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specifications will maximize the miles and hours of operation before a
DPF professional cleaning is required. Refer to your engine
manufacturer's owner's manual for more details regarding recommended
maintenance and service of your DPF.
Exhaust outlet assembly
WARNING: The normal operating temperature of the exhaust
system is very high. Never work around or attempt to repair any
part of the exhaust system until it has cooled. Failure to follow these
instructions may result in serious personal injury.
The exhaust outlet assembly on your vehicle is a uniquely functioning
device that accompanies the DPF assembly. It is designed to help control
the temperature of the exhaust during the DPF regeneration process. Do
not modify or remove this device. Modification of the system
and/or additions of aftermarket devices can reduce the
effectiveness of the system, as well as cause damage to the
exhaust system and/or engine. Any modifications may also
invalidate the vehicle and/or engine warranties. See the vehicle
and engine warranty guides for more information.
The inlet holes in the side of the assembly are functional. These holes
allow outside air to be drawn into the outlet assembly. The holes need to
be kept clear of mud and other foreign material to maintain proper
functionality of the system. One way to keep the holes clear is to spray
the outlet assembly with a hose when washing the vehicle. Failure to
keep the functional holes clear of foreign material may result in the holes
becoming blocked or plugged. Blocked/plugged holes or
modification/removal of the outlet assembly could result in
elevated exhaust temperatures which may result in
vehicle/property damage and/or personal injury.
NOISE EMISSIONS – EXTERIOR
In order to comply with the federal exterior noise regulations, your
vehicle may be equipped with noise emission items. Depending on the
vehicle configuration, it may have all or some of the following items:
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.
2011 F-650/750 (f67)
Supplement, 2nd Printing
USA (fus)
Maintenance and Specifications
213
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