freightliner Custom Classic MT45 2022, Maintenance Manual

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9. Install the new filter and grommet assembly and
cover O-ring on the housing.
10. 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.
11. Prime the system.
11.1 Ensure that the drain valve is closed.
11.2 Fill the housing to the top of the filter ele-
ment with clean diesel fuel.
11.3 Install and hand-tighten the vent cap
O-ring and vent cap.
11.4 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.
11.5 While the engine is running, and after the
air is purged from the system, loosen the
vent cap until the fuel level falls to about
one inch (2.5 cm) above the collar, then
hand-tighten the vent cap.
11.6 Check for leaks and shut down the en-
gine.
Alliance
The only maintenance necessary on an Alliance
fuel/water separator is to replace the filter element.
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. Place a suitable drain pan under the fuel/water
separator and open the drain valve. Drain
12/13/2010 f470531a
3
4
5
6
7
8
9
10
11
13
14
1
2
12
1. Drain Valve
2. Bottom Plate
Assembly
3. Bottom Plate O-Ring
4. Lower Housing
5. Cover O-Ring
6. Filter Element
7. Spring
8. Clear Cover
9. Vent Cap O-Ring
10. Vent Cap
11. Collar
12. Grommet
13. Inlet Port/Check Valve
14. Heat Exchanger
Fig. 6, DAVCO Fuel Pro 382
Fuel
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