Operation and maintenance manual

SEBU7833-03 43
Maintenance Section
Refill Capacities
“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 kerosene 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). Th es
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 st
arting 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
W ater emulsion fuels: These fuels are not permitted
Refer to the following fuel specifications for
North Amer
ica.
The preferred f
uels provide maximum engine service
life and performance. The preferred fuels are distillate
fuels. These fuels are commonly called diesel fuel
or gas oil.
The permissible fuels are crude oils or blended fuels.
Use of these f
uels can result in higher maintenance
costs and in reduced engine service life.
Diesel fuels
that meet the specifications in Table
14 will help to provide maximum engine service life
and performance. In North America, diesel fuel that
is identified
as No. 2-D in “ASTM D975” generally
meets the specifications. Table 14 is for diesel fuels
that are distilled from crude oil. Diesel fuels from
other sourc
es could exhibit detrimental properties
that are not defined or controlled by this specification.
Table 14
Perkins Specifications for Distillate Diesel Fuel
Specifications
Requirements
ASTM Test
Aromatics
35% maximum “D1319”
Ash
0.02% maximum
(weight)
“D482”
Carbon R esidue
on 10% Bottoms
0.35% maximum
(weight)
“D524”
Cetane Number
40 minimum (DI
engines)
“D613”
Cloud Point
The cloud
point must not
exceed the
lowest expected
ambient
temperature.
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