Engine Inspections And Maintenance; Checking Engine Parts After Prolonged Operation; Turbocharger Inspections And Maintenance - Doosan DX22 Operation & Maintenance Manual

2. Operation and Maintenance
Note) If the heater switch on the generator control panel is
left on while the engine is turned off, the current
consumption resulting from unnecessary operation of
the fuel heater mounted on the primary fuel filter may
cause the battery to discharge. Hence, if the generator
control panel is not connected to a sufficient constant
external charging power source, it is recommended to
turn on the heater switch of the generator set five
minutes before starting the engine.

Engine Inspections and Maintenance

Checking Engine Parts after Prolonged
Operation
The function of engine parts may be degraded by wear,
corrosion, and thermal deterioration in engine parts and
assemblies. In order to maintain optimal engine
performance, check the engine after prolonged operation to
enhance engine durability.
Even if the engine is operated normally, faults may occur in
certain unpredictable and vulnerable parts as the engine is
used over time. In such cases, it is difficult to maintain engine
performance simply by repairing certain parts. In order to
locate the causes of problems more accurately and maintain
optimal engine performance, it is best to replace or repair all
related parts as a whole.
In order to prevent engine malfunction in advance, performing
replacements and inspections periodically enables the
engine to be used safely for a longer period of time.
We recommend performing engine adjustments and preventive
inspections in the spring after winter or cold temperatures have
passed. In doing so, the engine can be used economically and
without faults for extended periods of time.
As the following parts affect the engine output and
performance, these parts should be checked and inspected
periodically.
1. Components that can affect intake and exhaust
• Air filter
• Intercooler
• Turbocharger, muffler
• Misc.
2. Components that can affect lubrication and cooling
performance
• Air filter
• Oil Filter
• Antifreeze
• Misc.
3. Components that can affect fuel injection
• Fuel Tank
• Primary fuel filter and cartridge
• Secondary fuel filter and element
• Common rail, high-pressure pump wiring fasteners

Turbocharger Inspections and Maintenance

As turbocharger performance has a significant impact on
engine performance, it is important to perform periodic
inspections and maintenance, as well as to comply with the
specified instructions for handling the turbocharger.
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