freightliner 108SD 2021, Руководство пользователя

Страница: 153 / 191

9. Install the clear cover and the collar. Simultane-
ously apply downward pressure to the top of the
clear cover until it is seated on the body of the
lower housing and hand tighten the collar until it
no longer spins freely. Using the collar wrench,
tighten the cover 18 lbf·ft (24 N·m). This is
equivalent to rotating the collar clockwise two or
three additional ribs, depending on the specific
filter model.
10. Prime the system
10.1 Ensure that the drain valve is closed.
10.2 Fill the housing to the top of the filter ele-
ment with clean diesel fuel.
10.3 Install and hand-tighten the vent cap
O-ring and vent cap.
10.4 Start the engine. When the lubricating oil
reaches its normal operating pressure,
increase engine speed to high idle for
one to two minutes to purge air from the
system.
10.5 While the engine is running, and after the
air is purged from the system, loosen the
vent cap until the fuel level falls to just
above the collar, then hand-tighten the
vent cap.
10.6 Check for leaks and shut down the en-
gine.
Detroit
The only maintenance necessary on an Detroit
fuel/water separator is to replace the filter element.
See
Fig. 7 .
WARNING
Fluid circulated through the fuel/water separator
to heat the fuel may be diesel fuel returned from
the engine, or engine coolant. Drain the fuel/water
separator only when the engine and fluids have
cooled. Draining it when the engine is hot could
cause severe personal injury due to scalding.
If returning fuel is released into the atmosphere,
its vapors can ignite in the presence of any igni-
tion source. Do not expose the fuel to, or work
with the fuel system near, open flame or intense
heat. To do so could cause fire, possibly resulting
in serious personal injury or property damage.
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 bowl by turning counterclockwise.
4. Remove the element, bowl O-ring, and element
o-ring. Dispose of them in an environmentally
acceptable manner.
5. Thoroughly clean all of the threads and sealing
surfaces. Even a small amount of dirt will prevent
the fuel/water separator from sealing, and an air
leak may result.
6. Apply a coating of clean fuel or motor oil to the
new O-ring and to the new element o-ring.
7. Insert the new element into the upper housing.
IMPORTANT: Do not use tools to tighten the
bowl and element.
8. Spin the bowl onto the onto the upper housing
by hand only.
9. Connect the water sensor and heater connectors
if equipped.
f470689 06/09/2016
1
2
1. Mounting Head 2. Sight Bowl
Fig. 7, Detroit Fuel/Water Separator
Fuel
47
108SD and 114SD Maintenance Manual, May 2018
47/6