, cab shields and under-hood insulation
should be inspected for deterioration, dislocation, and orientation.
Cooling System
• Check the fan for damage to blades; replace, if damaged, with the
recommended parts. Inspect for fan to shroud interference, and any
damage to shroud such as cracks and holes.
• The fan ratio should not be changed and the fan spacer dimensions
and positions should not be altered.
• Inspect the fan clutch for proper operation, make sure that the fan is
disengaged when cooling of the engine is not required.
• Check for proper operation of radiator shutters, if equipped. The
shutters should be open during normal operating temperatures.
Engine and Driveline System
• Transmission Enclosure: inspect for cracks, holes, and tears. Clean
any deposits such as oil, dirt, and stones.
• Engine valve covers and block covers are made to damp out engine
mechanical noise and, if needed, should be replaced with
recommended parts. Check for mechanical isolations.
Exhaust System
• Inspect the exhaust system for leaks at various joint connections and
tighten the clamps.
• Do a visual inspection for cracks or holes in the muffler and tail pipe.
• Always use the recommended parts when items need to be replaced.
• The tail pipe elbow or offset tail pipe orientation must not be changed
from the standard position as originally received.
• To avoid abnormal changes in vehicle sound levels, it is necessary for
the owner to perform inspections and necessary maintenance at the
intervals shown in the Scheduled Maintenance Guide chapter.
CHASSIS-MOUNTED CHARGE AIR COOLER
Inspect charge air cooler daily
With the engine off, visually inspect the charge air cooler core assembly
for debris and clogging of external fins. Prior to engine operation,
remove any debris blocking the core.
2006 F-650/750 (f67)
Supplement
USA (fus)
Maintenance and Specifications
203
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