User Manual - Page 388

For F-450 2020.

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The engine-mounted fuel filter is a plastic
disposable cartridge.
Removal
E226215
1
1. Disconnect the fuel lines by squeezing
the connector tabs and pulling the lines
straight off.
E226214
2
3
2. Rotate the filter fully counterclockwise
until the peg is at the far end of the slot.
3. Pull the filter straight up from the
bracket and discard the filter.
Note: No special air purge is necessary after
filter servicing. The fuel system purges the
air in the filters.
Installation
1. Install the new filter into the filter
bracket. Turn the filter clockwise to
lock it in place.
2. Reconnect the fuel lines.
3. Switch the ignition on for 30 seconds
and then switch the ignition off.
Repeat this operation six times in a row
to purge any trapped air from the fuel
system.
SPRING U-BOLT CHECK - F-
600
Check and tighten the U-bolt nuts after
your vehicle has been operated under load
for 1,000 mi (1,600 km) or six months,
whichever occurs first.
Check and tighten the U-bolt nuts every
37,000 mi (60,000 km).
Check and tighten the U-bolt nuts with
your vehicle at curb height and unloaded.
Inspect the U-bolt threads for rust and
debris. Clean the threads if contaminated.
U-bolt Nut Torque
Rear Axle
Note: Check and tighten the U-bolt nuts
evenly using a criss-cross pattern in the
following stages.
lb.ft (Nm)Stage
70 (100)1.
150 (200)2.
220 (300)3.
300 (400)4.
385
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 201909, First-Printing
Maintenance
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