Perkins 1206A-E70TTA Operation And Maintenance Manual page 64

64
Maintenance Section
General Fuel Information
If biodiesel or biodiesel blends of fuel are to be used,
Perkins require the use of Perkins fuel cleaner. For
more information on the use of biodiesel and
biodiesel blends refer to "Biodiesel Fuel".
Perkins fuel cleaner will remove deposits that can
form in the fuel system with the use of biodiesel and
biodiesel blends. These deposits can create a loss of
power and engine performance.
Once the fuel cleaner has been added to the fuel, the
deposits within the fuel system are removed after 30
hours of engine operation. For maximum results,
continue to use the fuel cleaner for up to 80 hours.
Perkins fuel cleaner can be used on an on-going
basis with no adverse impact on engine or fuel
system durability.
Detailed instructions on the rate of which the fuel
cleaner must be use are on the container.
Perkins Diesel Fuel Conditioner
Perkins Diesel Fuel Conditioner (part number
U5MK8276) can be used in these engine models.
The diesel fuel conditioner is a proprietary metal and
ash free formulation that has been extensively tested
for use with distillate diesel fuels for use in Perkins
diesel engines. The diesel fuel conditioner helps
address many of the challenges that various fuels
worldwide present with regard to fuel life/stability,
engine startability, injector deposits, fuel system life,
and long-term engine performance. Contact a
Perkins distributor for more information.
Note: Diesel fuel additives/conditioners may not
improve markedly poor diesel fuel properties enough
to make poor diesel acceptable for use.
Diesel fuel conditioner is a proven high performance,
multipurpose diesel fuel conditioner that is designed
to improve:
• Fuel economy (through fuel system clean-up)
• Lubricity
• Oxidation stability
• Detergency/dispersancy
• Moisture dispersancy
• Corrosion protection
• Cetane (typically 2-3 cetane numbers)
The diesel fuel conditioner also reduces the
formation of gums, resins, and sludge, and disperses
insoluble gums.
For maximum overall benefits, ask your fuel supplier
to add the fuel conditioner at the recommended treat
rate before fuel delivery. Or you may add the fuel
conditioner at the recommended treat rate during the
early weeks of fuel storage.
Contamination Control
Recommendations for Fuels
Fuels of "ISO 18/16/13" cleanliness level or cleaner
as dispensed into the engine or application fuel tank
should be used. This will reduce risk of power loss,
fuel system failures, and related down time of
engines. This cleanliness level is important for new
fuel system designs such as common rail injection
systems and unit injectors. These fuels systems
utilize higher fuel injection pressures and have tight
clearances between moving parts to meet required
stringent emissions regulations. Peak injection
pressures in current fuel injection systems may
exceed 2000 bar (29000 psi). Clearances in these
systems are less than 5 μm. As a result, particle
contaminants as small as 4 μm can cause scoring
and scratching of internal pump and injector surfaces
and of injector nozzles.
Water in the fuel causes cavitation, corrosion of fuel
system parts, and provides an environment where
microbial growth in the fuel can flourish. Other
sources of fuel contamination are soaps, gels, or
other compounds that may result from undesirable
chemical interactions in the fuels, particularly in
ULSD. Gels and other compounds can also form in
biodiesel fuel at low temperatures or if biodiesel is
stored for extended periods. The best indication of
microbial contamination, fuel additives, or cold
temperature gel is rapid filter plugging of bulk fuel
filters or application fuel filters.
To reduce downtime due to contamination, follow
these fuel maintenance guidelines.
• Use high-quality fuels per recommended and
required specifications
• Fill fuel tanks with fuels of "ISO 18/16/13"
cleanliness level or cleaner, in particular for
engines with common rail and unit injection
systems. When you refuel the tank, filter the fuel
through a 4 µm absolute filter (Beta 4 = 75 up to
200) in order to reach the recommended
cleanliness level. This filtration should be located
at the device that dispenses the fuel to the fuel
tank. In addition, filtration at the dispensing point
should remove water to ensure that fuel is
dispensed at 500 ppm water or less.
• Perkins recommends the use of bulk fuel filter /
coalescer units which clean the fuel of both
particulate contamination and water in a single
pass.
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