Perkins 904D-E28T Operation And Maintenance Manual page 30

30
Product Information Section
Product Description
• Torque rise shaping
• Injection timing control
• System diagnostics
• NOx reduction system control
The ECM provides an electronic governor that
controls the injector output to maintain the desired
engine speed.
For more information on electronic engine features,
refer to the Operation and Maintenance Manual,
"Features and Controls" topic (Operation Section).
Engine Diagnostics
The engine has built-in diagnostics to ensure that the
engine systems are functioning correctly. The
operator will be alerted to the condition by a "Stop or
Warning" lamp. Under certain conditions, the engine
horsepower and the vehicle speed may be limited.
The electronic service tool may be used to display
the diagnostic codes.
There are three types of diagnostic codes: active,
logged, and event.
Most of the diagnostic codes are logged and stored in
the ECM. For additional information, refer to the
Operation and Maintenance Manual, "Engine
Diagnostics" topic (Operation Section).
Engine Cooling and Lubrication
The cooling system and lubrication system consists
of the following components:
• Belt driven water pump
• Water temperature regulator which regulates the
engine coolant temperature
• Gear-driven gerotor type oil pump
• Oil cooler
The engine lubricating oil is supplied by a gerotor
type oil pump. The engine lubricating oil is cooled
and the engine lubricating oil is filtered. The bypass
valve can provide unrestricted flow of lubrication oil to
the engine if the oil filter element should become
plugged.
Engine efficiency, efficiency of emission controls, and
engine performance depend on adherence to proper
operation and maintenance recommendations.
Engine performance and efficiency also depend on
the use of recommended fuels, lubrication oils, and
coolants. Refer to this Operation and Maintenance
Manual, "Maintenance Interval Schedule" for more
information on maintenance items.
Engine Service Life
Engine efficiency and maximum utilization of engine
performance depend on the adherence to proper
operation and maintenance recommendations. In
addition, use recommended fuels, coolants, and
lubricants. Use the Operation and Maintenance
Manual as a guide for required engine maintenance.
Expected engine life is generally predicted by the
average power that is demanded. The average
power that is demanded is based on fuel
consumption of the engine over time. Reduced hours
of operation at full throttle and/or operating at
reduced throttle settings result in a lower average
power demand. Reduced hours of operation will
increase the length of operating time before an
engine overhaul is required. For more information,
refer to the Operation and Maintenance Manual,
"Overhaul Considerations" topic (Maintenance
Section).
Aftermarket Products and Perkins
Engines
Perkins does not warrant the quality or performance
of non-Perkins fluids and filters.
When auxiliary devices, accessories, or
consumables (filters, additives, catalysts) which are
made by other manufacturers are used on Perkins
products, the Perkins warranty is not affected simply
because of such use.
However, failures that result from the installation
or use of other manufacturers devices,
accessories, or consumables are NOT Perkins
defects. Therefore, the defects are NOT covered
under the Perkins warranty.
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