Fuel System
Maintenance
Note: Refer to Adding Fuel ( page 26 ) for proper the
fuel recommendations.
DANGER
Under certain conditions, diesel fuel and fuel
vapors are highly ammable and explosive. A
re or explosion from fuel can burn you and
others and can cause property damage.
Never smoke when handling fuel, and stay
away from an open ame or where a spark
may ignite fuel fumes.
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: W ater 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 lter replacement, fuel system maintenance,
and fuel storage, the engine fuel system could fail
prematurely . Perform all fuel system maintenance
at the specied 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. T ank sludge developed by mold,
bacteria, or fungus restricts ow and clogs the lter
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 nd 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.
Bleeding the Fuel System
1. Park the machine on a level surface.
2. Engage the parking brake.
3. W ait for the engine to cool.
4. Ensure that the fuel tank is at least half full.
5. Unlatch the radiator; refer to Accessing the
Engine from the Left Side ( page 48 ) .
6. Place a drain pan under the air-bleed screws.
7. Conrm and ensure the fuel lter lever is in the
O N position ( Figure 58 ).
8. Open the rst air-bleed screw on the
fuel-injection pump ( Figure 58 ).
9. Allow the air to escape and wait for fuel to
escape.
10. After fuel starts to escape, tighten the rst
air-bleed screw ( Figure 58 ).
1 1. Open the second air-bleed screw on the
fuel-injection pump ( Figure 58 ).
12. Allow the air to escape and wait for fuel to
escape.
13. After fuel starts to escape, tighten the second
air-bleed screw ( Figure 58 ).
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