Ford F-650 2015 Owner's Manual page 124

NOISE EMISSIONS
In order to keep to the federal exterior noise regulations, your vehicle
may be equipped with noise emission items. Depending on your vehicle
configuration, it may have all or some of the following items:
Air Intake System: Inspect the air cleaner. Do not alter its location. Do
not alter inlet and outlet piping.
Body: Inspect wheel well splash shields, cab shields and under hood
insulation for deterioration, dislocation and orientation.
Cooling System:
• Inspect the fan for blade damage. If you find any damage, replace
with the recommended parts. Inspect for fan-to-shroud interference
and any damage to shroud, such as cracks and holes.
• Do not change fan ratio or alter fan spacer dimensions and positions.
• Inspect fan clutch for proper operation. Make sure the fan is
disengaged when cooling of the engine is not required.
• Inspect radiator shutters (if equipped) for proper operation. The
shutters should be open during normal operating temperatures.
Engine: Valve covers and block covers damp-out engine mechanical
noise. If they need replacing, make sure to replace them with the
recommended parts. Check for mechanical isolations.
Transmission Enclosure: Inspect for cracks, holes and tears. Clean any
deposits, such as oil, dirt and stones.
Exhaust System:
• Inspect for leaks at various joint connections and loose clamps.
• Perform a visual inspection for cracks or holes in the muffler and tail
pipe.
• Always use the recommended replacement parts.
• Do not change the tail pipe elbow or offset tail pipe orientation 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 chapter.
2015 F-650/750 (f67)
Owners Guide gf, 2nd Printing, April 2014
USA (fus)
Fuel and Refueling 123