SEBU8191-01 31
Maintenance Section
Refill Capacities
To achieve the b
est performance from a Perkins
engine, conform to the following guidelines:
•
Select the cor
rect oil, or a commercial oil that meets
the “EMA Recommended Guideline on Diesel
Engine Oil” or the recommended API classification.
•
See the appropriate “Lubricant Viscosities” table in
order to find the correct oil viscosity grade for your
engine.
•
At the specified interval, service the engine. Use
new oil and i
nstall a new oil fi lter.
•
Perform maintenance at the intervals that are
specified i
n the Operation and Maintenance
Manual, “Maintenance Interval Schedule”.
Oil analys
is
Oil samples should be taken on a regular basis for oil
analysis
. Oil analysis will complement the preventive
maintenance program.
The oil a
nalysis is a diagnostic tool that is used to
determine oil performance and component wear
rates. Contamination can be identified and measured
by using
the oil analysis. The oil analysis includes
the following tests:
•
The Wea
r Rate Analysis monitors the wear of the
metals in the engine. The amount of wear metal
and type of wear metal that is in the oil is analyzed.
The inc
rease in the rate of engine wear metal in
the oil is as important as the quantity of engine
wear metal in the oil.
•
Tests are conducted in order to detect
contamination of the oil by water, glycol, or fuel.
•
The Oil Condition Analysis determines the loss
of the lubricating properties of the oil. An infrared
anal
ysis is used to compare the properties of
new oil to the properties of the used oil sample.
This analysis allows technicians to determine
the a
mount of deterioration of the oil during use.
This analysis also allows technicians to verify the
performance of the oil according to the specification
dur
ing the entire oil change interval.
Fue
l S pecificati ons
Fuel Recommendations
To get the correct power and performance from
the engine, use a fuel of the correct quality. The
re
commended fuel specification for Perkins engines
is shown below:
C
lass A1 Fuels
•
Cetane number_
______________________________________
50
•
Viscosity___________ 1.5to5.0cStat40°C(104°F)
•
Carbon residue__________________________________0.20%
Ramsbottom on 10% reidue
•
Sulfur content___________ 0.05% of mass, maximum
•
Distillati
on
___________________56% at 350 °C (662 °F)
•
Lubricity______________________________460 micrometers
maximum wea
r scar on “ISO 12156 - 1”
Class A2 Fuels
•
Cetane number_______________________________________ 45
•
Viscosity
___________ 1.5to5.5cStat40°C(104°F)
•
Carbon residue__________________________________0.20%
Ramsbott
om on 10% reidue
•
Sulfur content___________ 0.05% of mass, maximum
•
Distillation___________________56% at 350 °C (662 °F)
•
Lubrici
ty
______________________________460 micrometers
maximum wear scar on “ISO 12156 - 1”
Cetane n
umber
This indicates the properties of ignition of the fuel.
Fuel wi
th a low cetane number can be the root
cause of problems during cold start. This will affect
combustion.
Viscosity
This i
s the resistance to flow of a fluid. If this
resistance is outside the limits, the engine and the
engine starting performance in particular can be
affe
cted.
Sulfur
High sulfur content of the fuel is not normally found
in Europe, North America or Australasia. This can
cau
se 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
lub
ricating oil change interval is reduced.
Distillation
This is an indication of the mixture of different
hydrocarbons in the fuel. A high ratio of light weight
hy
drocarbons can affect the characteristics of
combustion.
L
ubricity
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