Doosan DE08TS User Manual

DE08TS Diesel Engines Maintenance of Major Components
Precautions for operation
1. Precautions for operation of engine
The following precautions should be observed when starting, operating, or stopping the engine:
91
Operations Precautions Reasons
When starting
the engine
1) Check oil level
2) Crank the engine with starter to check the
increase in oil pressure(until the needle of
pressure gauge starts to move or pressure
indicator lamp is actuated) before starting
the engine.
3) When having replaced oil, oil filter element,
or lubricating parts, or when having
stopped the engine for extended period of
time, or in a cold place, loosen the oil pipe
connections and operate the starter motor
until oil is discharged. After completing the
operation, be sure to retighten the oil pipe
connections portion before starting the
engine.
2) Abrupt starting of the engine causes the
engine to rotate with oil not being distrib-
uted not only to each part but also to the
turbocharger, resulting in abnormal wear
or seizure on the bearing due to insuffi-
cient supply of oil.
3) In the case of the engine stopped for
extended time or in a cold place, oil fluidi-
ty within the pipes can be deteriorated
Immediately
after starting
1) Run the engine at idle for 5 minutes after
starting off.
2) Check each part for leakage of oil, gas,
and air, and take proper measure.
1) Applying load abruptly If load is abruptly
applied with the engine and turbocharger
rotating unsmoothly, such parts that a suf-
ficient amount of oil has not reached can
be seized up.
2) Leakage of oil, gas, and air (especially, oil
leak) causes drop in oil pressure and loss
of oil results in seizure of the bearing.
During operation
Check the followings:
1) Oil pressure At idle: 0.8 kg/cm
2
or more At
full load: 3.0 ~ 4.8 kg/cm
2
2) If unusual sound or vibration is heard or
felt, reduce engine revolutions slowly and
locate the cause.
1) Excessively low oil pressure causes
unusual wear or seizure of the bearing.
Too high pressure causes oil leakage.
2) The engine is operated continuously with
unusual sound or vibration not corrected, it
can be damaged beyond repair.
When stopping
the engine
1) Run the engine at idle for 5 min-
utes before stopping.
1) If the engine is put to a stop after
being operated at high load, heat
from the red-hot turbine blades is
transmitted to the bearing portion
and burns oil to cause seizure of
the bearing metal and rotating
shaft.

Doosan DE08TS Specifications

General

Brand	Doosan
Model	DE08TS
Category	Engine
Language	English