44 SEBU8121
Maintenance Section
Refill Capacities
High sulfur con
tent of the fuel is not normally found
in Europe, North America or Australasia. This can
cause engine wear. When only high sulfur fuels
are available
, it will be necessary that high alkaline
lubricating oil is used in the engine or that the
lubricating oil change interval is reduced.
Distillation
This is an ind
ication of the mixture of different
hydrocarbons in the fuel. A high ratio of light weight
hydrocarbons can affect the characteristics of
combustion.
Lubricity
This is the capability of the fuel to prevent pump wear.
Diesel engin
es have the ability to burn a wide variety
of fuels. These fuels are divided into four general
groups:
•
Group 1 (preferred fuels)
•
Group 2 (per
missible fuels)
•
Group 3 (aviation kerosene fuels)
•
Other fuels
Group 1 (pre
ferred fuels): Specification
“DERV to EN590”
Note: Only use Arctic fuels when the temperature is
below 0 °C (32 °F). Do not use Arctic fuels when the
ambient te
mperature is above 0 °C (32 °F). To ensure
that the time period between cranking the engine and
first fire is kept to a minimum, only use fuel of the
correct vi
scosity and at the correct temperature.
Gas oil to “BS2869 Class A2”
“ASTM D975 - 91 Class 2D” This can only be used if
the fuel has the correct specification of lubricity.
“JIS K2204 (1992) Grades 1,2,3 and Special Grade
3” This can only be used if the fuel has the correct
specifica
tion of lubricity.
Note: If low sulfur or low sulfur aromatic fuels are
used, the
n fuel additives can be used to increase
lubricity.
Group 2 (p
ermissible fuels): Specification
These fuel specifications are considered accept able
for issue
s of warranty. However,these fuels may
reduce the life of the engine, the engine’s maximum
power and the engine’s fuel efficiency.
“ASTM D975 - 91 C
lass 1D”
“JP7, Mil T38219”
“NATO F63”
NOTICE
These fuels should have a wear scar value of 650
micrometers m
aximum *HFRR to ISO 12156 - 1.*
Group 3 (aviation ke rosene fuels): Specification
These fuels ne
ed additives to achieve lubricity of 650
micrometers wear scar and the reliability of the fuel
injection pump will be reduced. The fuel injection
pump is not cov
ered by a warranty, even when the
additives are included.
“JP5 MIL T5624
(Avcat FSII, NATO F44”
“JP8 T83133 (Avtur FSII, NATO F34”
“Jet A”
“Jet A1, NATO
F35, XF63”
Low temperature fuels
Special fuels for use in cold weather may be available
for engine operation at temperatures below 0 °C
(32 °F). Thes
e fuels limit the formation of wax in the
fuel oil at low temperatures. If wax forms in the fuel
oil, this could stop the flow of fuel oil through the filter.
Note: These fuels that lack lubricity may cause the
following problems:
•
Low engine power
•
Difficult s
tarting in hot conditions or in cold
conditions
•
White smoke
•
Deterioration of emissions and misfire at certain
operating c
onditions
Biofuel: Specification
Biofuel: A 5% mix of RME to EN14214 in conventional
fuel is permitted.
NOTICE
Water emulsion fuels: These fuels are not permitted
Refer to the following fuel specifications for
North Amer
ica.
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