Severe Service Application - Check - Perkins 400 Series Operation And Maintenance Manual

72
Maintenance Section

Severe Service Application - Check

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. Clean the core from
both sides.
Use a degreaser and steam for removal of oil and
grease. Clean both sides of the core. Wash the core
with detergent and hot water. Thoroughly rinse the
core with clean water.
If the radiator is blocked internally, refer to the OEM
Manual for information regarding flushing the cooling
system.
After cleaning, start the engine and accelerate the
engine to high idle rpm. This will help in the removal
of debris and the drying of the core. Stop the engine.
Use a light bulb behind the core in order 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.
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
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.
The operating environment, incorrect operating
procedures and incorrect maintenance procedures
can be factors which contribute to a severe service
application.
Environmental Factors
Ambient temperatures – The engine may be
exposed to extended operation in extremely
cold environments or hot environments. Valve
components can be damaged by carbon buildup if
the engine is frequently started and stopped in very
cold temperatures. Extremely hot intake air reduces
engine performance.
Quality of the air – The engine may be exposed
i02176881
to extended operation in an environment that is
dirty or dusty, unless the equipment is cleaned
regularly. Mud, dirt and dust can encase components.
Maintenance can be very difficult. The buildup can
contain corrosive chemicals.
Buildup – Compounds, elements, corrosive
chemicals and salt can damage some components.
Altitude – Problems can arise when the engine is
operated at altitudes that are higher than the intended
settings for that application. Necessary adjustments
should be made.
Incorrect Operating Procedures
• Extended operation at low idle
•
Frequent hot shutdowns
•
Operating at excessive loads
• Operating at excessive speeds
•
Operating outside the intended application
Incorrect Maintenance Procedures
•
Extending the maintenance intervals
•
Failure to use recommended fuel, lubricants and
coolant/antifreeze
SEBU7992-01