Fuel Tank Band-Nut Tightening - freightliner CENTURY CLASS 2011 Maintenance Manual

Fuel
Racor 690
WARNING
Diesel fuel is flammable and can ignite if exposed
to an open flame, intense heat, or other ignition
source. Do not drain fuel near, or expose fuel
vapor to open flame or intense heat. Exposure to
open flame or intense heat could start a fire, pos-
sibly resulting in personal injury or property dam-
age. When working on a fuel system, have a fire
extinguisher within easy reach.
1. Drain off some fuel by loosening the vent plug
and opening the drain valve.
2. Disconnect the water sensor and heater connec-
tions, if equipped.
3. Remove the element and bowl, together, by turn-
ing counterclockwise.
4. Remove the bowl from the element, and clean
the O-ring.
5. Apply a coating of clean fuel or motor oil to the
new O-ring and element seal.
6. Spin the bowl onto the new element, then spin
them both onto the filter head snugly, by hand
only.
IMPORTANT: Do not use tools to tighten.
7. Connect the water sensor and heater connec-
tors, if equipped.
8. Prime the fuel separator.
8.1 Remove the 3/8-inch metal plug located
at the top of the fuel/water separator (see
Fig. 3, Ref. 2), and manually fill the unit
with diesel fuel.
8.2 Replace and tighten the 3/8-inch metal
plug when the unit is full.
9. Start the engine and check for fuel leaks.
10. Shut down the engine and correct any fuel leaks.
Century Class Trucks Maintenance Manual, January 2016
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8
7
09/15/95
1. Beige Mounting Head
2. Metal Plug, 3/8" NPT
3. Bowl O-Ring
4. Bowl Bevel-Cut
Gasket
5. Bowl Probe Plug
6. Water Sensor Probe
Fig. 3, Racor 690 Fuel Separator
47–03 Fuel Tank Band-Nut
Tightening
Hold each fuel tank band retention nut with a wrench
while backing off its jam nut. Then tighten the reten-
tion nuts 30 to 35 lbf·ft (41 to 46 N·m). After the re-
tention nuts have been tightened, hold each retention
nut with a wrench while tightening its jam nut 30 lbf·ft
(41 N·m).
IMPORTANT: Do not overtighten.
47
2
3
4
5
6
f470148
7. Heater Connector
8. Bowl Drain Valve
Assembly
9. Bowl with Drain and
Water Sensor
10. Service Element
47/3