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2. Operation and Management
Break-in Period of the Engine
General Information
Doosan engines are subjected to a final approval test
to ensure the provision of high quality engines before
being shipped to ensure the best quality possible.
However, engines are not operated for a long period of
time in this test. Therefore, new engines require a
break-in period of during the initial 50 hours after
delivery. By properly breaking-in an engine, the
highest
levels
of
engine
maintained long-term.
Break-in Period of a New Engine
If the engine's bearings are not properly broken in,
they may be easily damaged and the lifetime of the
engine may be shortened by overloading or high-
speeds. In order to prevent this, please follow the
guidelines below for the initial 50 hours after delivery of
new engine.
1.
Fully warm up the engine until the engine
temperature reaches normal operation condition,
before starting operation of the engine.
2.
Do not overload the engine or operate it at
excessive RPM.
3.
Do not operate the engine with high speed at idle.
4.
Do not rapidly start up or stop the engine.
5.
Operate the engine with less than
engine load.
6.
Inspection, check, and repair of engines should be
managed
by officially-certified
certified
service
corresponding rules.
Check Points
check the following during the break-in period of a new
engine.
1.
Periodically check if the engine oil level is between
the minimum and maximum limit of the oil level
gauge.
CAUTION
If you cannot accurately check the oil level
through the oil level gauge, rotate the oil level
gauge to 180 degree, put it in the guide tube, and
then pull it out again to check.
performance
can
70
% of the
technicians at
centers in
compliance
2.
If the oil indicator lamp on the apparatus is turned
on or blinks, the oil pressure may be insufficient. In
this case, check the oil level and replenish the oil if
required. When replenishing engine oil, do not
exceed the maximum on the oil level gauge. If the
oil level is normal, check other related parts such
as the oil pressure sensor, oil pump, or oil line.
be
The oil pressure may increase with high rpm and
decrease with low rpm. In addition, the pressure
of cold oil may be higher at a specific rpm than of
warm oil. This phenomenon may occur when the
engine is operating successfully.
3.
Check the coolant gauge on the apparatus and if
the coolant circulates properly. If the coolant level
in the supplementary tank is too low, the coolant
gauge may be inaccurate. (may be disturbed).
4.
Exchange engine oil and oil filter after the break-in
period.
If engine oil and oil filter need to be replaced, use
only
the
recommended by Doosan.
Operation after Break-in
Slowly preheat the engine when starting up during cold
weather or in areas with cold climate. Do not rapidly
with
raise the rpm while the engine has not been properly
preheated yet. The engine consumes additional oil
until its piston ring is positioned properly and operates
successfully. Please check the engine oil level
frequently during the initial 50 hour break-in period.
2 - 4
CAUTION
CAUTION
genuine
engine
oil
and
parts
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