9. The on engine primary fuel filter must be serviced.
On Engine Primary Fuel Filter
Element Remove
1. Place a suitable container under the water
separator to catch any fuel that might spill. Clean
up any spilled fuel. Clean the outside body of the
filter assembly.
Illustration 52 g03858194
Typical example
2. Install a suitable tube onto drain (3). Open the
drain valve (2). Rotate the drain valve
counterclockwise. Two full turns are required.
3. Loosen the vent screw (1).
4. Allow the fuel to drain into the container. If the fuel
will not drain, loosen the vent screw on the
secondary fuel filter.
Note: In some applications, the vent screw on the
secondary fuel filter will need to be open to drain the
on engine primary fuel filter.
5. Remove the tube from the drain valve.
6. Tighten the vent screw (1) to a torque of 2.5 N·m
(22 lb in). If necessary, tighten the vent screw on
the secondary fuel filter. Tighten to a torque of
2.5 N·m (22 lb in). Remove the wiring harness
from connection (4).
7. Rotate filter bowl (6) counterclockwise and remove
the filter bowl from assembly.
Illustration 53 g03858640
Typical example
M0090743 89
Maintenance Section
Fuel System Primary Filter (Water Separator) Element - Replace
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