Perkins 2506 Operation And Maintenance Manual page 47

SEBU8313-02
NOTICE
These fuels should have a wear scar value of 650 mi-
crometers maximum
*HFRR to ISO 12156 - 1.
Group 3 (aviation kerosene fuels): Specification
These fuels need additives to achieve lubricity of 650
micrometers wear scar and the reliability of the fuel
pump and fuel injectors will be reduced. The fuel
injection pump is not covered 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). These 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 starting in hot conditions or in cold
conditions
• White smoke
• Deterioration of emissions and misfire at certain
operating conditions
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 America.
The preferred fuels 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 fuels can result in higher maintenance
costs and in reduced engine service life.
Diesel fuels that meet the specifications in Table 8
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 8 is for diesel fuels
that are distilled from crude oil. Diesel fuels from
other sources could exhibit detrimental properties
that are not defined or controlled by this specification.
Table 8
Perkins Specifications for Distillate Diesel Fuel
Specifications Requirements
Aromatics 35% maximum
0.02% maximum
Ash
(weight)
Carbon Residue on 0.35% maximum
10% Bottoms (weight)
40 minimum (DI
Cetane Number
engines)
The cloud point must
not exceed the low-
Cloud Point
est expected ambi-
ent temperature.
Copper Strip No. 3 maximum
Corrosion
10% at 282 °C
(540 °F)
maximum
Distillation
90% at 360 °C
(680 °F)
maximum
Flash Point legal limit
30 minimum
API Gravity
45 maximum
6 °C (10 °F) mini-
mum below ambient
Pour Point
temperature
0.2% maximum
Sulfur (1)
2.0 cSt minimum and
Kinematic Viscosity
4.5 cSt maximum at
(2)
40 °C (104 °F)
Water and Sediment 0.1% maximum
Water 0.1% maximum
0.05% maximum
Sediment
(weight)
47
Maintenance Section
Fluid Recommendations
ASTM Test
"D1319"
"D482"
"D524"
"D613"
-
"D130"
"D86"
"D93"
"D287"
"D97"
"D3605"
or
"D1552"
"D445"
"D1796"
"D1744"
"D473"
(continued)