74 SEBU8325-01
Maintenance Section
Radiator - Clean
9. Clean the cooli
ng system filler cap. Inspect the
cooling system filler cap's seals. Replace the
cooling syst em filler cap if the seals are damaged.
Install the co
oling system filler cap.
10.Start the engine. Inspect the cooling system for
leaks.
i02335774
Radiator - C
lean
The radiator is not usually supplied by Perkins. The
following text describes a typical cleaning procedure
for the rad
iator. Refer to the OEM information for
further information on cleaning the radiator.
Note: Adju
st the frequency of cleaning according to
the effects of the operating environment.
Inspect t
he radiator for these items: Damaged fins,
corrosion, dirt, grease, insects, leaves, oil, and other
debris. Clean the radia tor, if necessary.
Person
al injury can result from air pressure.
Personal injury can result without following prop-
er proc
edure. When using pressure air, wear a pro-
tective fac e shield and protective clothing.
Maxim
um air pressure at the nozzle must be less
than 205 kPa (30 psi) for cleaning purposes.
Press
urized air is the preferred method for removing
loose debris. Direct the air in the opposite direction
to the fan's air flow. Hold the nozzle approximately
6mm(
0.25 inch) away from the radiator fins. Slowly
move the air nozzle in a direction that is parallel with
the radiator tube assembly. This will remove debris
that
is between the tubes.
Pressurized water may also be used for cleaning.
The
maximum water pressure for cleaning purposes
must be less than 275 kPa (40 psi). Use pressurized
water in order to soften mud. Cl ean the core from
bot
hsides.
Use a degreaser and steam for removal of oil and
gr
ease. Clean both sides of the core. Wash the core
with detergent and hot water. Thoroughly rinse the
core with clean w ater.
If the radiator is blocked internally, refer to the OEM
Manual for information regarding flushing the cooling
s
ystem.
After cleaning
the radiator, start the engine. Allow
the engine to operate at low idle speed for three to
fiveminutes.Acceleratetheenginetohighidle.This
will help in th
e removal of debris and the drying of
the core. Slowly reduce the engine speed to low idle
and then stop the engine. Use a light bulb behind
thecoreinor
der to inspect the core for cleanliness.
Repeat the cleaning, if necessary.
Inspect the
fins for damage. Bent fins may be opened
with a “comb”. Inspect these items for good condition:
Welds, mounting brackets, air lines, connections,
clamps, and
seals. Make repairs, if necessary.
i02678846
Severe Service Application -
Check
Severe service is the application of an engine that
exceeds the current published standards for that
engine. Perkins maintains standards for the following
engine parameters:
•
Performance such as power range, speed range,
and fuel consumption
•
Fuel quality
•
Operational Altitude
•
Maintenance intervals
•
Oil selection and maintenance
•
Coolant type and maintenance
•
Environmental qualities
•
Installation
•
The temperature of the fluid in the engine
Refer to the standards for the engine or consult your
Perkins dealer or your Perkins distributor in order to
determine if the engine is operating within the defined
parameters.
Severe service operation can accelerate component
wear. Engines that operate under severe conditions
may need more frequent maintenance intervals in
order to ensure maximum reliability and retention of
full service life.
Due to individual applications, it is not possible
to identify all of the factors which can contribute
to severe service operation. Consult your Perkins
dealer or your Perkins distributor for the unique
maintenance that is necessary for the engine.
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