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Fuel System
Maintenance
Fuel Maintenance
This Operator's Manual contains more detailed fuel
and fuel system maintenance information than the
engine Owner's Manual, which is a general-purpose
reference relating to fuel and fuel maintenance.
Ensure that you understand that the fuel system
maintenance, fuel storage, and fuel quality require
your attention to avoid downtime and extensive
engine repairs.
The fuel system has extremely tight tolerances due
to the emissions and control requirements. Diesel
fuel quality and cleanliness is more important for
the longevity of today's high-pressure common rail
(HPCR) fuel-injection system used on diesel engines.
Important:
Water or air in the fuel system will
damage your engine! Do not assume that new fuel
is clean. Ensure that your fuel is from a quality
supplier, store your fuel correctly, and use your
fuel supply within 180 days.
Important:
If you do not follow the procedures for
fuel filter replacement, fuel system maintenance,
and fuel storage, the engine fuel system could fail
prematurely. Perform all fuel system maintenance
at the specified intervals or whenever the fuel is
contaminated or its quality is poor.
Storing Fuel
Appropriate fuel storage is critical for your engine.
Proper maintenance of fuel storage tanks is often
overlooked and leads to the contamination of fuel
delivered to the machine.
•
Acquire only enough fuel that you will consume
within 180 days. Do not use fuel that has been
stored for more than 180 days. This helps
eliminate water and other contaminates in the fuel.
•
If you do not remove the water from the storage
tank or machine fuel tank, it can lead to rust or
contamination in the storage tank and fuel system
components. Tank sludge developed by mold,
bacteria, or fungus restricts flow and clogs the filter
and fuel injectors.
•
Inspect your fuel storage tank and machine fuel
tank regularly to monitor the fuel quality in the tank.
•
Ensure that your fuel comes from a quality supplier.
•
If you find water or contaminants in your storage
tank or machine fuel tank, work with your fuel
provider to correct the problem and perform all fuel
system maintenance.
•
Do not store diesel fuel in tanks or canisters made
with zinc-plated components.
Servicing the Fuel-Water
Separator
Draining Water from the Fuel/Water
Separator
Service Interval: Before each use or daily—Drain
water or other contaminants from
the fuel/water separator.
1.
Drain water from the fuel/water separator as
shown in
Figure
2.
Prime the filter and the lines to the high pressure
pump; refer to
54).
Replacing the Fuel/Water
Separator Filter
Service Interval: Every 400 hours—Replace the
fuel/water separator filter.
1.
Replace the filter as shown in
50
78.
Figure 78
Priming the Fuel System (page
Figure
g399473
79.
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