2012 Ford F550 Cab Diesel Supplement 3rd Printing - Page 42

2012 Ford F550 Cab Manual

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Maintenance and Specifications 2. Reinstall the lower portion of the housing by slowly turning it clockwise onto DFCM housing, allowing fuel to soak into the fuel filter element. Tighten the lower housing until it contacts the mechanical stop. Note: The engine will not run properly if the DFCM fuel filter is not installed in the housing or if the filter bowl is not tightened to the mechanical stop. The system will need to be purged of air after removal/changing of the filter. See Purging air from the fuel system after DFCM and engine mounted fuel filter replacement following. Removal - Engine-mounted fuel filter The engine-mounted fuel filter is a plastic disposable cartridge. To remove it, do the following: 1. Disconnect both fuel lines by squeezing the connector tabs and pulling the lines straight off. Note: Although the fuel system is not fully pressurized when the vehicle is off, some residual pressure may remain in the fuel system since it can take some time for the pressure to completely bleed off. Therefore, it is recommended to place a shop rag below the filter connectors to absorb the small amount of fuel that will drain. 42 2012 Diesel (67l) Supplement, 3rd Printing USA (fus)

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2. Reinstall the lower portion of the
housing by slowly turning it
clockwise onto DFCM housing,
allowing fuel to soak into the fuel
filter element. Tighten the lower
housing until it contacts the
mechanical stop.
Note:
The engine will not run
properly if the DFCM fuel filter is
not installed in the housing or if the
filter bowl is not tightened to the
mechanical stop.
The system will need to be purged of air after removal/changing of the
filter. See
Purging air from the fuel system after DFCM and engine
mounted fuel filter replacement
following.
Removal - Engine-mounted fuel filter
The engine-mounted fuel filter is a plastic disposable cartridge. To
remove it, do the following:
1. Disconnect both fuel lines by
squeezing the connector tabs and
pulling the lines straight off.
Note:
Although the fuel system is not fully pressurized when the vehicle
is off, some residual pressure may remain in the fuel system since it can
take some time for the pressure to completely bleed off. Therefore, it is
recommended to place a shop rag below the filter connectors to absorb
the small amount of fuel that will drain.
Maintenance and Specifications
42
2012 Diesel
(67l)
Supplement, 3rd Printing
USA
(fus)