4. The keyswitch will allow the electric priming pump
to operate. When fuel free from air comes from the
vent screw (2), tighten the vent screw to a torque
of 24 N·m (212. lb in). Then, operate the electric
priming pump for 2 minutes.
5. Turn the keyswitch to the “OFF” position. The fuel
system should now be primed and the engine
should be able to start.
6. Operate the engine starter and crank the engine.
After the engine has started, operate the engine at
low idle for a minimum of 5 minutes. For constant
speed engines do not apply load for 5 minutes.
Note: Operating the engine for this period will help
ensure that the fuel system is free of air.DO NOT
loosen the high-pressure fuel lines to purge air
from the fuel system. This procedure is not
required.
7. Ensure that the fuel system is free from leaks.
After the engine has stopped, you must wait for 10
minutes to allow the fuel pressure to be purged from
the high-pressure fuel lines before any service or
repair is performed on the engine fuel lines. The 10
minute wait will also allow static charge to dissipate
from the low-pressure fuel system. If necessary,
perform minor adjustments. Repair any leaks from
the low-pressure fuel system and from the cooling,
lubrication, or air systems. Replace any high-
pressure fuel line that has leaked. Refer to
Disassembly and Assembly Manual, “Fuel Injection
Lines - Install”.
If you inspect the engine in operation, always use the
proper inspection procedure to avoid a fluid
penetration hazard. Refer to Operation and
Maintenance Manual, “General hazard Information”.
If the engine will not start, refer to Troubleshooting,
“Engine Cranks but will not Start”.
i06299386
Fuel System Primary Filter
(Water Separator Element -
Replace
Fuel leaked or spilled onto hot surfaces or electri-
cal components can cause a fire. To help prevent
possible injury, turn the start switch off when
changing fuel filters or water separator elements.
Clean up fuel spills immediately.
Note: Refer to Systems Operation, Testing, and
Adjusting, “Cleanliness of Fuel System
Components” for detailed information on the
standards of cleanliness that must be observed
during ALL work on the fuel system.
NOTICE
Ensure that the engine is stopped before any servic-
ing or repair is performed.
Remove the Element
1. Turn the fuel supply valve (if equipped) to the OFF
position before performing this maintenance.
2. Place a suitable container under the water
separator in order to catch any fuel that might spill.
Clean up any spilled fuel. Clean the outside body
of the filter assembly.
Illustration 62 g03891253
3. Open drain valve (6) and open vent screw (1) and
drain the filter. Close drain screw and close vent
screw. Use only hand pressure in order to tighten
the drain screw and the vent screw.
4. Remove filter bowl (5) from filter (2) and remove
filter element (3) from filter (2). Discard filter
element (3).
SEBU9075-03
95
Maintenance Section
Fuel System Primary Filter (Water Separator) Element - Replace
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